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Full Discussion: Replace contents of a file
Top Forums Shell Programming and Scripting Replace contents of a file Post 302873521 by Aswex on Tuesday 12th of November 2013 09:56:34 AM
Old 11-12-2013
Hello,

sorry to be confused. I am trying to be as clear as I can :

I am trying the replace numbers by numbers in a log file that looks like :

Code:
dir2:123


I need to avoid to change anything in the log file except the size of the directory.

ex

Code:
du -k /dir1/dir2/

output

Code:
456 /dir/1/dir2/

so a shell command will replace my old size value with the today's one. This must work whatever the directory size is bigger or smaller the last value.

ex :

yesterday :

Code:
cat logfile.log
dir2:123

today

Code:
cat logfile.log
dir2:456

But I dont know how to do that.

Thanks.
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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