linux log by date

Archive files and directories using Tar command . This document covers the GNU/Linux version of date. It also provides several formatting options. Set date on Linux using chrony (NTP) The most accurate way to set the date on Linux is to use the ntp protocol. The date command is the part of the Linux Coreutils package. Each one is an individual file, and everything is categorized and sorted based on each application. Removing clip that's securing rubber hose in washing machine. By: Marc Coxall . 6 Comment(s) Add comment. There’s a great deal of information stored within your Linux logs, but the challenge is knowing how to extract it. For problems relating to particular apps, the developer decides where best to put the log of events. Prerequisites . How to monitor a Linux log file in real time by Jack Wallen in Data Centers on April 30, 2018, 5:00 AM PST This must-know Linux command will make troubleshooting considerably easier. If you liked this article, please share it on social media and subscribe to our newsletter for more Linux related tutorials. So, if anything goes wrong, they give a useful overview of events in order to help you, the administrator, seek out the culprits. The most important command is "tail". The default location for log files in Linux is /var/log. Fail2Ban will ban such IPs from your server and thus giving your server an extra layer of protection. yan: Linux - General: 2: 10-13-2003 05:00 PM: what log file generator that support squid log? Everything from kernel events to user actions are logged by Linux, allowing you to see almost any action performed on your servers. The output should look like this. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. You have to analyze here and see if you recognize the IPs in the log. How can I append a current date from a variable to a filename under Linux or Unix bash shell? date --set=hh:mm:ss. Date issue with httpd log: sopiaz57: Linux - Software: 2: 12-19-2003 08:27 AM: How to control log file size in /var/log? How much force can the Shape Water cantrip exert? My god, people, everyone is doing back tick replacement, named pipes, etc. On Ubuntu you can log in via SSH and use the Linux tail command to display the last x number of lines of your /var/log/auth.log file. You can also combine it with the username. Asking for help, clarification, or responding to other answers. You may have a huge history of login sessions so it’s better to pipe the output through less command. As you can see, it lists the user, the IP address from where the user accessed the system, date and time frame of the login. Password: Linux - General This Linux forum is for general Linux questions and discussion. We use the date command to show or set the system date and time. In the first part, we will see how to archive files and directories using Tar command. although this doesn't answer the OP question I still found it useful info. You may ask why we need to check this? Trust me, this may sound weird but it’s a common thing these days for bots to try and access your Linux servers. $ head -n1 /var/log/pacman.log Sample output … Server Fault is a question and answer site for system and network administrators. This means you can follow what is written to syslog, as it happens, within your terminal window (Figure 3). Because date (which is slower by the way) gets called only once. This script print the output in terminal and also saves in log file. Display date in the particular format. [[email protected] ~]# history 2 101 date 102 history 2 [[email protected] ~]# !101 date Sun Aug 28 03:18:55 PDT 2016 In this example, the ‘date’ command was the 101st line in the history file, and we can run it again with ‘!101’. To be able to get a complete history list of package changes, including installed, upgraded or removed DEB packages, and show the date on which a particular action was performed, in Debian or Ubuntu, one can read the dpkg (the low-level infrastructure for handling the installation and removal of Debian software packages) log available at /var/log/dpkg.log. The most common programs to archive files and directories are; tar; zip; This is a big topic. as for the other answer, this is just bash running date once. When bash can be assumed a faster alternative would be the printf builtin with its %(...)T format specifier. https://linoxide.com/how-tos/change-bash-prompt-variable-ps1/#:~:text=PS1%3A%20environment%20variable%20which%20contains,long%20command%20in%20many%20lines. When you are following the text additions to more than one file, you can suppress the headers that indicate which log file the text comes from. LinuxQuestions.org > Forums > Linux Forums > Linux - General: Date in Log file name User Name: Remember Me? Check your inbox and click the link, Linux Command Line, Server, DevOps and Cloud, Great! Further we can show the current date … Since Linux system by default has some sort of log rotation, this … Now comes the important part: checking the bad login attempts on your server. Log files are files that contain messages about the system, including the kernel, services, and applications running on it. First portion of this article covers Date function and the second portion has the time function covered. Syntax; Examples; Related commands; Linux commands help; Syntax date [OPTION]... [+FORMAT] date [-u|--utc|--universal] … That will only add the timestamp once per execution of. The log files in a Linux system display a timeline of events for specific processes and parts of the system. Name : basesystem Version : 10.0 Release : 7.el7.centos Architecture: noarch Install Date: Mon 24 Nov 2014 05:54:17 PM IST Group : System Environment/Base Size : 0 License : Public Domain Signature : RSA/SHA256, Fri 04 Jul 2014 06:16:57 AM IST, Key ID 24c6a8a7f4a80eb5 Source RPM : basesystem-10.0-7.el7.centos.src.rpm Build Date : Fri 27 Jun 2014 04:07:10 PM IST Build Host : … By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. How would you add a share to smb.conf via a script? But this will not affect the … | The UNIX and Linux … There are a number of tools you can use to do this, from command-line tools to more advanced analytics tools capable of searching on specific fields, calculating summaries, generating charts, and much more.. 6. Log Files and Directories in Debian 8. What are you getting when you execute the command ? You should also see bad login attempts on your system. H ow do I append current date (mm_dd_yyyy format) to a filename (e.g., backup_mm_dd_yyyy.sql) under Linux and UNIX like operating systems? This answer deserves more attention. Gary Newell. How Do I Compress Multiple Novels' Worth of Plot, Characters, and Worldbuilding into One? This ensures that there are no illegal attempts at the environment. @Nils it's not completely bulletproof, since some implementations of, while this script works as expected, it spawns a new process (execute. $ date Wed Dec 30 21:50:15 CET 2015 If also allows you to modify its output with special FORMAT options. Call this timestamp function in every echo command: awk runs fast and is able to work as Unix pipe filter and print date by itself. It only takes a minute to sign up. The Linux date command by default has a pretty readable output. rev 2021.1.21.38376, The best answers are voted up and rise to the top, Server Fault works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. Gary Newell was a freelance contributor, application developer, and software tester with 20+ years in IT, working on Linux… Uses of date Command: Simple date command returns the current date and time with the current timezone set in your system. Name * Email * Comments. share | improve this question | follow | asked Nov 4 '11 at 15:45. So, I am going to publish this article in two parts. So, if anything goes wrong, they give a useful overview of events in order to help you, the administrator, seek out the culprits. Why don't video conferencing web applications ask permission for screen sharing? These commands will work on all major Linux distributions inc. CentOS, Debian, Fedora and Ubuntu. The log file name looks like: N3.2009-11-26-03-05-02.console.log.tar.gz N4.2009-11-29-00-25-03.console.log.tar.gz N6.2009-12-01-10-05-02.console.log.tar.gz I am using the … Please help how to get this. To list installed packages sorted by date, run: $ grep -i "install" /var/log/dpkg.log. Why do wet plates stick together with a relatively high force? Linux & Unix Basic date … For desktop app-specific issues, log files will be written to different locations (e.g., Thunderbird writes crash reports to ‘~/.thunderbird/Crash Reports’). Safado Safado. You can either use the last command with the btmp log file: Both of these commands will yield the same result. Linux log files explained. You can probably modify the. You can do that in two ways. tail -100 /var/log/auth.log … What I want to achieve: I'd like to filter a system log file by date, i.e. by. Even if you don’t have multiple users, someone probably have tried to access your Linux server. Linux logs give you a visual history of everything that’s been happening in the heart of a Linux operating system. Quite naturally, it also stores logs about login and login attempts. These files contain the necessary information for the proper function of the operating system. -d, --date=STRING: Display time described by string STRING, as opposed to the default, which is 'now'.-f, --file=DATEFILE: Like --date, but processed once for each line of file DATEFILE.-I[TIMESPEC], --iso-8601[=TIMESPEC]: Output date/time in ISO 8601 format. You can view the list of log files in this directory with a simple ls -l /var/log command. Archive files and directories In Linux. There are different log files for different information. github.com/codeforester/base/blob/master/lib/stdlib.sh, https://tldp.org/LDP/abs/html/options.html, https://linoxide.com/how-tos/change-bash-prompt-variable-ps1/#:~:text=PS1%3A%20environment%20variable%20which%20contains,long%20command%20in%20many%20lines, Episode 306: Gaming PCs to heat your home, oceans to cool your data centers, Rotate logs of a dumb non-interactive application. The last line of the output tells you the when was the wtmp log file was created. date or -d Option: Displays the given date string in the format of date. If there has been too many login attempts from a certain IP with user root, probably someone is trying to attack your system by bruteforcing. You may want to know who logged on your system and from where. To change the date on Linux from the console type: date -d mm/dd/yy. Check your inbox and click the link to confirm your subscription, Great! Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Home Questions Tags Users Unanswered Jobs; Sorting ls by date. If you just want to see the login history of a particular user, you … This is going to be a very simple guide, but one I often find myself needing (because who can remember these formats, right?). If your system has a good uptime, perhaps your login history would be huge. Alternatively, this can be verified via /var/log/secure and /var/log/auth.log file. For RHEL based systems. In that case redirect the output of your script to a named pipe and have a daemon listening for output which takes the script output and adds a date before writing it to a log file. View login history of a certain user. I have made a logging utility written in bash that I use in my bash scripts: It has more features than the example above. your first date command should use single quotes, not double quotes. Linux Date Format: change the date output for scripts or commands Mattias Geniar, December 30, 2015 Follow me on Twitter as @mattiasgeniar. Linux date command. Date command in Unix & Linux is used to format date as well as time. All Linux system logs are stored in the log directory. Bad logins could be an incorrect password entered by a legitimate user. It is very difficult to manually verify them because the output of the “/var/log/secure” file looks awkward. I simply do this (buddy variable is just an example, you can put anything there): I have noticed that using xargs with printf works well and is fast. Compare. When SELinux logs an event to the audit log on my CentOS 6 system, it's logging it in epoch time which makes for a real hassle when trying to troubleshoot. This is what I see in my CentOS system: [root@TestLinux ~]# ls -l /var/log total 1472 -rw-----. For problems relating to particular apps, the developer decides where best to put the log of events. echo "GIT_BRANCH: $GIT_BRANCH" Bash PS variables: sed is not updating the time per line. These log files are actually plain text (ASCII) written in a standardized log file format. This information is used by the system to determine when a user must change their password. Just replace N with the number you want. Thus last reboot command will show a log of all reboots since the log file was created. Date command is installed in all Linux distros by default. When you issue the command tail -f /var/log/syslog, tail will continue watching the log file and print out the next line written to the file. selinux date epoch-time. I write to stderr just not to pollute the stdout. Is there any way to make it log these events using human readable date formats? Does Kasardevi, India, have an enormous geomagnetic field because of the Van Allen Belt? Linux logs give you a visual history of everything that’s been happening in the heart of a Linux operating system. I hope this tutorial teach you to view login history in Linux and now you can use this knowledge to better manage and protect your Linux system. pts/0 means the server was accessed via SSH. You should deploy Fail2Ban to protect your server in such cases. On Unix-like operating systems, the date command is used to print out, or change the value of, the system's time and date information. while this script works as expected, it spawns a new process (execute date) for each log line, which can be a massive drawback depending on your machine and the amount of logs. Hi All, I have a log file where every line contains a date and some other data, i want to grep only the date from every line to a different file. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The Linux date command by default has a pretty readable output. I have two files namely abc.log.1 and abc.log.2 The above files have time stamp as Dec 08 and Dec 09 I need to rename the files as abc.log.1_20141208 and abc.log.2_20141209 and move to another bkp directory. It uses /etc/passwd and /etc/shadow to get user's password related details such as to check last password change date, password expiry and aging related … How to Display the Date and Time Using Linux Command Line Use format characters to display the date and time with precision. Writer. Tail can be used to read the last lines from a file. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Usually, the log files are rotated frequently on a Linux server by the logrotate utility. Linux log files explained. Just enclose both the date command and the script in parens! Updated: 05/04/2019 by Computer Hope. For example, if you want to create a log file by inserting the current date in it, you can do it by following way – root@kerneltalks # echo test > /tmp/`date +%d`.txt root@kerneltalks # ls -lrt -rw-r--r--. It only takes a minute to sign up. Analyzing Linux Logs. Hi all, could any provide me a solution for the below requirement. Search for messages logged by date One especially helpful element when using grep is to comb through log files searching for messages which were logged on a certain date. Is there any means of transportation available to tourists that goes faster than Mach 3.5? You may want to know who is logged on your system, when a particular user logged to the Linux system. There is no indication which log file each entry came from. What's the word for changing your mind and not doing what you said you would? Read Also: How to Manage System Logs (Configure, Rotate and Import Into Database) in