Terminal utilities

This section consists of quick references for the various functions/utilities that can be leveraged when interacting with Scrutinizer via command line.

See also

See this page for documentation for Scrutinizer’s interactive command-line utility (scrut_util).

Tmux

When running a script or operation that may take a significant amount of time (e.g., upgrades, migrations, etc.), it is strongly recommended to do so within a tmux session.

Frequently used tmux commands/actions:

Starting a new tmux session (with an optional SESSION_NAME and/or WINDOW_NAME)

tmux new [-s SESSION_NAME] [-n WINDOW_NAME]

Terminating the current (or a specified) tmux session:

tmux kill-ses [-t SESSION_NAME]

Connecting/attaching to the last (or a specified) tmux session:

tmux at [-t SESSION_NAME]

When running a script or operation, it can be also be helpful to create a new window or pane where the log file can be tailed using less (see below).

Window shortcuts

Create new window	Ctrl + B, C
Previous/next window	Ctrl + B, P/N
Switch to specified window number	Ctrl + B, 0-9
Close current window	Ctrl + B, &

Pane shortcuts

Split current window into left/right panes	Ctrl + B, %
Split current window into top/bottom panes	Ctrl + B, “
Toggle between pane layouts	Ctrl + B, Spacebar
Switch to pane in the specified direction	Ctrl + B, Arrow key
Close current pane	Ctrl + B, X

less

When running a migration, upgrade, or other operation in a tmux session, the log file can be tailed using less in a different window or pane:

less [-i] <PATH/FILENAME>

Note

Less searches are case-sensitive by default. The -i option toggles on case-insensitive searches.

Less shortcuts

Tail file	Shift + F
Stop tailing	Ctrl + C
Navigate forward by one screen	Ctrl + F
Navigate backward by one screen	Ctrl + B
Go to end of file	Shift + G
Search forwards for PATTERN	/
Search backwards for PATTERN	?
Next search match	n
Previous search match	N
Filter for PATTERN	&
Filter out PATTERN	!