Commands by noneyroy123 (0)

  • bash: commands not found

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Turning off display
To turn off monitor: xset dpms force off To turn on, simply press a key, or move mouse/mousepad.

Perl one-liner to determine number of days since the Unix epoch
There are some environments that use this value for password and account expiration. It's helpful to be able to quickly determine the number of days since the Unix epoch (dse) when working directly with the configuration files as an administrator.

Print stack trace of a core file without needing to enter gdb interactively
This does almost the same thing as the original, but it runs the full backtrace for _all_ the threads, which is pretty important when reporting a crash for a multithreaded software, since more often than not, the signal handler is executed in a different thread than the crash happened.

Perl oneliner to print access rights in octal format
This prints file access rights in octal - useful when "stat" is unavailable.

Delete all non-printing characters from a file
tr has some predefined sets of characters that are more convenient to use than characters codes

encode a text to url_encoded format
usefull for posts via wget

Change a specific value in a path
Awk replaces the value of a specific field while retaining the field separator "/" .

Install pip with Proxy
Installs pip packages defining a proxy

"Clone" a list of installed packages from one Debian/Ubuntu Server to another

restoring some data from a corrupted text file
man tac When there is a bad block in the middle of your file, you can see its begninning with `cat' and its end with `tac'. But both commands terminates with an error. So this sequence rebuilds a new file without badblock.


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