SED(1)                           User Commands                           SED(1)

NAME
       sed - stream editor for filtering and transforming text

SYNOPSIS
       sed [‐V] [‐‐version] [‐‐help] [‐n] [‐‐quiet] [‐‐silent]
           [‐l N] [‐‐line‐length=N] [‐u] [‐‐unbuffered]
           [‐E] [‐r] [‐‐regexp‐extended]
           [‐e script] [‐‐expression=script]
           [‐f script‐file] [‐‐file=script‐file]
           [script‐if‐no‐other‐script]
           [file...]

DESCRIPTION
       Sed  is  a stream editor.  A stream editor is used to perform basic text
       transformations on an input stream (a file or input  from  a  pipeline).
       While  in  some  ways  similar to an editor which permits scripted edits
       (such as ed), sed works by making only one pass over the  input(s),  and
       is  consequently more efficient.  But it is sed’s ability to filter text
       in a pipeline which particularly distinguishes it from  other  types  of
       editors.

       -n, --quiet, --silent

              suppress automatic printing of pattern space

       --debug

              annotate program execution

       -e script, --expression=script

              add the script to the commands to be executed

       -f script-file, --file=script-file

              add the contents of script-file to the commands to be executed

       --follow-symlinks

              follow symlinks when processing in place

       -i[SUFFIX], --in-place[=SUFFIX]

              edit files in place (makes backup if SUFFIX supplied)

       -l N, --line-length=N

              specify the desired line-wrap length for the ‘l’ command

       --posix

              disable all GNU extensions.

       -E, -r, --regexp-extended

              use  extended  regular expressions in the script (for portability
              use POSIX -E).

       -s, --separate

              consider files as separate rather than as  a  single,  continuous
              long stream.

       --sandbox

              operate in sandbox mode (disable e/r/w commands).

       -u, --unbuffered

              load  minimal  amounts of data from the input files and flush the
              output buffers more often

       -z, --null-data

              separate lines by NUL characters

       --help
              display this help and exit

       --version
              output version information and exit

       If no -e, --expression, -f, or --file option is given,  then  the  first
       non-option  argument  is  taken as the sed script to interpret.  All re‐
       maining arguments are names of input files; if no input files are speci‐
       fied, then the standard input is read.

       GNU sed home page:  <https://www.gnu.org/software/sed/>.   General  help
       using  GNU software: <https://www.gnu.org/gethelp/>.  E-mail bug reports
       to: <bug-sed@gnu.org>.

       Packaged by Debian Copyright © 2022 Free Software Foundation, Inc.   Li‐
       cense   GPLv3+:   GNU   GPL  version  3  or  later  <https://gnu.org/li‐
       censes/gpl.html>.  This is free software: you are free to change and re‐
       distribute it.  There is NO WARRANTY, to the extent permitted by law.

COMMAND SYNOPSIS
       This is just a brief synopsis of sed commands to serve as a reminder  to
       those  who  already  know  sed; other documentation (such as the texinfo
       document) must be consulted for fuller descriptions.

   Zero‐address ‘‘commands’’
       : label
              Label for b and t commands.

       #comment
              The comment extends until the next newline (or the end  of  a  -e
              script fragment).

       }      The closing bracket of a { } block.

   Zero‐ or One‐ address commands
       =      Print the current line number.

       a \

       text   Append  text, which has each embedded newline preceded by a back‐
              slash.

       i \

       text   Insert text, which has each embedded newline preceded by a  back‐