Commands tagged schedule (6)

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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"

Use tee to process a pipe with two or more processes
Tee can be used to split a pipe into multiple streams for one or more process to work it. You can add more " >()" for even more fun.

Empty a file
The downside of output redirection is that you need permissions. So something like $ > file won't play nicely w/ sudo. You'd need to do something like $ bash -c '> file' instead, you could go w/ $ sudo truncate -s0 file

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

Capture SMTP / POP3 Email

creating you're logging function for your script
You could also pipe to logger.

Changing the terminal title to the last shell command
You can set the previous bash command as the terminal title by this command. Explanation: -trap assigns a command to execute at a given bash signal. -in the $BASH_COMMAND you find the last command -you can set the terminal title with the escape sequence: \e]0;this is the title\007 -to let the echo care about the backslashes give the -e to it Since trap is a built in bash command you find more informatin in 'man bash'for more Source: http://www.davidpashley.com/articles/xterm-titles-with-bash.html

Delete a file/directory walking subdirectories (bash4 or zsh)

Randomize lines in a file
Works in sort (GNU coreutils) 7.4, don't know when it was implemented but sometime the last 6 years.

Equivalent to ifconfig -a in HPUX
Command is properly working on HP-UX 11.31


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