7.13 The replace String-Replacement Utility

7.13 The replace String-Replacement Utility

The replace utility program changes strings in place in files or on the standard input. It uses a finite state machine to match longer strings first. It can be used to swap strings. For example, the following command swaps a and b in the given files, file1 and file2 :

 shell>  replace a b b a -- file1 file2  ... 

Use the -- option to indicate where the string-replacement list ends and the filenames begin.

Any file named on the command line is modified in place, so you may want to make a copy of the original before converting it.

If no files are named on the command line, replace reads the standard input and writes to the standard output. In this case, no -- option is needed.

The replace program is used by msql2mysql .

replace supports the following options:

• -? , -I

  Display a help message and exit.

• -# debug_options

  Write a debugging log. The debug_options string often is 'd:t:o, file_name ' .

• -s

  Silent mode. Print out less information what the program does.

• -v

  Verbose mode. Print out more information what the program does.

• -V

  Display version information and exit.