04-21-2010
thanks thillai, it worked and solved my problem
thanks again..
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1. Shell Programming and Scripting
Just want to learn how these are read into array but I don't seem to get it right what do I go wrong?
Below is the sample
Thanks
input
1 2 3 4
5 6 7 8
9 1 2 3
4 5 6 7
#!/usr/bin/perl
open (InFILE,"input");
while (<InFILE>) {
@ar = split ; (5 Replies)
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2. Shell Programming and Scripting
Hi All,
I am having trouble through, I am reading the input from tab delimited file containing several records,
e.g.
line1 field1 field2 field3 so on..
line2 field1 field2 field3 so on..
..
..
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3. Shell Programming and Scripting
Hi,
I have a sample data file that contains name-value pairs in it.
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name1=value1
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name3=value3
...
...
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4. Shell Programming and Scripting
I am trying to read in a 2 column data file into Perl Hash array index. Here is my code.
#!/usr/bin/perl -w
use strict;
use warnings;
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my @line = ();
my $index = 0;
my %ind_file = ();
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chomp($_);
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5. Shell Programming and Scripting
Hi,
i need a perl script which reads the file, content is given below. and output in new file.
TARGET DRIVE IO1 IO2 IO3 IO4 IO5
------------ --------- --------- --------- --------- ---------
0a.1.8 266 236 ... (3 Replies)
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6. Shell Programming and Scripting
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n=${#array}
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7. Shell Programming and Scripting
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9. Shell Programming and Scripting
Hi team,
# PERL
I have Dumper variable in perl and containing the below data and trying to fetch value and name from the reference variable.
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LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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 v5.8.4 2005-05-03 SHELL-QUOTE(1p)