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Show all usernames and passwords for Plesk email addresses

Read just the IP address of a device

Get your current Public IP

check open ports without netstat or lsof

C one-liners
$ /lib/ld-linux.so.2 is the runtime linker/loader for ELF binaries on Linux. =(cmd) is a zsh trick to take the output for the command "inside" it and save it to a temporary file. $ echo -e 'blah' | gcc -x c -o /dev/stdout - pipes the C source to gcc. -x c tells gcc that it's compiling C (which is required if it's reading from a pipe). -o /dev/stdout - tells it to write the binary to standard output and read the source from standard input. because of the the =() thing, the compiled output is stashed in a tempfile, which the loader then runs and executes, and the shell tosses the tempfile away immediately after running it.

list files recursively by size

Outputs a 10-digit random number

Getting GnuPG Public Keys From KeyServer
get my GPG-key from pgp.surfnet.nl, key id is 19886493.

sshfs usage
you can use this command for mounting local directory to a remost directory..

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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