File manager written in awk

• cd on exit: cd $(command fm.awk)
• last path: export LASTPATH="$HOME/.cache/lastpath"; cd $(cat -u $LASTPATH) && $TERMINAL -e fm.awk

NUMBERS:
	[num] - move cursor to entry [num]
	[num]+G - Go to page [num]

NAVIGATION:
	k/↑ - up                      j/↓ - down
	l/→ - right                   h/← - left
	n/PageDown - PageDown         p/PageUp - PageUp
	g/Home - first page           G/End - last page
	H - first entry               L - last entry
	M - middle entry

MODES:
	/ - search
	: - commandline mode

SELECTION:
	␣ - bulk (de-)selection       V - bulk (de-)selection all

PREVIEW:
	v - toggle preview
	> - more directory ratio      < - less directory ratio

MISC:
	r - refresh                   a - actions
	- - previous directory        ! - spawn shell
	? - show keybinds             q - quit

• Bulk selection
• Bulk selection all
• Directory / File preview
• Actions:
  • History
  • mv
  • cp -R
  • ln -sf
  • rm -rf && yes-no prompt

edit fm.awk, modify the first configuration section:

    ###################
    #  Configuration  #
    ###################

    OPENER = ( ENVIRON["OSTYPE"] ~ /darwin.*/ ? "open" : "xdg-open" )
    LASTPATH = ( ENVIRON["LASTPATH"] == "" ? ( ENVIRON["HOME"] "/.cache/lastpath" ) : ENVIRON["LASTPATH"] )
    HISTORY = ( ENVIRON["HISTORY"] == "" ? ( ENVIRON["HOME"] "/.cache/history" ) : ENVIRON["HISTORY"] )
    CMDHIST = ( ENVIRON["CMDHIST"] == "" ? ( ENVIRON["HOME"] "/.cache/cmdhist" ) : ENVIRON["CMDHIST"] )
    PREVIEW = 0
    RATIO = 0.35
    HIST_MAX = 5000

• OPENER is the default file opener.
• LASTPATH is path which fm.awk were last time.
• HISTORY is the history for directory visited.
• CMDHIST is the command line history, which only the unique command will be left.
• PREVIEW is a boolean value which toggles preview or not.
• RATIO is the ratio for directory / preview.
• HIST_MAX is the maximum number of HISTORY.

• :cd /path/to/destination
  • can be relative: :cd ../../ goes to parents two tiers
• :cmd on each selected item.
  • e.g., After selection, :chmod +x to give execution permission on selected entries.
• :cmd {} destination to replace {} with each selected item and execute the whole command.
  • e.g., After selection, :mv {} ~ will move selected item to $HOME directory.
• cmd can be shell alias (bash and zsh confirmed. fish not sure).
• tab completion on :cd and search (/)
• tab completion on command line mode based on command line history.
• left / right arrow to move cursor; up / down arrow to access command line history.

• Image preview (start using ueberzug)
• Make preview script be independent
• Make cmd bottom line can be scrollable horizontally even when the string is over the dimension
• Eliminate action menu by implementing all of those in cmd mode
• Fix some bugs