Use system performance tools for Linux to display process statistics.
Manage systemd services remotely over SSH protocol.
sponge utility to read standard input and safely write it out to the same file.
Fix “device excluded by a filter” LVM error.
Install Nexus Repository Manager (NXRM) 3.
Use templates inside shell scripts by substituting environment variables.
I have already described how to strace PHP-FPM processes, but you can also display a strace summary to get detailed information about count time, calls, and errors for each syscall.
Monitor file system events to restart service on every configuration change.
numfmt command-line utility which is a part of the standard GNU Core Utilities to pretty print decimal or binary numbers.