NAME

       ainsl - AppendIfNoSuchLine

SYNOPSIS

       ainsl [options] FILE LINE [PATTERN]

DESCRIPTION

       Add  LINE  to  the end of FILE if this file does not contain this line already. If PATTERN is given, then
       the LINE is only appended if PATTERN is not found in the file.

       Since ainsl is written in Perl, you can use Perl's regular expressions in  PATTERN.  If  PATTERN  is  not
       given,  LINE  is used instead for matching a line in FILE. Then LINE may also contain the anchors '^' and
       '$' which are only treated specialy at the beginning or end of the pattern and are used for matching, not
       when adding the line. Additionally, the following characters are escaped in LINE: ( ) +

       The exit code returned by ainsl is 0 on success and non-zero on error.  See the section EXIT CODES.

OPTIONS

       -a     Autocreate file if it does not exist.

       -D     Create debugging output.

       -h     Show help, version and summary of options.

       -n     Print the actions, but do not execute them.

       -Q     Quote all metacharacters in pattern. Uses perl's \Q function.

       -q     Quote * and + metacharacters in pattern.

       -s     Convert white space in LINE or PATTERN to '\s+' regexp for matching.

       -N     Don't prepend '$AINSL_TARGET/' to filename, even if it is set.

       -v     Create verbose output.

NOTES

       If  the variable AINSL_TARGET is defined, its value will become the prefix for the filename. This is used
       in FAI for changing files in /target without specifying /target in the file name.

EXAMPLES

       ainsl -v /etc/fstab '/dev/fd0  /floppy  auto  users,noauto 0 0'

       Append the entry for the floppy device to /etc/fstab, if this line isn't already included.

       ainsl -s /etc/exports '/srv/www @linuxhosts(async,rw) backup(async,ro)'

       Add exports entry without exactly matching spaces.

EXIT CODES

       0      Success: Either FILE contains the LINE/PATTERN or LINE was appended to FILE.

       13     Permissions do not allow writing to FILE and LINE/PATTERN was not found in file.

       28     FILE cannot be written because the filesystem has no space and LINE/PATTERN was not found in file.

       30     FILE cannot be written because the filesystem is read-only and LINE/PATTERN was not found in file.

NOTES

       This is a similar function to AppendIfNoSuchLine from cfengine(8).

SEE ALSO

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

AUTHOR

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