ed - line-oriented text editor

       Copyright © 1994 Andrew L. Moore.
       Copyright   ©   2025   Antonio   Diaz   Diaz.    License   GPLv2+:   GNU   GPL   version   2   or   later
       <http://gnu.org/licenses/gpl.html>
       This  is  free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent
       permitted by law.

       GNU  ed  is  a  line-oriented text editor. It is used to create, display, modify and otherwise manipulate
       text files, both interactively and via shell scripts. A restricted version of  ed,  red,  can  only  edit
       files in the current directory and cannot execute shell commands. Ed is the 'standard' text editor in the
       sense  that it is the original editor for Unix, and thus widely available. For most purposes, however, it
       is superseded by full-screen editors such as GNU Emacs or GNU Moe.

       The file name may be preceded by '+line', '+/RE', or '+?RE' to set the current line to  the  line  number
       specified or to the first or last line matching the regular expression 'RE'.

       ed - line-oriented text editor

-h, --help
              display this help and exit

       -V, --version
              output version information and exit

       -E, --extended-regexp
              use extended regular expressions

       -G, --traditional
              run in compatibility mode

       -l, --loose-exit-status
              exit with 0 status even if a command fails

       -p, --prompt=STRING
              use STRING as an interactive prompt

       -q, --quiet, --silent
              suppress diagnostics written to stderr

       -r, --restricted
              run in restricted mode

       -s, --script
              suppress byte counts and '!' prompt

       -v, --verbose
              be verbose; equivalent to the 'H' command

       --strip-trailing-cr
              strip carriage returns at end of text lines

       --unsafe-names
              allow control characters 1-31 in file names

       Start edit by reading in 'file' if given.  If 'file' begins with a '!', read output of shell command.

       Exit  status:  0  for  a  normal exit, 1 for environmental problems (invalid command-line options, memory
       exhausted, command failed, etc), 2 for problems with the input file (file not found, buffer modified, I/O
       errors), 3 for an internal consistency error (e.g., bug) which caused ed to panic.

       Report bugs to bug-ed@gnu.org
       Ed home page: http://www.gnu.org/software/ed/ed.html
       General help using GNU software: http://www.gnu.org/gethelp

       The full documentation for ed is maintained as a Texinfo  manual.   If  the  info  and  ed  programs  are
       properly installed at your site, the command

              infoed

       should give you access to the complete manual.

GNU ed 1.21                                       January 2025                                             ED(1)

ed [options] [[+line] file]