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Top Forums Shell Programming and Scripting Compare file dates before copy Post 303021425 by Neo on Thursday 9th of August 2018 08:31:17 AM
Old 08-09-2018
Normally, when we make backups, we put the date of the backup in the name of the file.

So, if you do this using a standard UNIX time, it is very easy to parse than info out of the filename and compare.

Example:

Code:
mybackupfile.1533817852.tar.gz

 

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MSGMERGE(1)								GNU							       MSGMERGE(1)

NAME
msgmerge - merge message catalog and template SYNOPSIS
msgmerge [OPTION] def.po ref.pot DESCRIPTION
Merges two Uniforum style .po files together. The def.po file is an existing PO file with translations which will be taken over to the newly created file as long as they still match; comments will be preserved, but extracted comments and file positions will be discarded. The ref.pot file is the last created PO file with up-to-date source references but old translations, or a PO Template file (generally cre- ated by xgettext); any translations or comments in the file will be discarded, however dot comments and file positions will be preserved. Where an exact match cannot be found, fuzzy matching is used to produce better results. Mandatory arguments to long options are mandatory for short options too. Input file location: def.po translations referring to old sources ref.pot references to new sources -D, --directory=DIRECTORY add DIRECTORY to list for input files search -C, --compendium=FILE additional library of message translations, may be specified more than once Operation mode: -U, --update update def.po, do nothing if def.po already up to date Output file location: -o, --output-file=FILE write output to specified file The results are written to standard output if no output file is specified or if it is -. Output file location in update mode: The result is written back to def.po. --backup=CONTROL make a backup of def.po --suffix=SUFFIX override the usual backup suffix The version control method may be selected via the --backup option or through the VERSION_CONTROL environment variable. Here are the val- ues: none, off never make backups (even if --backup is given) numbered, t make numbered backups existing, nil numbered if numbered backups exist, simple otherwise simple, never always make simple backups The backup suffix is `~', unless set with --suffix or the SIMPLE_BACKUP_SUFFIX environment variable. Operation modifiers: -m, --multi-domain apply ref.pot to each of the domains in def.po Output details: -e, --no-escape do not use C escapes in output (default) -E, --escape use C escapes in output, no extended chars --force-po write PO file even if empty -i, --indent indented output style --no-location suppress '#: filename:line' lines --add-location preserve '#: filename:line' lines (default) --strict strict Uniforum output style -w, --width=NUMBER set output page width --no-wrap do not break long message lines, longer than the output page width, into several lines -s, --sort-output generate sorted output -F, --sort-by-file sort output by file location Informative output: -h, --help display this help and exit -V, --version output version information and exit -v, --verbose increase verbosity level -q, --quiet, --silent suppress progress indicators AUTHOR
Written by Peter Miller. REPORTING BUGS
Report bugs to <bug-gnu-gettext@gnu.org>. COPYRIGHT
Copyright (C) 1995-1998, 2000-2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
The full documentation for msgmerge is maintained as a Texinfo manual. If the info and msgmerge programs are properly installed at your site, the command info msgmerge should give you access to the complete manual. GNU gettext 0.11.4 July 2002 MSGMERGE(1)
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