Docker has command line programs, but they are not well suited to automation. Return values and pars-able output are both lacking, but there is an API that you can use instead. The Dockerd api can listen on a local socket or even a remote accessible port, but in these examples I'll show local socket only.

Continue reading Docker API from CLI...

The following may not apply to all shells.

Job control

• Resume job after suspend: ctrl-q
• Resume job in background: bg <job number>
• Resume job in foreground: fg <job number>
• Suspend delay (suspend at stdin): ctrl-y
• Suspend: ctrl-z

Command line laziness

• Recall history line 66: !66
• Recall last command: !!
• Recall last arguement from last command: !$
• Recall all arguements from last command: !*
• Clear shell history: history -c
• Delete shell history entry: history -d <number>
• Rename rpmnew files:

find -type f -name "*.rpmnew" | sed 's/\(^.*\)\(\.rpmnew\)$/mv -f \1\2 \1/' |sh

• Search and replace files in place:

find /path -name "*.*" -exec | perl -pi -e 's///g' {} \;

• vi cli editing: set -o vi Now esc to enter command mode where vi keys work. Pressing enter returns to normal mode.