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Trim linebreaks

rename files according to file with colums of corresponding names
Maybe simpler, but again, don't know how it will work with space in filename.

Use a var with more text only if it exists
See "Parameter Expansion" in the bash manpage. They refer to this as "Use Alternate Value", but we're including the var in the at alternative.

copy partition table from /dev/sda to /dev/sdb

vim read stdin

Factory reset your android device via commandline.

Check if x509 certificate file and rsa private key match
A x509 certificate and a rsa key file have in common a parameter called modulus, it is a very long hexadecimal number. That value is unique for each certficate / key pair. The command allows to do the check of this pair of values in a script using a great feature of bash. "

Indent a one-liner.
Bash builtin type also indents the function.

check open ports without netstat or lsof

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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