/usr/bin/less

                   SUMMARY OF LESS COMMANDS

      Commands marked with * may be preceded by a number, N.
      Notes in parentheses indicate the behavior if N is given.
      A key preceded by a caret indicates the Ctrl key; thus ^K is ctrl-K.

  h  H                 Display this help.
  q  :q  Q  :Q  ZZ     Exit.
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                           MOVING

  e  ^E  j  ^N  CR  *  Forward  one line   (or N lines).
  y  ^Y  k  ^K  ^P  *  Backward one line   (or N lines).
  J                 *  Forward  one line, but don't stop at end-of-file.
  K  Y              *  Backward one line, but don't stop at beginning-of-file.
  ESC-j             *  Forward  one file line (or N file lines).
  ESC-k             *  Backward one file line (or N file lines).
  f  ^F  ^V  SPACE  *  Forward  one window (or N lines).
  b  ^B  ESC-v      *  Backward one window (or N lines).
  z                 *  Forward  one window (and set window to N).
  w                 *  Backward one window (and set window to N).
  ESC-SPACE         *  Forward  one window, but don't stop at end-of-file.
  ESC-b             *  Backward one window, but don't stop at beginning-of-file.
  d  ^D             *  Forward  one half-window (and set half-window to N).
  u  ^U             *  Backward one half-window (and set half-window to N).
  ESC-)  RightArrow *  Right one half screen width (or N positions).
  ESC-(  LeftArrow  *  Left  one half screen width (or N positions).
  ESC-]  ESC-RArrow *  Right like ESC-) but stop at longest line.
  ESC-}  ^RightArrow   Right to last column displayed.
  ESC-{  ^LeftArrow    Left  to first column.
  F                    Forward forever; like "tail -f".
  ESC-F                Like F but stop when search pattern is found.
  ESC-f                Like F but ring the bell when search pattern is found.
  r  ^R  ^L            Repaint screen.
  R                    Repaint screen, discarding buffered input.
        ---------------------------------------------------
        Default "window" is the screen height.
        Default "half-window" is half of the screen height.
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                          SEARCHING

  /pattern          *  Search forward for (N-th) matching line.
  ?pattern          *  Search backward for (N-th) matching line.
  n                 *  Repeat previous search (for N-th occurrence).
  N                 *  Repeat previous search in reverse direction.
  ESC-n             *  Repeat previous search, spanning files.
  ESC-N             *  Repeat previous search, reverse dir. & spanning files.
  ^O^N  ^On         *  Search forward for (N-th) OSC8 hyperlink.
  ^O^P  ^Op         *  Search backward for (N-th) OSC8 hyperlink.
  ^O^L  ^Ol            Jump to the currently selected OSC8 hyperlink.
  ESC-u                Undo (toggle) search highlighting.
  ESC-U                Clear search highlighting.
  &pattern          *  Display only matching lines.
        ---------------------------------------------------
        Search is case-sensitive unless changed with -i or -I.
        A search pattern may begin with one or more of:
        ^N or !  Search for NON-matching lines.
        ^E or *  Search multiple files (pass thru END OF FILE).
        ^F or @  Start search at FIRST file (for /) or last file (for ?).
        ^K       Highlight matches, but don't move (KEEP position).
        ^R       Don't use REGULAR EXPRESSIONS.
        ^S n     Search for match in n-th parenthesized subpattern.
        ^W       WRAP search if no match found.
        ^L       Enter next character literally into pattern.
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                           JUMPING

  g  <  ESC-<  HOME *  Go to first line in file (or line N).
  G  >  ESC->  END  *  Go to last line in file (or line N).
  p  %              *  Go to beginning of file (or N percent into file).
  t                 *  Go to the (N-th) next tag.
  T                 *  Go to the (N-th) previous tag.
  {  (  [           *  Find close bracket } ) ].
  }  )  ]           *  Find open bracket { ( [.
  ESC-^F <c1> <c2>  *  Find close bracket <c2>.
  ESC-^B <c1> <c2>  *  Find open bracket <c1>.
        ---------------------------------------------------
        Each "find close bracket" command goes forward to the close bracket
          matching the (N-th) open bracket in the top line.
        Each "find open bracket" command goes backward to the open bracket
          matching the (N-th) close bracket in the bottom line.

  m<letter>         *  Mark the top line (or line N) with <letter>.
  M<letter>         *  Mark the bottom line (or line N) with <letter>.
  '<letter>         *  Go to a previously marked position (put on position N).
  ''                *  Go to the previous position.
  ^X^X              *  Same as '.
  ESC-m<letter>        Clear a mark.
        ---------------------------------------------------
        A mark is any upper-case or lower-case letter.
        Certain marks are predefined:
             ^  means  beginning of the file
             $  means  end of the file
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                        CHANGING FILES

