Commands tagged tricks (5)

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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"

Find number of computers in domain, OU, etc .

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"

Fetch the current human population of Earth
They are using json now

Capture data in ASCII. 1500 bytes
Sniffing traffic on port 80 only the first 1500 bytes

Extract all of the files on an RPM on a non-RPM *nix

Execute a command on logout
Execute a command on shell logout,and run it until is finished,then shell is closed.

Convert "man page" to text file
You can convert any UNIX man page to .txt

How to backup hard disk timely?
'data' is the directory to backup, 'backup' is directory to store snapshots. Backup files on a regular basis using hard links. Very efficient, quick. Backup data is directly available. Same as explained here : http://blog.interlinked.org/tutorials/rsync_time_machine.html in one line. Using du to check the size of your backups, the first backup counts for all the space, and other backups only files that have changed.

Skip filenames with control characters, a.k.a tab,newline etc


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