(TIL) Nix: Merge pdf files
You can use qpdf to merge pdf files into a single file as follow:
Recent Posts
(TIL) Nix: Monitor the progress of data through a pipe
You can use pv to monitor the progress of any pipe, by putting it between input/output pipes.
(TIL) Nix: List parent pid with ps
The ps command, which stands for process status, is a great way to find different processes running on a machine. Information like their pid (process id) is ...
(TIL) Nix: Create A File Descriptor with Process Substitution
Process substitution can be used to create a file descriptor from the evaluation of a shell command. The syntax for process substitution is <(LIST) where ...
(TIL) Nix: PID Of The Current Shell
$ expands to the process ID of the shell. So, you can see the PID of the current shell with echo $$.