06-26-2009
Use the Perl debugger
By far the easiest way to find out why Perl code isn't working the way you think it should is to use the Perl debugger.
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1. Shell Programming and Scripting
HI,
I want to split a text after certain fix character count in text.
For eg: My file is containing text like:
AURBJR,AURCID,AURVID,CHANDV,DAMNEW,DHMMAN,GANGAN,GARKHE,GOREGA,JEJKHA,JEJSHI,JINTUR,JMKKUS,JUNAWA,KALKAL,KHOJEW,KUNJIR,MAGARP,MAHAD,
in this i want to print text after each... (5 Replies)
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2. Solaris
Hi all.
I am trying to add font to use however sdtfontadm fail so many times regardless of using GUI or CDE. It look likes a very regular error.
It release "Segamentation Fault (core dump) ./sdtfontadm "
The serious of this problem is its hard to find a way without reinstalling the... (3 Replies)
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3. Shell Programming and Scripting
Hi
I have a big verilog file with multiple modules. Each module begin with the code word 'module <module-name>(ports,...)'
and end with the
'endmodule' keyword.
Could you please suggest the best way to split each of these modules into multiple files?
Thank you for the help.
Example of... (7 Replies)
Discussion started by: return_user
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4. Shell Programming and Scripting
Hi,
I have file: data.log.1
### s1
main.build.3495
main.build.199
main.build.3408
###s2
main.build.3495
main.build.3408
main.build.199
I want to read this file and store in two arrays in Perl.
I have following command, which is working fine on command prompt.
perl -n -e... (1 Reply)
Discussion started by: ashvini
1 Replies
5. Shell Programming and Scripting
Hi all
I have written Perl script to swap the strings in the second a third column from a text file.
My input file format is :
the|empty|the|det lake|empty|lake|conj_and was|empty|was|auxpass drained|empty|drained|conj_and birds|empty|bird|s|nn
The expected output file format is... (11 Replies)
Discussion started by: my_Perl
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6. Shell Programming and Scripting
How do I split file into pieces with PERL?
IE
file.txt
head
1
2
3
4
end
head
5
6
7
8
9
end
n so on (7 Replies)
Discussion started by: 3junior
7 Replies
7. Shell Programming and Scripting
I had a text file(comma seperated values) which contains as below
196237,ram,25-May-06,ram.kiran@xyz.com,204183,Pavan,4-Jun-07,Pavan.Desai@xyz.com,237107,ram Chandra,15-Mar-10,ram.krishna@xyz.com ... (3 Replies)
Discussion started by: giridhar276
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8. UNIX for Dummies Questions & Answers
Hi all,
I have a csv file that appears as follows:
,2013/03/26,2012/12/26,4,1,"2017/09/26,5.75%","2017/09/26,1,2018/09/26,1,2019/09/26,1,2020/09/26,1,2021/09/26,1",,,2012/12/26,now when i use the split function like this:
my @f = split/,/; the split function will split the data that is... (2 Replies)
Discussion started by: WongSifu
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9. Shell Programming and Scripting
I do have an xml sheet as below where I need the perl script to filter only the hyperlink tags.
<cols><col min="1" max="1" width="30.5703125" customWidth="1"/><col min="2" max="2" width="7.140625" bestFit="1" customWidth="1"/>
<col min="3" max="3" width="32.28515625" bestFit="1"... (3 Replies)
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10. Shell Programming and Scripting
Hi,
I would like to split single fine into two array ..
Example: file.txt
--------------Installation --------------------
#GXTOOL=GxTools-20130501.tar.gz
GCSS=GExpLinux-BE-3700.0.12.37.tar.gz
TOP=TOPLinux-BE-3700.0.6.21.tar.gz
GHDER=GHDERLinux-BE-3700.0.6.20.tar.gz... (2 Replies)
Discussion started by: Mani_apr08
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LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.16.3 2010-06-11 SHELL-QUOTE(1)