Commands by ala2200 (1)

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Create a continuous digital clock in Linux terminal
Source: http://www.my-guides.net/en/guides/linux/364-how-to-create-a-continuous-digital-clock-in-linux-terminal

Debug redirects between production reloads
Watches the headers of a curl, following any redirects and printing only the HTTP status and the location of the possible redirects.

Optimize Xsane PDFs
Xsane produces PDFs that are too large - particularly multipage PDFs. This command compresses them. If you do not use A4, remove the -sPAPERSIZE flag.

Setup a persistant SSH tunnel w/ pre-shared key authentication
This creates a persistent ssh -i /path/to/key -ND local-IP:PORT [email protected] connection. You may have to install autossh. -f puts in daemon mode. if you are having trouble, try it without -f.

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"

Download all Phrack .tar.gzs

See loaded modules in apache
Easiest way to check which modules are loaded in apache.

Robust expansion (i.e. crash) of bash variables with a typo
By default bash expands an unbound variable to an empty string. This can be dangerous, if a critical variable name (a path prefix for example) has a typo. The -u option causes bash to treat this as an error, and the -e option causes it to exit in case of an error. These two together will make your scripts a lot safer against typos. The default behaviour can be explicitly requested using the ${NAME:-} syntax. A (less explicit) variation: #!/bin/bash -eu

Ultimate current directory usage command
Based on the MrMerry one, just add some visuals to differentiate files and directories

Making scripts runs on backgourd and logging output
Save all output to a log.


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