  :e [file]            Examine a new file.
  ^X^V                 Same as :e.
  :n                *  Examine the (N-th) next file from the command line.
  :p                *  Examine the (N-th) previous file from the command line.
  :x                *  Examine the first (or N-th) file from the command line.
  ^O^O                 Open the currently selected OSC8 hyperlink.
  :d                   Delete the current file from the command line list.
  =  ^G  :f            Print current file name.
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                    MISCELLANEOUS COMMANDS

  -<flag>              Toggle a command line option [see OPTIONS below].
  --<name>             Toggle a command line option, by name.
  _<flag>              Display the setting of a command line option.
  __<name>             Display the setting of an option, by name.
  +cmd                 Execute the less cmd each time a new file is examined.

  !command             Execute the shell command with $SHELL.
  #command             Execute the shell command, expanded like a prompt.
  |Xcommand            Pipe file between current pos & mark X to shell command.
  ||XYcommand          Pipe file between mark X and mark Y to shell command.
  s file               Save input to a file.
  v                    Edit the current file with $VISUAL or $EDITOR.
  V                    Print version number of "less".
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                           OPTIONS

        Most options may be changed either on the command line,
        or from within less by using the - or -- command.
        Options may be given in one of two forms: either a single
        character preceded by a -, or a name preceded by --.

  -?  ........  --help
                  Display help (from command line).
  -a  ........  --search-skip-screen
                  Search skips current screen.
  -A  ........  --SEARCH-SKIP-SCREEN
                  Search starts just after target line.
  -b [N]  ....  --buffers=[N]
                  Number of buffers.
  -B  ........  --auto-buffers
                  Don't automatically allocate buffers for pipes.
  -c  ........  --clear-screen
                  Repaint by clearing rather than scrolling.
  -d  ........  --dumb
                  Dumb terminal.
  -D xcolor  .  --color=xcolor
                  Set screen colors.
  -e  -E  ....  --quit-at-eof  --QUIT-AT-EOF
                  Quit at end of file.
  -f  ........  --force
                  Force open non-regular files.
  -F  ........  --quit-if-one-screen
                  Quit if entire file fits on first screen.
  -g  ........  --hilite-search
                  Highlight only last match for searches.
  -G  ........  --HILITE-SEARCH
                  Don't highlight any matches for searches.
  -h [N]  ....  --max-back-scroll=[N]
                  Backward scroll limit.
  -i  ........  --ignore-case
                  Ignore case in searches that do not contain uppercase.
  -I  ........  --IGNORE-CASE
                  Ignore case in all searches.
  -j [N]  ....  --jump-target=[N]
                  Screen position of target lines.
  -J  ........  --status-column
                  Display a status column at left edge of screen.
  -K  ........  --quit-on-intr
                  Exit less in response to ctrl-C.
  -L  ........  --no-lessopen
                  Ignore the LESSOPEN environment variable.
  -m  -M  ....  --long-prompt  --LONG-PROMPT
                  Set prompt style.
  -n .........  --line-numbers
                  Suppress line numbers in prompts and messages.
  -N .........  --LINE-NUMBERS
                  Display line number at start of each line.
  -o [file] ..  --log-file=[file]
                  Copy to log file (standard input only).
  -O [file] ..  --LOG-FILE=[file]
                  Copy to log file (unconditionally overwrite).
  -p pattern .  --pattern=[pattern]
                  Start at pattern (from command line).
  -P [prompt]   --prompt=[prompt]
                  Define new prompt.
  -q  -Q  ....  --quiet  --QUIET  --silent --SILENT
                  Quiet the terminal bell.
  -r  -R  ....  --raw-control-chars  --RAW-CONTROL-CHARS
                  Output "raw" control characters.
  -s  ........  --squeeze-blank-lines
                  Squeeze multiple blank lines.
  -S  ........  --chop-long-lines
                  Chop (truncate) long lines rather than wrapping.
  -t tag  ....  --tag=[tag]
                  Find a tag.
  -T [tagsfile] --tag-file=[tagsfile]
                  Use an alternate tags file.
  -u  -U  ....  --underline-special  --UNDERLINE-SPECIAL
                  Change handling of backspaces, tabs and carriage returns.
  -V  ........  --version
                  Display the version number of "less".
  -w  ........  --hilite-unread
                  Highlight first new line after full screen movement.
  -W  ........  --HILITE-UNREAD
                  Highlight first new line after any movement.
  -x [N[,...]]  --tabs=[N[,...]]
                  Set tab stops.
  -X  ........  --no-init
                  Don't use termcap init/deinit strings.
  -y [N]  ....  --max-forw-scroll=[N]
                  Forward scroll limit.
  -z [N]  ....  --window=[N]
                  Set size of window.
  -" [c[c]]  .  --quotes=[c[c]]
                  Set shell quote characters.
  -~  ........  --tilde
                  Don't display tildes after end of file.
  -# [N]  ....  --shift=[N]
                  Set horizontal scroll amount (0 = one half screen width).

