Commands by huazhihao (11)

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save command output to image
It's just because the original command was not working on version's 6.7.7-10.

run last command with root
you will be sad after you run a command and find out it needs root, so you should run it again but with prefix sudo. so this line is to make it simple. just 'sudo !!'

direct a single stream of input (ls) to multiple readers (grep & wc) without using temporary files

Monitor memory usage
Monitor with watch command and vmstat, memory usage

Delete all but latest file in a directory
Useful for deleting old unused log files.

Copy a directory recursively without data/files

Create a nifty overview of the hardware in your computer
After the command is done, open the html file in a browser

Reuse last parameter
Reuse the last parameter of the previous command line

AWK: Set Field Separator from command line

Detect encoding of a text file
This command gives you the charset of a text file, which would be handy if you have no idea of the encoding.


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