msgcat [OPTION] [INPUTFILE]...
Concatenates and merges the specified PO files. Find messages which are common to two or more of the specified PO files. By using the --more-than option, greater commonality may be requested before messages are printed. Conversely, the --less-than option may be used to specify less commonality before messages are printed (i.e. --less-than=2 will only print the unique messages). Translations, comments, extracted comments, and file positions will be cumulated, except that if --use-first is specified, they will be taken from the first PO file to define them.
Mandatory arguments to long options are mandatory for short options too.
If input file is -, standard input is read.
The results are written to standard output if no output file is specified or if it is -.
Written by Bruno Haible.
Report bugs to <firstname.lastname@example.org>.
Copyright © 2001-2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
The full documentation for msgcat is maintained as a Texinfo manual. If the info and msgcat programs are properly installed at your site, the command
should give you access to the complete manual.