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Top Forums Shell Programming and Scripting sed command to replace slash in date format only Post 302852507 by pchang on Wednesday 11th of September 2013 04:48:59 PM
Old 09-11-2013
sed command to replace slash in date format only

Hello experts.

I haven't been able to find a solution for this using the sed command.

I only want to replace the forward slash with string "FW_SLASH" only if there's a number right after the slash while preserving the original number.

I have a file containing 2 entries:
Original File:

Desired File:

I have tried this code but I'm not able to preserve the original number:
sed 's/\/[0-9]/FWD_SLASH/g'

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File::Policy(3pm)					User Contributed Perl Documentation					 File::Policy(3pm)

File::Policy - Site policy for file I/O functions SYNOPSIS
use File::Policy; use File::Policy qw/check_safe/; # to import a specific subroutine use File::Policy qw/:all/; # to import all subroutines #Checking I/O policy check_safe($filename, 'r'); check_safe($filename, 'w'); #Preferred directory locations $logdir = get_log_dir(); $tmpdir = get_temp_dir(); DESCRIPTION
This defines the policy for file I/O with modules such as File::Slurp::WithinPolicy. The purpose is to allow systems administrators to define locations and restrictions for applications' file I/O and give app developers a policy to follow. Note that the module doesn't ENFORCE the policy - application developers can choose to ignore it (and systems administrators can choose not to install their applica- tions if they do!). You may control which policy gets applied by creating a File::Policy::Config module with an IMPLEMENTATION constant. You may write your own policy as a module within the File::Policy:: namespace. By default (if no File::Policy::Config is present), the File::Policy::Default policy gets applied which doesn't impose any restrictions and provides reasonable default locations for temporary and log files. The motivation behind this module was a standard, flexible approach to allow a site wide file policy to be defined. This will be most use- ful in large environments where a few sysadmins are responsible for code written by many other people. Simply ensuring that submitted code calls check_safe() ensures file access is sane, reducing the amount of effort required to do a security audit. If your code is not security audit'd, or you are the only developer at your site, this might be overkill. However you may consider it good practise regardless and protection against paths in your code getting corrupted accidently or maliciously in the future. There are two major benefits of using this module. One, sites that do implement a policy can more easily integrate your code in a standard way. If you have a file policy at your site, you can apply different policies (via File::Policy::Config) in different environments (pro- duction, integration test, development) and the appropriate policy is automatically applied without having to change your code or configs. FUNCTIONS
check_safe check_safe( FILENAME , MODE ); Checks FILENAME is safe - dies if not. MODE is r (read) or w (write). get_temp_dir $temporary_directory = get_temp_dir(); Returns the path to temporary directory. Note that any return value will have been cleared of a trailing slash. get_log_dir $log_directory = get_log_dir(); Returns the path to log directory. Note that any return value will have been cleared of a trailing slash. DEFINING YOUR OWN POLICY
To implement your own custom policy cp File/Policy/ File/Policy/ and modify YourPolicy accordingly. Then, create File/Policy/ contaning: use constant IMPLEMENTATION => 'YourPolicy'; Now having used File::Policy, calling check_safe in your scripts will enforce your policy (as well as give you access to log and temp paths in locations you recommend). SEE ALSO
File::Policy::Default, Safe VERSION
$Revision: 1.5 $ on $Date: 2005/05/18 15:58:21 $ by $Author: johna $ AUTHOR
John Alden <cpan _at_ bbc _dot_ co _dot_ uk> COPYRIGHT
(c) BBC 2005. This program is free software; you can redistribute it and/or modify it under the GNU GPL. See the file COPYING in this distribution, or perl v5.8.8 2005-06-15 File::Policy(3pm)

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