8.17. replace — A String-Replacement Utility
The replace utility program changes strings
in place in files or on the standard input.
Invoke replace in one of the following
replace from to [from to] ... -- file [file] ...
replace from to [from to] ... < input
from represents a string to look
to represents its
replacement. There can be one or more pairs of strings.
-- option to indicate where the
string-replacement list ends and the filenames begin. In this
case, any file named on the command line is modified in place,
so you may want to make a copy of the original before
replace prints a
message indicating which of the input files it actually
-- option is not given
replace reads the standard input and writes
to the standard output.
replace uses a finite state machine to
match longer strings first. It can be used to swap strings.
For example, the following command swaps
b in the given files,
replace a b b a -- file1 file2 ...
The replace program is used by
Section 25.9.1, “msql2mysql — Convert mSQL Programs for Use with MySQL”.
replace supports the following options:
Display a help message and exit.
Write a debugging log. The
string often is
Silent mode. Print less information what the program does.
Verbose mode. Print more information about what the
Display version information and exit.