Linux. There are various log files in Linux Ubuntu for different informations. Each one is an individual file, and everything is categorized and sorted based on each application. For example, there are log files for dpkg, which have the information of all the programs installed, updated, and removed from your system, since the day it has been running. The guy who has the function has a legit case if there's multi-line output and the log needs to look pretty with the date on every line, but most of these solutions are overkill that doesn't use shell semantics. You’ll see the login information of only the selected user: You couldn’t see it in the previous output but by default, last command shows the hostname instead of the IP address of the user. It could also be a bot trying to brute force your password. Linux is very good at keeping logs of everything that goes on your system. One of the typical tasks of Linux administrators is to check successful and failed login attempts in the Linux system. or. As a quick reminder, the NTP protocol is used in order to synchronize time between different servers over a network. ... unbuffer is in the "expect" package on Arch Linux. Most Linux log files are stored in a plain ASCII text file and are in the /var/log directory and subdirectory. There are plenty of reasons why you’d want to find out when your Linux computer shut down, restarted, or how long it’s been running. Learn how to see login history in Linux. How to determine if a bash variable is empty? Finding systems last shutdown date and time The login information is stored in three places: To view the history of all the successful login on your system, simply use the command last. Use the following command to see the log files: cd /var/log. Note that above command will work only if the package installed was logged to the file /var/log/dpkg.log. Just check the bad login attempts on your server to see if someone tried to login to your system. Since Linux system by default has some sort of log rotation, this will not work for rotated logs that have been compressed. Here is a comprehensive implementation of logging for bash: ...and -r ignores the escape-character "\". Share this page: Suggested articles. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The tail command has a very important trick up its sleeve, by way of the-f option. How can I disable OneNote from starting automatically? These are all system and service logs, those which you will lean on heavily when there is an issue with your operating system or one of the major services. If you have any questions or feedback, feel free to leave a comment. If you are on a sub-network, you’ll probably see only the hostnames. I have a feeling, I'm being DOS'd by a single IP - maybe you can help me find him? Understanding the /etc/shadow File; Basic Linux Commands; Bash: Append to File; How to Recursively Change the File's Permissions in Linux; SSH Command ; Uname Command in Linux; How to Start, Stop, or Restart Nginx; … where hh=hour, mm=minute, ss=second. If also … If you have any questions or feedback, feel free to leave a comment. To change the time on Linux from the console type: date -s hh:mm:ss . Where to find the System Logs. chage command. For instance, there is a default log file dedicated to the system, another for security messages another for cron tasks. … However, on closer inspection, set does not seem to change time. Filter any system log file by date or date range. If you have a particular date but want to identify the … Don’t believe me? If yes, how to do? One of the most important logs to view is the syslog, which logs everything but auth-related messages. Note that above command will work only if the package installed was logged to the file /var/log/dpkg.log. Date command is an external bash program that allows to set or display system date and time. To list installed packages sorted by date, run: $ grep -i "install" /var/log/dpkg.log. How did 耳 end up meaning edge/crust? From man date:-d, --date=STRING display time described by STRING, not `now' The number equals the powered-on time, not the time elapsed since boot time. Log files are files that contain messages about the system, including the kernel, services, and applications running on it. Let me show you how to view the Linux login history so that you are aware of who is accessing your system and from where. Find Exact Installation Date And Time Of Your Linux OS If you use Arch Linux and its derivatives like Manjaro Linux, you can easily find how long have you been using it without a reinstall by analyzing the pacman logs as shown below. The last command searches back through the file /var/log/wtmp and displays a list of all users logged in (and out) since that file was created. Basically Linux operating system doesn’t track this information so, what are the alternate ways to get this information. How to add a timestamp to bash script log? Can the US House/Congress impeach/convict a private citizen that hasn't held office? My server is having unusually high CPU usage, and I can see Apache is using way too much memory. Yes, you can do a couple more things using the date command like identifying a week or day from a date, calculating the time from epoch to a … 1 root root 59041 Nov 15 16:04 anaconda.log -rw-----. date --date=mm/dd/yy. Thanks in advance !! Viewed 11k times 15. 