SYNOPSIS

       chgrep   [-en/w]   [-dhilqrsv]   [-t filename]   OLDPATTERN  NEWPATTERN
       [file...]

DESCRIPTION

       Chgrep searches the input files (or standard  input  if  no  files  are
       named)  for  oldstring  and changes them to newstring. If some file and
       file.lock exist then chgrep leaves both files unchanged. You can  write
       NEWPATTERN  as "NULL" to clear OLDPATTERN, i.e.  "chgrep oldstring NULL
       somefile.c".


       -d     Don't change modification times of altered files.

       -e     Extended-regexp.

       -h     Print the version number of chgrep  to  standard  output.   This
              version  number  should  be  included  in  all  bug reports (see
              below).

       -i     Ignore differences in case at OLDPATTERN.

       -l     Leaves copy of old file unchanged in filename.lock

       -n     Treat <newline> as a regular character.

       -q     Quiet mode (no output at all).

       -r     Read all files under each subdirectory, recursively.

       -s     Simulation mode.

       -t     Use not default file.lock for caching.

       -v     Prints to standard output diagnostic informations.

       -w     Doesn't recognize regexp in OLDPATTERN. This option  accelerates
              the whole process. Incompatible with -e and/or -n.

DIAGNOSTICS

       Normally,  exit  status  is  0  if  no errors were found, and 1 if some
       errors were found. The -v option helps to understand the sense  of  the
       exit status.

BUGS

       Email  bug  reports  to  bartek@bmk.bz.   Be  sure  to include the word
       "chgrep" somewhere in the "Subject:" field.



Project                           2002/04/16                         CHGREP(1)