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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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See loaded modules in apache
Easiest way to check which modules are loaded in apache.

back ssh from firewalled hosts
host B (you) redirects a modem port (62220) to his local ssh. host A is a remote machine (the ones that issues the ssh cmd). once connected port 5497 is in listening mode on host B. host B just do a ssh 127.0.0.1 -p 5497 -l user and reaches the remote host'ssh. This can be used also for vnc and so on.

See the top 10 IP addresses in a web access log

Rename files in batch

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Download all files from podcast RSS feed
Neither of the others worked for me. This does.

Show a Command's Short Description
The whatis command displays a short description for the command you list on the command line. It is useful to quickly learn what a command does

Find number of computers in domain, OU, etc .

Show database sql schema from Remote or Local database
After ssh into server, run this command to show all the table structure and schema.

Install pip with Proxy
Installs pip packages defining a proxy


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