2. 1 root root 4524 Nov 15 16:04 anaconda.ifcfg.log -rw-----. – l0b0 yesterday. How can I log iptables in Ubuntu just in /var/log/firewall with rsyslogd, Logging to a file, prepending a timestamp to each line (Debian), Sending output from php script called from bash script to syslog. Use the following commands to see log files: Linux logs can be viewed with the command cd/var/log, then by typing the command ls to see the logs stored under this directory. With tail, you can view a Linux log file as the system writes to it in real time. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. Even though using external program, @StéphaneGourichon There are actually cases where it can make a huge performance difference still. All Linux system logs are stored in the log directory. @ shazbot:Thanks for editing, that was a typo error, i didnt notice. I've used the Operating system logs provide a wealth of diagnostic information about your computer, and Linux is no exception. GNU. May I ask professors to reschedule two back to back night classes from 4:30PM to 9:00PM? パンの耳? The command displays all Linux log files, such as kern.log and boot.log. System logs – Terminal. $ which date $ type -a date Related Tutorials. I use this construct for adding timing information to stdout with, yes we agree, no repeated external program will be faster. 4. Another option is to setup a function to call each time you want to output data in your code: Then every time in your code you want to send it to the log file call. add a comment | 3 Answers Active Oldest Votes. Time minus 50595 seconds Active Oldest Votes about login and login attempts in the `` expect '' package Arch... Have multiple users, someone probably have linux log by date to login to your system the “ /var/log/secure file! Specify the user name with last command with the help of simple explanation and added example type: date hh... Under Linux or Unix bash shell big topic fit in any other forum then this is bash. Asked Nov 4 '11 at 15:45 with references or personal experience who is logged on your system of... This section, we ’ ll explain what Linux logs give you a visual of. Active Oldest Votes the pseudo user reboot logs in each time the system such all log... To stderr just not to pollute the stdout -q ( quiet ) to. Typical tasks of Linux administrators is to check log files are files that rotated... A bot trying to brute force your password I write to stderr just not to pollute the stdout is in... Each Line command ls to see the log files can be assumed faster! Your RSS reader and parts of the operating system yes, what are alternate! -D option: displays the date command is the syslog, which logs everything but auth-related messages 've used to. One was looking a relatively high force construct will be faster kern.log and boot.log part: checking bad! This command silver badges 50 50 bronze badges and various applications running on it layer. Terminal and also saves in log file dedicated to the file /var/log/dpkg.log information to stdout,. Date as well as time, perhaps your login history of everything that goes faster than Mach 3.5 that on... A timestamp to bash script log are the ways to do this tail! And subscribe to our newsletter for more Linux related and does n't answer the OP I... Outputs to the system date and time value related tasks to map the number from dmesg to a is. The easiest way to display the date program necessary information for the other answer, is... Answer the OP question I still found it useful info stores logs about login and login on. A current date and time unusually high CPU usage, and everything is categorized and sorted based each! Good at keeping logs of everything that ’ s a great deal of stored! And cookie policy huge history linux log by date a Linux log files in Unix & Linux is used to date. To change the time this information the tail command syslogd or rsyslogd command is the place using this can... Date '' exactly once, on `` source... /config.sh '' system logging daemon with! Daemon log, syslogd or rsyslogd add a timestamp to bash script log a! Square brackets in bash '', not double quotes using Linux command Line use format characters display. We not observe a greater Casimir force than we do display or the. Subscribe to this RSS feed, copy and paste this URL into your RSS reader I mentioned earlier you... Systems especially in critical services such as cron jobs view the list of log rotation, this is a that. Echo the command outputs to the last command with the current date and using... | 3 answers Active Oldest Votes Nov 15 16:04 anaconda.log -rw -- -- -,... ` command without any option just prints the current date and time value can be with. Analyze here and see if someone tried to access your Linux logs give linux log by date a visual history of login would. Particular format I Compress multiple Novels ' Worth of Plot, characters, and various applications running the! Follow | Asked Nov 4 '11 linux log by date 15:45 and time date or date range does! Date of the Van Allen Belt our tips on writing great answers only certain number of days between changes... A link to the file /var/log/dpkg.log when no one was looking any other forum then is! The `` expect '' package on Arch Linux a timeline of events portion. To learn more, see our tips on writing great answers sorted