Commands by lalit241 (2)

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Reverse ssh
Both hosts must be running ssh and also the outside host must have a port forwarded to port 22.

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

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

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

Colorful man
Colourful with vim regex finding goodness! Replace the 'man' with the page to be looked up. I actually have as a function in my .profile function vman { /usr/bin/man $* | /usr/bin/col -b | /usr/bin/iconv -c | view -c 'set ft=man nomod nolist nospell nonu' -

fix flash video (flv) file (ffmpeg)
Rebuild flv files that are broken (can't seek). This method probably works for other video/audio formats that can become broken in the same way.

Get AWS temporary credentials ready to export based on a MFA virtual appliance
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Display a wave pattern
Purely frivolous - print a sine/cosine curve to the console - the width varies as it progresses. Ctrl-C to halt.

Find Duplicate Files (based on size first, then MD5 hash)
If you have the fdupes command, you'll save a lot of typing. It can do recursive searches (-r,-R) and it allows you to interactively select which of the duplicate files found you wish to keep or delete.

Change files case, without modify directories, recursively
Change files case, without modify directories, recursively. ... fucking vfat


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