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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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.
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,…):
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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:
Change "sort -f" to "sort" and "uniq -ic" to "uniq -c" to make it case sensitive.
Count and Find all IP connected to my host through TCP connection.
If your version of curl does not support the --compressed option, use
curl -s http://funnyjunk.com | gunzip
curl -s --compressed http://funnyjunk.com
This command will allow to search for duplicate processes and sort them by their run count. Note that if there are same processes run by different users you'll see only one user in the result line, so you'll need to do:
ps aux | grep <process>
to see all users that run this command.
First column is number of photos, second column is the focal length.
count connections, group by IP and port
netstat has two lines of headers:
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
Added a filter in the awk command to remove them
Useful for checking the number and state of TCP connections.
We can get useful statistics from tcpdump with this simple command.
Thanks "Babak Farrokhi" to teaching me this ;)
Use ps instead of top. But do not use BSD options at all, they are confusing.
Use "s=" or "state=" to show consice process statuses.
this command will install the packages which provides the libraries you need to link with, e.g. when you compile something needs opengl libraries:
gcc -o testgl testgl.c -lGLEW -lGL -lGLU -lglut
you can use `/usr/lib/libGLEW.so /usr/lib/libGL.so /usr/lib/libGLU.so /usr/lib/libglut.so'
... plus do a sort according frequency
Counts the frequency of words in a file
list top committers (and number of their commits) of svn repository.
in this example it counts revisions of current directory.