Commands by idemal (1)

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Use last argument of last command
Bash shortcut to work with the last argument of your last command

Open Port Check
also could specify port number: lsof -ni TCP:80

Sort on multiple dis-contiguous keys/fields (can even specify key number/field from the end)
Notes: 1) -n-1 means sort key is the last field 2) -l is important if each separate record is on a new line (usually so for text files) 3) -j tells msort not to create log file (msort.log) in the working directory 4) may need to install msort package. 5) msort does lot more. Check man msort

Remove EXIF data from images with progress

Save the list of all available commands in your box to a file
When you press TAB twice in your prompt, bash tells you something like "Display all 4567 possibilities? (y or n)" But when you press "y" you only get the list in the terminal output and, if you want to save it to a file, you have to copy it by hand from the vterm screen. With this utility you save the list to a file or pipe it to another command at will You can use the file saved list to grep for a particular pattern, useful if you are searching for a command but you only remember a few letters

Get the serial numbers from HP RAID
This dumps serial numbers of all the drives but HP warranty check does not say they are valid ...

Generate diff of first 500 lines of two files
Useful for massive files where doing a full diff would take too long. This just runs diff on the first 500 lines of each. The use of subshells to feed STDIN is quite a useful construct.

Remove a range of lines from a file

Convert all .wav to .mp3
Audio convert is a script that uses zenity and lame to transcode virtually any format to any other format provided you have the libraries installed to do so.

Work out numerical last month
Work out last months numerical value.


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