BASH

PRIMARY CATEGORY → SHELL SCRIPTING

Components ⟡

• 
  • Globbing
• 
  • IFS
• 
  • Bash Versioning

Shortcuts ⌨

Reference I    •    Reference II

Default Mode → Emacs

Shorcuts’ Meaning

Key	Meaning
C	Control	C-c → Control+c
M	Alt	M-a → Alt+a
S	Shift	S-o → Shift+o
Super	Windows	Super-s → Windows+s
Return	Enter	C-S-Return → Control+Shift+Enter
-	+	C-z → Control+z
{a,b,c,d}	a b c d	C-{a,b,c,d} → C-a C-b C-c C-d

Emacs

Motion

Action	Shorcut
Move to the Beginning/End of the Line	C-a C-e
Move Backward/Forward One Character	C-b C-f
Move Backward/Forward One Word	M-b M-f
Move to the Beginning of the line Return to the previous Position	C-x C-x

Edition

Action	Shortcut
Delete all Characters Before/After the Cursor	C-u C-k
Delete One Word Backward/Forward	C-w M-d
Delete One Character Backward/Forward	C-h C-d
Yank (Paste the last element Deleted or Cut)	C-y
Convert Word to Uppercase/Lowercase	M-u M-l

History

Action	Shortcuts
Move to Previous/Next Command	C-p C-n
Reverse/Forward Search (History Searching Mode)	C-r C-s
Leave History Searching Mode	C-g
Reverse Search - Run the Current Command	C-o

Misc

Action	Shortcuts
Execute Command (Sames as Return)	C-j C-m
Clear the Screen	C-l
Interrupt Current Process (SIGINT)	C-c
Suspend Current Process (SIGTSTP)	C-z
Last Command Repetition (History Expansion)	!!
Paste Previous Command’s Last Argument	M-dot !$ $_
Paste N Command’s Last Argument	!-N:$
Toogle to Command Line Editor	C-x C-e

---

Code Snippet

$ nvim foo.bash

#!/usr/bin/env bash
 
bash()
{
        case $( /bin/ps -p "$PPID" -o comm= ) in
 
                *bash)  return 0
                        ;;
 
                *)      printf "Shell is not a Bash. Exiting...\n" 1>&2
                        return 1
                        ;;
        esac
}
 
bash || exit 99

$ chmod u+x foo.bash
$ dash -c './foo.bash'
Shell is not Bash. Exiting...