                --autosave=[m/!*]
                  Actions which cause the history file to be saved.
                --emouse=[vscroll,vdrag,hscroll,hdrag,lclick,rclick]
                  Enable mouse features.
                --end-prompt=[string]
                  String to be printed after erasing the prompt.
                --exit-follow-on-close
                  Exit F command on a pipe when writer closes pipe.
                --file-size
                  Automatically determine the size of the input file.
                --follow-name
                  The F command changes files if the input file is renamed.
                --form-feed
                  Stop scrolling when a form feed character is reached.
                --header=[L[,C[,N]]]
                  Use L lines (starting at line N) and C columns as headers.
                --hilite-target
                  Highlight the target line.
                --incsearch
                  Search file as each pattern character is typed in.
                --intr=[C]
                  Use C instead of ^X to interrupt a read.
                --lesskey-context=text
                  Use lesskey source file contents.
                --lesskey-src=file
                  Use a lesskey source file.
                --line-num-width=[N]
                  Set the width of the -N line number field to N characters.
                --match-shift=[N]
                  Show at least N characters to the left of a search match.
                --modelines=[N]
                  Read N lines from the input file and look for vim modelines.
                --mouse
                  Enable mouse clicking and vertical scrolling.
                --no-edit-warn
                  Don't warn when using v command on a file opened via LESSOPEN.
                --no-keypad
                  Don't send termcap keypad init/deinit strings.
                --no-histdups
                  Remove duplicates from command history.
                --no-number-headers
                  Don't give line numbers to header lines.
                --no-paste
                  Ignore pasted input.
                --no-search-header-lines
                  Searches do not include header lines.
                --no-search-header-columns
                  Searches do not include header columns.
                --no-search-headers
                  Searches do not include header lines or columns.
                --no-vbell
                  Disable the terminal's visual bell.
                --redraw-on-quit
                  Redraw final screen when quitting.
                --rscroll=[C]
                  Set the character used to mark truncated lines.
                --save-marks
                  Retain marks across invocations of less.
                --search-options=[EFKNRW-]
                  Set default options for every search.
                --show-preproc-errors
                  Display a message if preprocessor exits with an error status.
                --past-eof
                  Scrolling commands continue past end of file.
                --proc-backspace
                  Process backspaces for bold/underline.
                --PROC-BACKSPACE
                  Treat backspaces as control characters.
                --proc-return
                  Delete carriage returns before newline.
                --PROC-RETURN
                  Treat carriage returns as control characters.
                --proc-tab
                  Expand tabs to spaces.
                --PROC-TAB
                  Treat tabs as control characters.
                --status-col-width=[N]
                  Set the width of the -J status column to N characters.
                --status-line
                  Highlight or color the entire line containing a mark.
                --time-file-size=[N]
                  Don't take more than N milliseconds for --file-size.
                --use-backslash
                  Subsequent options use backslash as escape char.
                --use-color
                  Enables colored text.
                --wheel-lines=[N]
                  Each click of the mouse wheel moves N lines.
                --wordwrap
                  Wrap lines at spaces.


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                          LINE EDITING

        These keys can be used to edit text being entered
        on the "command line" at the bottom of the screen.

 RightArrow ..................... ESC-l ... Move cursor right one character.
 LeftArrow ...................... ESC-h ... Move cursor left one character.
 ctrl-RightArrow  ESC-RightArrow  ESC-w ... Move cursor right one word.
 ctrl-LeftArrow   ESC-LeftArrow   ESC-b ... Move cursor left one word.
 HOME ........................... ESC-0 ... Move cursor to start of line.
 END ............................ ESC-$ ... Move cursor to end of line.
 BACKSPACE ................................ Delete char to left of cursor.
 DELETE ......................... ESC-x ... Delete char under cursor.
 ctrl-BACKSPACE   ESC-BACKSPACE ........... Delete word to left of cursor.
 ctrl-DELETE .... ESC-DELETE .... ESC-X ... Delete word under cursor.
 ctrl-U ......... ESC (MS-DOS only) ....... Delete entire line.
 INSERT ......................... ESC-i ... Toggle insert/overwrite mode.
 UpArrow ........................ ESC-k ... Retrieve previous command line.
 DownArrow ...................... ESC-j ... Retrieve next command line.
 TAB ...................................... Complete filename & cycle.
 SHIFT-TAB ...................... ESC-TAB   Complete filename & reverse cycle.
 ctrl-L ................................... Complete filename, list all.