NAME

       fai-sed - call sed on a file but check for changes before writing

SYNOPSIS

       fai-sed CMD FILE

DESCRIPTION

       Execute  a sed script - here called CMD - on FILE but do not overwrite the file if nothing
       changes. If $target is defined, use it as prefix for the path to FILE.

       The exit status 0 indicates success. A nonzero value indicates failure.

OPTIONS

       -E     If fai-sed changed the file exit with 9 instead of 0.

       -n     Dry run. Print if file would have changed, but do not change it.

EXAMPLES

       $ fai-sed 's/foo/bar/g' /etc/motd

       Replace foo with bar in file /etc/motd.

       $ fai-sed 's/123/ABC/g; /XXX/d' /etc/motd

       Replace 123 with ABC and delete all lines which contain the string XXX.

SEE ALSO

       This program is part of FAI (Fully Automatic Installation).  See the FAI manual  for  more
       information on how to use fai-monitor.  The FAI homepage is https://fai-project.org.

AUTHOR

       Thomas Lange <lange@cs.uni-koeln.de>