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Full Discussion: Need help in Shell scripting
Top Forums Shell Programming and Scripting Need help in Shell scripting Post 302513417 by ctsgnb on Wednesday 13th of April 2011 08:17:49 AM
Old 04-13-2011
in Korn shell (#!/bin/ksh) , you can use if condition with the operators

-otolder than
-ntnewer than
on files

Example :

Code:
# touch titi
# touch toto
# stat titi
  File: `titi'
  Size: 0               Blocks: 0          IO Block: 8192   regular empty file
Device: 154003dh/22282301d      Inode: 6517        Links: 1
Access: (0644/-rw-r--r--)  Uid: ( 1000/   admin)   Gid: ( 1000/   admin)
Access: 2011-04-13 14:21:41.654862000 +0200
Modify: 2011-04-13 14:21:41.654862000 +0200
Change: 2011-04-13 14:21:41.654868000 +0200
# stat toto
  File: `toto'
  Size: 0               Blocks: 0          IO Block: 8192   regular empty file
Device: 154003dh/22282301d      Inode: 6520        Links: 1
Access: (0644/-rw-r--r--)  Uid: ( 1000/   admin)   Gid: ( 1000/   admin)
Access: 2011-04-13 14:21:48.006375000 +0200
Modify: 2011-04-13 14:21:48.006375000 +0200
Change: 2011-04-13 14:21:48.006381000 +0200
# [[ titi -nt toto ]] && echo "titi is newer than toto" || echo "toto is newer than titi"
toto is newer than titi
# touch titi
# [[ titi -nt toto ]] && echo "titi is newer than toto" || echo "toto is newer than titi"
titi is newer than toto
#


Last edited by ctsgnb; 04-13-2011 at 09:25 AM..
This User Gave Thanks to ctsgnb For This Post:
 

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DIETTESTTOOL(1) 														   DIETTESTTOOL(1)

NAME
DIETTestTool - Example of a tool for DIET using the LogCentral NAME
DIETTestTool - Example of a tool that connects to the LogCentral without any filter and that display all the messages published. It is used as an example for the DIET program. All received published messages are also stored in a log file. SYNOPSYS
DIETTestTool [options] ... DESCRIPTION
DIETTestTool connects to the LogCentral and get the messages (by default all, a file containing filters may be passed as an argument). The tool both display and save the messages in a log file. This log file may be given or will be created with a fix name "DIETLogTool.log". Before starting the LogCentral, you must: o launch a CORBA Naming Service. o launch log forwarders if needed o launch LogCentral service o Launch the DIETTestTool o Use a component to publish messages OPTIONS
o The first argument is the destination output file that will contain the displayed logs. o The second one is a filter to use in the tool [Remark: There is no option letter, the order is fixed] EXAMPLE
o Launching the LogCentral LogCentral -config ./LogCentral.cfg o Launching the tool DIETTestTool o Launching the tool to store the logs in the toto.log file DIETTestTool toto.log o Launching the tool to store the logs in the toto.log file with the filter in the filter.txt file DIETTestTool toto.log filter.txt RATIONALE
The LogTool uses CORBA as its communication layer. While it's a flexible and robust middleware, its deployement on heterogeneous networks still is delicate and may require using ssh tunnels. LICENSE AND COPYRIGHT
Copyright (C)2011, GRAAL, INRIA Rhone-Alpes, 46 allee d'Italie, 69364 Lyon cedex 07, France all right reserved <diet-dev@ens-lyon.fr> License This program is free software: you can redistribute it and/or mod- ify it under the terms of the GNU General Public License as pub- lished by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Pub- lic Li- cense for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. AUTHORS
GRAAL INRIA Rhone-Alpes 46 allee d'Italie 69364 Lyon cedex 07, FRANCE Email: <diet-dev@ens-lyon.fr> WWW: http://graal.ens-lyon.fr/DIET SEE ALSO
omniNames(1), logForwarder(1), LogCentral(1), testComponent(1) BUGS
AUTHOR
haikel.guemar@sysfera.com, kevin.coulomb@sysfera.com License: GPLv3 COPYRIGHT
DIET developers 0.1 2011-05-16 DIETTESTTOOL(1)
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