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Shell Programming and Scripting
gzip files with extension
Post 302439436 by Scott on Thursday 22nd of July 2010 01:54:16 PM
07-22-2010
Quote:
What would gzip * expand to?
Code:
$ echo blah | tee xxxxx.csv > yyyyy $ ll total 16 drwxr-xr-x 4 scott staff 136 22 Jul 19:43 . drwxr-xr-x 43 scott staff 1462 22 Jul 19:41 .. -rw-r--r-- 1 scott staff 5 22 Jul 19:43 xxxxx.csv -rw-r--r-- 1 scott staff 5 22 Jul 19:43 yyyyy $ ls *.csv | gzip * $ ll total 16 drwxr-xr-x 4 scott staff 136 22 Jul 19:43 . drwxr-xr-x 43 scott staff 1462 22 Jul 19:41 .. -rw-r--r-- 1 scott staff 35 22 Jul 19:43 xxxxx.csv.gz -rw-r--r-- 1 scott staff 31 22 Jul 19:43 yyyyy.gz
---------- Post updated at 07:54 PM ---------- Previous update was at 07:39 PM ----------
(the "Are you sure" question was related to whether it worked, not whether it would prompt you for anything. But it neither works nor prompts you, so you were half right
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LEARN ABOUT SUSE
chgrp
CHGRP(1) User Commands CHGRP(1) NAME
chgrp - change group ownership SYNOPSIS
chgrp [OPTION]... GROUP FILE... chgrp [OPTION]... --reference=RFILE FILE... DESCRIPTION
Change the group of each FILE to GROUP. With --reference, change the group of each FILE to that of RFILE. -c, --changes like verbose but report only when a change is made --dereference affect the referent of each symbolic link (this is the default), rather than the symbolic link itself -h, --no-dereference affect each symbolic link instead of any referenced file (useful only on systems that can change the ownership of a symlink) --no-preserve-root do not treat `/' specially (the default) --preserve-root fail to operate recursively on `/' -f, --silent, --quiet suppress most error messages --reference=RFILE use RFILE's group rather than specifying a GROUP value -R, --recursive operate on files and directories recursively -v, --verbose output a diagnostic for every file processed The following options modify how a hierarchy is traversed when the -R option is also specified. If more than one is specified, only the final one takes effect. -H if a command line argument is a symbolic link to a directory, traverse it -L traverse every symbolic link to a directory encountered -P do not traverse any symbolic links (default) --help display this help and exit --version output version information and exit EXAMPLES
chgrp staff /u Change the group of /u to "staff". chgrp -hR staff /u Change the group of /u and subfiles to "staff". AUTHOR
Written by David MacKenzie and Jim Meyering. REPORTING BUGS
Report chgrp bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2009 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. SEE ALSO
The full documentation for chgrp is maintained as a Texinfo manual. If the info and chgrp programs are properly installed at your site, the command info coreutils 'chgrp invocation' should give you access to the complete manual. GNU coreutils 7.1 July 2010 CHGRP(1)