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commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. 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.


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Universal configuration monitoring and system of record for IT.
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News

May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!
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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Commands by IF_Rock from sorted by
Terminal - Commands by IF_Rock - 3 results
gawk 'BEGIN {RS="\n\n"; if (ARGV[1]=="-i")IGNORECASE=1;ARGC=1}{if (IGNORECASE)Text[tolower($0)]=$0;else Text[$0]=$0 };END {N=asort(Text);for(i=1;i<=N;i++)printf "%s\n\n",Text[i]}' -i<Test.txt
2011-05-11 01:03:30
User: IF_Rock
Functions: gawk
0

Sorts blank line delimited paragraphs. '-i' -- case insensitivity option -- removes redundant paragraphs in a case insensitive way, and then sorts in a case insensitive way.

If you search CommandLineFu with multiple anded terms searches, redundancy can ensue. This sorts the retrieved text (among other kinds of data), and removes the redundancy.

gawk 'BEGIN {RS="\n\n"; if (ARGV[1]=="-i"){IGNORECASE=1; ARGC=1}};{Text[NR]=$0};END {asort(Text);for (i=1;i<=NR;i++) printf "%s\n\n",Text[i] }' -i<Zip.txt
2011-05-10 19:08:27
User: IF_Rock
Functions: gawk printf
0

Among other things, this allows the sorting of comment descriptions and command lines retrieved as text from CommandLineFu.com.

{ command1 args1 ; command2 args2 ; ... }
2011-04-12 20:01:51
User: IF_Rock
0

{ ... } vs ( ... ) reduces the process count, I believe.

Typically, I use this logic to redirect a series of commands to a pipe -- { command1 args1 ; command2 args2}|less -- or file -- { command1 args1 ; command2 args2}>foo -- or to spawn the series as a background process -- { ... } & .