Commands using netstat (131)

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watch iptables counters
Watch the number of packets/bytes coming through the firewall. Useful in setting up new iptables rules or chains. Use this output to reorder rules for efficiency.

bash: display disks by id, UUID and HW path
Shows a tree of the disks. Requires "tree"

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Get AWS temporary credentials ready to export based on a MFA virtual appliance
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

en/decrypts files in a specific directory
To decrypt the files replace "ccenrypt" with "ccdecrypt. ccrypt(1) must be installed. It uses the AES (Rijndael) block cipher. To make it handier create an alias.

Check whether laptop is running on battery or cable
The original proc file doesn't exist on my system.

Show all the available information about your current distribution, package management and base
Just run this command and it will printout all the info available about your current distribution and package management system.

find an unused unprivileged TCP port
Not really better - just different ;) There's probably a really simple solution out there somewhere...

Remove all files but one starting with a letter(s)
Remove everything in current directory except files starting with "ca".

exclude file(s) from rsync
rsyncs files to a server excluding listed files also a file can be used to exclude common exclude rules and/or to exclude a ton of files, like so: $rsync --exclude-from '~/.scripts/exclude.txt' where exclude.txt has one rule per line: *.mp3 *.svn*

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