Commands tagged certificate (7)

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Compare an archive with filesystem
and you quickly know the files you changed

Make changes in .bashrc immediately available

Displays the attempted user name, ip address, and time of SSH failed logins on Debian machines
A variation of a script I found on this site and then slimmed down to just use awk. It displays all users who have attempted to login to the box and failed using SSH. Pipe it to the sort command to see which usernames have the most failed logins.

List mp3 files with less than 320 kbps bitrate.

To find the count of each open file on a system (that supports losf)

Converting video file (.flv, .avi etc.) to .3gp
ffmpeg -i = input file name -s = set frame size, qcif=176x144 -vcodec = force video codec -r = frame-rate [default = 25] -b = bit-rate [200 kb/s] -acodec = force audio codec -ab = audio bitrate in bits/s [64k] -ac = no. of audio channels [1] -ar = audio sampling frequency [44100 Hz] optional: -sameq = use same video quality as source (implies VBR) -f = force format -y = overwrite output files

Get ssh server fingerprints
Get your server's fingerprints to give to users to verify when they ssh in. Publickey locations may vary by distro. Fingerprints should be provided out-of-band.

download file1 file2 file3 file4 .... file 100

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

delete a particular line by line number in file
deletes line 3 in known_hosts text file


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