Commands by mrttlemonde (10)

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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.

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Show what PID is listening on port 80 on Linux

Find Duplicate Files (based on size first, then MD5 hash)
This dup finder saves time by comparing size first, then md5sum, it doesn't delete anything, just lists them.

Copy specific files to another machine, keeping the file hierarchy
Notes: * Adjust the find command to your own filters. * The -P flag forces to keep absolute paths in the tarball, so that you can be sure that the exact same file hierarchy will be created on the second machine.

mkdir & cd into it as single command
The biggest advantage of this over the functions is that it is portable.

Emptying a text file in one shot
Within vi allow to empty a text file in one shot

Generate random valid mac addresses
Python Alternative

run complex remote shell cmds over ssh, without escaping quotes
Much simpler method. More portable version: ssh host -l user "`cat cmd.txt`"

find unreadable file

notify yourself when a long-running command which has ALREADY STARTED is finished
If you want to be notified when a long-running command is finished, but you have already started it: CTRL+Z $ fg; echo "finished" | sendmail [email protected] I use a script to post a tweet, which sends me a txt: $ fg; echo "finished" | tweet

list all file extensions in a directory
Just a little simplification.


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