Commands tagged CLFUContest (20)

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Edit video by cutting the part you like without transcoding.
Examples: The following will take frames starting at 15.2 seconds for a total of 45.9 seconds: $ mencoder -ss 15.2 -endpos 30.7 -oac copy -ovc copy mymovie.avi -o myeditedmovie.avi Keep in mind -endpos is the total time, i.e. the output video in this is 3 minutes 3 seconds in length: $ mencoder -ss 1 minute -endpos 2 minutes 3 seconds -oac copy -ovc copy mymovie.avi -o myeditedmovie.avi

combine `mkdir foo && cd foo` into a single function `mcd foo`
I find that I create a directory and then cd into that directory quite often. I found this little function on the internets somewhere and thought I'd share it. Just copy-paste it into you ~/.bash_profile and then `source ~/.bash_profile`.

Remove duplicate lines whilst keeping empty lines and order
Remove duplicate lines whilst keeping order and empty lines

Get a list of IP Addresses that have failed to login via SSH
This command shows a sorted list of the IP addresses from which there have been authentication errors via SSH (possible script kiddies trying to gain access to your server), it eliminates duplicates so it's easier to read, but you can remove the "uniq" command at the end, or even do a "uniq -c" to have a count of how many times each IP address shows in the log (the path to the log may vary from system to system)

Download a numbered sequence of files

Countdown Clock
Countdown clock - Counts down from $MIN minutes to zero. I let the date command do the maths. This version doesn't use seq.

Monitor RAID IO Usage
Shows the IO of the raid sync

faster version of ls *
I know its not much but is very useful in time consuming scripts (cron, rc.d, etc).

Split a tarball into multiple parts
Create a tar file in multiple parts if it's to large for a single disk, your filesystem, etc. Rejoin later with `cat .tar.*|tar xf -`

convert a .wmv to a .avi


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