gawk -i inplace ...
The inplace extension adds two functions named inplace_begin() and
inplace_end(). These functions are meant to be invoked from the
inplace.awk wrapper which is installed when gawk is.
By default, each named file on the command line is replaced with a new
file of the same name whose contents are the results of running the AWK
program. If the user supplies an AWK variable named INPLACE_SUFFIX in
a BEGIN rule or on the command line, then the inplace extension con-
catenates that suffix onto the original filename and uses the result as
a filename for renaming the original.
gawk -i inplace 'script' files ...
gawk -i inplace -f scriptfile files ...
GAWK: Effective AWK Programming, filefuncs(3am), fnmatch(3am),
fork(3am), ordchr(3am), readdir(3am), readfile(3am), revoutput(3am),
Andrew Schorr, email@example.com.
Copyright (C) 2012, 2013, 2015 Free Software Foundation, Inc.
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Free Software Foundation Apr 08 2015 INPLACE(3am)
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