Hi,
I want to specify multiple remote directories but want to transfer them in a single command with one connection with remote server. This avoids entering passwords repeatedly and is also efficient.
e.g.
rsync -vrt --size-only --delete user@host:/home/user1/dir1... (9 Replies)
hai all
I am new to the world of shell scripting
I wanted to extract two columns from multiple files say around 25 files
and i wanted to get the separate outfile for each input file
tired using the following command to extract two columns from 25 files
awk... (2 Replies)
Hi,
I am trying to write a script to cleanup files in a log directory ..
cd log
find Datk** -mtime +7 -exec rm -f {} \; 2> /dev/null
Have used the above to clean up files in log directory more then 7 days older.
The file can be something like ( auto-generate by some processes and... (2 Replies)
Hi,
I am trying to process 2 files simultaneously using awk satisfying following condition,
Both files contain 3 columns. It should take entry from column 1 from first file, look for that entry in file 2 and if found, add column 2 and column 3 from both files and output to third file. For e.g.... (4 Replies)
I have a huge file semicolon( ; ) separated records are Pipe(|) delimited.
e.g
abc;def;ghi|jkl;mno;pqr|123;456;789
I need to replace the 50th field(semicolon separated) of each record with 9006. The 50th field can have no value e.g. ;;
Can someone help me with the appropriate command. (3 Replies)
I have a single record large file, semicolon ';' and pipe '|' separated. I am doing a vi on the file. It is throwing an error "File to long"
I need to actually remove the last | symbol from this file.
sed -e 's/\|*$//' filename
is working fine for small files. But not working on this big... (13 Replies)
Hi All,
I am running into an issue. I have a very big file. Wants to split it in smaller chunks. This file has multiple header/ trailers. Also, between each header/trailer there are records. Number of records in each header trailer combination can vary. Also, headers can start with... (3 Replies)
Hi All
I am having one awk and sed requirement for the below problem.
I tried multiple options in my sed or awk and right output is not coming out.
Problem Description
###############################################################
I am having a big file say file having repeated... (4 Replies)
Im having an issue when trying to replace the first column with a new set of values in multiple files. The results from the following code only replaces the files with the last set of values in val.txt. I want to replace all the files with all the values.
for date in {1..31}
do
for val in... (1 Reply)
Discussion started by: ncwxpanther
1 Replies
LEARN ABOUT CENTOS
task::weaken
Task::Weaken(3) User Contributed Perl Documentation Task::Weaken(3)NAME
Task::Weaken - Ensure that a platform has weaken support
DESCRIPTION
One recurring problem in modules that use Scalar::Util's "weaken" function is that it is not present in the pure-perl variant.
While this isn't necesarily always a problem in a straight CPAN-based Perl environment, some operating system distributions only include
the pure-Perl versions, don't include the XS version, and so weaken is then "missing" from the platform, despite passing a dependency on
Scalar::Util successfully.
Most notably this is RedHat Linux at time of writing, but other come and go and do the same thing, hence "recurring problem".
The normal solution is to manually write tests in each distribution to ensure that "weaken" is available.
This restores the functionality testing to a dependency you do once in your Makefile.PL, rather than something you have to write extra
tests for each time you write a module.
It should also help make the package auto-generators for the various operating systems play more nicely, because it introduces a dependency
that they have to have a proper weaken in order to work.
How this Task works
Part of the problem seems to stem from the fact that some distributions continue to include modules even if they fail some of their tests.
To get around that for this module, it will do a few dirty tricks.
If Scalar::Util is not available at all, it will issue a normal dependency on the module. However, if Scalar::Util is relatively new ( it
is >= 1.19 ) and the module does not have weaken, the install will bail out altogether with a long error encouraging the user to seek
support from their vendor (this problem happens most often in vendor-packaged Perl versions).
This distribution also contains tests to ensure that weaken is available using more normal methods.
So if your module uses "weaken", you can just add the following to your Module::Install-based Makefile.PL (or equivalent).
requires 'Task::Weaken' => 0;
SUPPORT
Bugs should be always be reported via the CPAN bug tracker at
<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Task-Weaken>
For other issues,contact the author.
AUTHOR
Adam Kennedy <adamk@cpan.org>
SEE ALSO
Task, Scalar::Util, <http://ali.as/>
COPYRIGHT
Copyright 2006 - 2011 Adam Kennedy.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
The full text of the license can be found in the LICENSE file included with this module.
perl v5.16.3 2011-03-08 Task::Weaken(3)