Commands tagged procfs (2)

  • Checks whether IPv6 is enabled system-wide by reading from procfs. Show Sample Output


    1
    printf "IPv6 is "; [ $(cat /proc/sys/net/ipv6/conf/all/disable_ipv6) -eq 0 ] && printf "enabled\n" || printf "disabled\n"
    lordtoran · 2019-02-05 21:01:32 0
  • Sometimes you want to see all of the systcls for a given $thing. I happened to need to easily look at all of the vm sysctls between two boxes and compare them. This is what I came up with. Show Sample Output


    0
    find /proc/sys/vm -maxdepth 1 -type f | while read i ; do printf "%-35s\t%s\n" "$i" "$(<$i)" ; done | sort -t/ -k4
    SEJeff · 2012-05-25 16:34:16 0

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands


Check These Out

Does a full update and cleaning in one line

Binary Clock
Binary clock with separate H:M:S.

Mac OS X: Change Color of the ls Command
I use terminal with black background on the Mac. Unfortunately, the default ls color for the directory is blue, which is very hard to see. By including the line above in my ~/.bash_profile file, I changed the directory's color to cyan, which is easer to see. For more information on the syntax of the LSCOLORS shell variable: $ man ls I tested this command on Mac OS X Leopard

[WinXP]Use as a shortcut in the SendTo menu to open a cmd window for a given folder.
This comes in handy for me when I am developing and testing Perl command line scripts. http://technet.microsoft.com/en-us/library/bb490880.aspx

Python version 3: Serve current directory tree at http://$HOSTNAME:8000/
In Python version 3, the module was merged into http.server. Gentlemen, change your aliases.

Display your ${PATH}, one directory per line
This works in bash and zsh. You may also want to alias it, if you need to look at it often... $ alias lpath="echo \$PATH | tr : \\\\n" "\$PATH" to make sure to look at your current $PATH

Extend a logical volume to use up all the free space in a volume group

Find usb device
I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him

Substitute audio track of video file using mencoder
Creates a new video file with video stream copied from input file and a different audio stream

convert doc to pdf
convert to pdf and many other formats and vise versa to get a list of supported formats, run $ unoconv --show


Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: