Commands by retrodanny (6)

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find which lines in a file are longer than N characters
Filter out lines of input that contain 72, or fewer, characters. This uses bash only. ${#i} is the number of characters in variable i.

Find and list users who talk like "lolcats"
Greps IRC logs for phrases and lists users who said them.

Rename files in batch

Stream audio over ssh
This one doesn't need to convert to wav.

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

Simple example of the trap command

Forward port 8888 to remote machine for SOCKS Proxy
Simply change your web browser's proxy settings to point to a SOCKS proxy at port 8888 and you're good to go.

Include a remote file (in vim)
Like vim scp://yourhost//your/file but in vim cmds.

Get absolut path to your bash-script
Another way of doing it that's a bit clearer. I'm a fan of readable code.

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"


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