Commands by zwxajh (1)

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List the largest directories & subdirectoties in the current directory sorted from largest to smallest.

finding more large files

Lists all listening ports together with the PID of the associated process
Lists all opened sockets (not only listeners), no DNS resolution (so it's fast), the process id and the user holding the socket. Previous samples were limiting to TCP too, this also lists UDP listeners.

Always tail/edit/grep the latest file in a directory of timestamped files
zsh only If you have this command in your history, you can always re-run it and have it reference the latest file. The glob matches all timestamped files and then the resulting array is sorted by modification time (m) and then the first element in the sorted array is chosen (the latest)

Download all MegaTokyo strips
A simple script for download all the MegaTokyo strips from the first to the last one

cd to (or operate on) a file across parallel directories
This is useful for quickly jumping around branches in a file system, or operating on a parellel file. This is tested in bash. cd to (substitute in PWD, a for b) where PWD is the bash environmental variable for the "working directory"

Release memory used by the Linux kernel on caches
=1 --> to free pagecache =2 --> to free dentries and inodes =3 --> to free pagecache, dentries and inodes

Edit a file in vim (at the first error) if it is not well formed xml.
Validate a file using xmllint. If there are parser errors, edit the file in vim at the line of the first error.

multiline data block parse and CSV data extraction with perl
extract data in multiline blocks of data with perl pattern matching loop

Check motherboard manufacturer, product name, version and serial number
Very slick way to check your motherboard manufacturer, product name, version and serial number.


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