All commands (14,187)

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print first n characters of any file in human readble form using hexdump
Usefull to determine unknown file type

Attempt an XSS exploit on commandlinefu.com
Mouse around the title of this item, and note that your cookies are being logged to the console. If I were evil, I could instead send everyone's cookies to my site, and then post up-votes on all my submissions using their cookies, and try to delete every other submission, until clfu was completely pwned by me, redirecting people to malware and porn sites, and so on. Update - now fixed.

Kill any lingering ssh processes
Also ignoring "sshd" server is necessary since you should not kill ssh server processes.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Uptime in minute
Want to run scripts/programs in the system after starting X minute [ For letting the system to free ]? This will give uptime in minute.

Verify if ntpd is working properly
Used to verify if Network Time Protocol daemon is working properly.

Run a command as root, with a delay
$ sleep 1h ; sudo command or $ sudo sleep 1h ; sudo command won't work, because by the time the delay is up, sudo will want your password again.

Print current runlevel
Prints current runlevel and system start time. On older systems it also shows the last init state. Pretty useful on remote systems, pretty useless on local ones :)

Relocate a file or directory, but keep it accessible on the old location throug a simlink.
Used for moving stuff around on a fileserver

svn diff colorized
If colordiff utility installed, it is sometimes handy to call this command. Of course, you should create an alias for it. E.g. svndiff.


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