Commands by onenaturalstone (0)

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Find top 5 big files
zsh: list of files sorted by size, greater than 100mb, head the top 5. '**/*' is recursive, and the glob qualifiers provide '.' = regular file, 'L' size, which is followed by 'm' = 'megabyte', and finally '+100' = a value of 100

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Show the UUID of a filesystem or partition
Shows the UUID of the given partition (here /dev/sda7). Doesn't need to be root.

Make a ready-only filesystem ?writeable? by unionfs
First look into /etc/modules if you have unionfs (or squashfs) support. If not, add the modules. UnionFS combines two filesystems. If there is a need to write a file, /tmp/unioncache will be used to write files (first create that directory). Reads will be done where the file is found first. http://tldp.org/HOWTO/SquashFS-HOWTO/creatingandusing.html

Make ISO image of a folder
Create ISO image of a folder in Linux. You can assign label to ISO image and mount correctly with -allow-lowercase option.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

View online pdf documents in cli
Probably will not work very well with scanned documents.

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

Get disk quota usage openvz using vzlist
OpenVZ: Get disk quota usage for your VEID

Squish repeated delimiters into one
This can be particularly useful used in conjunction with a following cut command like $echo "hello::::there" | tr -s ':' | cut -d':' -f2 which prints 'there'. Much easier that guessing at -f values for cut. I know 'tr -s' is used in lots of commands here already but I just figured out the -s flag and thought it deserved to be highlighted :)


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