Commands tagged version (12)

  • Find distro name and/or version/release

    Works for most distributions, tested on Ubuntu, Fedora, CentOS, Gentoo, SUSE, RedHat. Debian and Slackware: cat /etc/*version Show Sample Output


    10
    cat /etc/*-release
    sudopeople · 2009-02-26 08:22:01 6
  • Backup with versioning

    Apart from an exact copy of your recent contents, also keep all earlier versions of files and folders that were modified or deleted. Inspired by EVACopy http://evacopy.sourceforge.net Show Sample Output


    5
    backup() { source=$1 ; rsync --relative --force --ignore-errors --no-perms --chmod=ugo=rwX --delete --backup --backup-dir=$(date +%Y%m%d-%H%M%S)_Backup --whole-file -a -v $source/ ~/Backup ; } ; backup /source_folder_to_backup
    pascalv · 2018-08-02 21:27:29 0
  • List all installed PERL modules by CPAN

    This command will give you the detailed information about the installed perl modules i.e. installed path, Link type, version, files etc. Show Sample Output


    3
    perldoc perllocal
    octopus · 2010-04-14 10:57:56 1
  • Show Mac OS X version information


    2
    sw_vers
    theoj · 2009-08-29 21:27:18 0
  • Make sure your script runs with a minimum Bash version

    If you use new features of a certain Bash version in your shell script, make sure that it actually runs with the required version.


    1
    if [ -z "${BASH_VERSINFO}" ] || [ -z "${BASH_VERSINFO[0]}" ] || [ ${BASH_VERSINFO[0]} -lt 4 ]; then echo "This script requires Bash version >= 4"; exit 1; fi
    hfs · 2011-02-25 11:02:47 0
  • Displays the version of the Adobe Flash plugin installed

    This is for Debian, simply change the path if your Flash plugin is installed elsewhere. Show Sample Output


    1
    strings /usr/lib/flashplugin-nonfree/libflashplayer.so |grep ^LNX
    domicius · 2012-04-25 10:34:57 0
  • Backup with versioning


    1
    & 'C:\cwRsync_5.5.0_x86_Free\bin\rsync.exe' --force --ignore-errors --no-perms --chmod=ugo=rwX --checksum --delete --backup --backup-dir="_EVAC/$(Get-Date -Format "yyyy-MM-dd-HH-mm-ss")" --whole-file -a -v "//MyServer/MyFolder" "/cygdrive/c/Backup"
    pascalv · 2020-03-06 10:17:42 0
  • Check version of DNS Server

    Show Sample Output


    0
    nslookup -q=txt -class=CHAOS version.bind NS.PHX5.NEARLYFREESPEECH.NET
    unixmonkey4063 · 2009-06-02 19:54:24 1
  • Set Java home directory based on version for Mac OSX Yosemite

    Useful if you have multiple versions of Java installed. The 1.7 pkg for Mac doesn't tell you anything about where it's putting stuff. Show Sample Output


    0
    export JAVA_HOME=$(/usr/libexec/java_home -v 1.7)
    robinsonaarond · 2015-07-30 18:50:51 0
  • Display which distro is installed

    Cleaner than the top alternative Show Sample Output


    0
    test `uname` = Linux && lsb_release -a 2>/dev/null || ( test `uname` = SunOS && cat /etc/release || uname -rms )
    amhhhhhhh · 2017-04-25 13:35:40 0
  • Find which version of Linux You are Running


    -4
    lsb_release -d
    tebeka · 2009-05-07 16:19:04 6
  • Display which distro is installed

    Found in comments section works on most Linux flavors. Show Sample Output


    -8
    test `uname` = Linux && lsb_release -a || ( test `uname` = SunOS && cat /etc/release || uname -rms )
    virtualshock · 2009-07-07 20:51:30 0

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Getting a domain from url, ex: very nice to get url from squid access.log

Easily decode unix-time (funtion)
A shell function using perl to easily convert Unix-time to text. Put in in your ~/.bashrc or equivalent. Tested on Linux / Solaris Bourne, bash and zsh. using perl 5.6 and higher. (Does not require GNU date like some other commands)

Downmix first audio stream from 7.1 to 5.1 keeping all other streams
Useful for Roku which does not support 7.1. Useful resources: - https://trac.ffmpeg.org/wiki/Map - https://trac.ffmpeg.org/wiki/Encode/HighQualityAudio - https://superuser.com/questions/852400/properly-downmix-5-1-to-stereo-using-ffmpeg

find the path of the java called from the command line
The output will likely point to '/etc/alternatives/java'. So find out where that points by issuing ls -l like this: ls -l /etc/alternatives/java

Start dd and show progress every X seconds
Adjust "sleep X" to your needs. *NOTE: First sleep is required because bash doesn't have a "post-test" syntax (do XXX while).

List all authors of a particular git project
This should work even if the output format changes.

Generate an XKCD #936 style 4 word passphrase (fast)
This restricts things 3 ways: 1. No capitalized words, hence no proper names. 2. No apostrophes. 3. Restricts size to range (3,7)

Auto-log commands
A quick alias I use right before logging into a server so that I have a log of the transactions as well as the ability to re-connect from another computer. Useful for when your boss says "what commands did you run again on that server?" and you had already closed the terminal ;) I wrapped it in a script now, with more features, but this is the heart of it. Never leave home without it.

extract column from csv file
extracts the 5th column using the delimiter ','

Hide the name of a process listed in the `ps` output
$ exec -a $NAME $COMMAND $ARGS `your_cmd -erase_all_files` is the real process, but harmless-looking getty appears in the process table. Never actually had a need to do this, but interesting nonetheless... Tested in bash, dash. $ -a $NAME "pass NAME as the zeroth argument to COMMAND", i.e. customise the name of the process (as commonly seen with `ps`)

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