cd - change the working directory

Examples

$ cd

go home

$ cd -

go back to the previous directory

$ cd ..

up one level

Gotchas

• cd is a shell builtin - it has to be, since a child process could not change YOUR directory.
• In a script always write cd /some/dir || exit 1. shellcheck SC2164.

Taught in

• 0.5 Saturation and the USE method
• 0.17 Budget arithmetic: minutes, requests, burn rate, time left
• 0.29 Running an incident: severity, roles, comms, and the clock
• 0.31 Writing the postmortem: evidence, timeline, blameless language
• 0.35 Measuring toil, and choosing what to remove first
• 1.3 The tree
• 1.7 Driving the shell: exit codes, chaining, redirection
• 4.5 Permission bits and octal