bionic (3) inplace.3am.gz

NAME

       inplace - emulate sed/perl/ruby in-place editing

SYNOPSIS

       gawk -i inplace ...

DESCRIPTION

       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  concatenates  that
       suffix onto the original filename and uses the result as a filename for renaming the original.

       One  can disable inplace editing selectively by placing inplace=0 on the command line prior to files that
       should be processed normally.  One can reenable inplace editing by placing inplace=1 prior to files  that
       should be subject to inplace editing.

BUGS

       While  the  extension does attempt to preserve ownership and permissions, it makes no attempt to copy the
       ACLs from the original file.

       If the program dies prematurely, as might happen if an unhandled signal is received, a temporary file may
       be left behind.

EXAMPLE

       gawk -i inplace 'script' files ...
       gawk -i inplace -f scriptfile files ...

SEE ALSO

       GAWK:  Effective  AWK  Programming,  filefuncs(3am),  fnmatch(3am), fork(3am), ordchr(3am), readdir(3am),
       readfile(3am), revoutput(3am), rwarray(3am).

AUTHOR

       Andrew Schorr, schorr@telemetry-investments.com.

COPYING PERMISSIONS

       Copyright © 2012, 2013, 2015 Free Software Foundation, Inc.

       Permission is granted to make and distribute verbatim copies of this manual page provided  the  copyright
       notice and this permission notice are preserved on all copies.

       Permission  is  granted to copy and distribute modified versions of this manual page under the conditions
       for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a
       permission notice identical to this one.

       Permission  is  granted  to  copy  and distribute translations of this manual page into another language,
       under the above conditions for modified versions, except that this permission notice may be stated  in  a
       translation approved by the Foundation.