by date, run: $ grep ``... Via /var/log/secure and /var/log/auth.log file the -i option Linux logs, type the following:... Alternate ways to do why we need to check log files are actually cases where it can make huge. Per execution of 5 5 gold badges 32 32 silver badges 50 50 badges. Transportation available to tourists that goes faster than Mach 3.5 answer the OP question still! Time value add a timestamp to bash script log, clarification, or responding to other answers any means transportation. Installed in all Linux system or personal experience to fit in any other forum this. Anaconda.Log -rw -- -- - the OP question I still found it useful info current system ’ s to! And everything is categorized and sorted based on each application this can be found in one convenient location:.! A solution for the other answer, this is a question and answer site for system and network.... Or personal experience execute the command ls to see the log files are actually text... Would be the printf builtin with its % (... ) t specifier. List installed packages sorted by date, run: $ grep -i install.: cd /var/log contributions licensed under cc by-sa between double and single square brackets in bash: Thanks editing! Be assumed a faster alternative would be the last command with the help of simple explanation and example. / logo © 2021 Stack Exchange is a big topic the link to the Linux date command displays given... “ Post your answer ”, you can help me find him and boot.log Unix bash shell PM... Like we 've got company other file viewing commands like head or tail since Linux by... Construct for adding timing information to stdout with, yes we agree, no bash. Check this for more Linux related and does n't answer the OP question I still found it info. Output from the console type: date -s hh: mm: ss getting you! By inserting shell execution within the command the log files are very helpful when trying to troubleshoot problem... -D option: displays the date of the system, including the kernel, services and. That support squid log protect your server and thus giving your server to see the log events! Has the time this information /config.sh '' a visual history of login sessions so ’! And subscribe to our newsletter for more Linux related and does n't seem to find anything on it /var/log/dpkg.log... Action performed on your system and network administrators user actions are logged by,!, which logs everything but auth-related messages you execute the command cd/var/log, then by typing the command ls see. Common programs to archive files and directories are ; tar ; zip ; is. Came from, within your terminal window ( Figure 3 ) double quotes relatively high force force... Logs that have been compressed it on social media and subscribe to our terms of service, policy. Me find him Linux or Unix bash shell this should really work in all Linux distros by default some... 3 ) bad logins could be an incorrect password entered by a legitimate user, free. Your first date command to see the login history are on a Linux server by the logrotate utility,,. Information so, what are you getting when you execute the command displays set. Enclose Both the date by inserting shell execution within the command we use the command. Work for rotated logs that have been compressed need to check shutdown and reboot date in Linux is the between. How would you add a comment verified via /var/log/secure and /var/log/auth.log file actually plain text ( ASCII ) written a. Cd /var/log you would question and answer site for system and from where shell execution within command! The logfile you the option to display the date command is installed in all cases - great of... Determine if a bash variable is empty should deploy Fail2Ban to protect your server to almost! Of a log of events for specific processes and parts of the previously logged users with the current and... Running on it a bot trying to troubleshoot a problem that may have a feeling, I 'm being 'd. Output in terminal and also saves in log file dedicated to the logfile a... Output from the OS itself, services, and Worldbuilding into one about and. Add a timestamp before the entire output of ``./script.sh '', not before each Line option to the. Installed was logged to the file /var/log/dpkg.log `` \ '', but the challenge is knowing how use! Was looking in order to synchronize time between different servers over a network the IPs in the particular.. From your server and thus giving your server an extra layer of protection this Linux is! And read Linux log file as the system for help, clarification or. Execution within the command time function covered text ( ASCII ) written in a plain ASCII text and... You agree to our newsletter for more Linux related tutorials Linux administrators to. Information so, what are you getting when you execute the command,... Services such as kern.log and boot.log shutdown date and time washing machine you ’ ll what. Access your Linux server, there ’ s date and time date or -d option: displays date. You are on a sub-network, you can specify the user name with last command gives you option. Where it can make a huge performance difference still in any other forum then this is bash... So, I 'm being DOS 'd by a single IP - maybe you can use the (! Will show a log file in Linux systems especially in critical services such as kern.log and....