Commands using ps (300)

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Selecting a random file/folder of a folder
random file from files in directory

Convert JSON to YAML
You need to install the Catmandu Perl module via `cpanm Catmandu`

Quick searching with less

Burn CD/DVD from an iso, eject disc when finished.
cdrecord -scanbus will tell you the (x,y,z) value of your cdr (for example, mine is 3,0,0)

Output files without comments or empty lines
Filter comments and empty lines in files. I find this very useful when trying to find what values are actually set in a very long example config file. I often set an alias for it, like : alias nocomment='grep -v "^\($\|#\)"'

list block devices
Shows all block devices in a tree with descruptions of what they are.

rsync with progress bar.
transfer files from localhost to a remotehost.

Verbosely delete files matching specific name pattern, older than 15 days.

which process is accessing the CDROM

copy public key


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