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Rename tmux sessions

Check if a file is a symlink with Bash

Detach from tmux sessions

Counting files and directories in Linux

Kill tmux sessions

Create a file of specific size in Linux

Using tail to follow log files

List tmux sessions

Tagging git commits

Becoming productive in the Ruby IRB console

Command-line interfaces with Ruby OptionParser

Bash Tutorial - Starting with Bash shell basics

Zypper cheat sheet