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

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

FAI 5                                                 2020                                            fai-sed(1)

       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.

       $ 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.

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

-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.

       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.

fai-sed CMD FILE