perl script help


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers perl script help
# 1  
Old 11-01-2010
perl script help

Hello Friends, How can I remove the last two values of this line using perl script?

John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638:9/3/90:45900

The result file should look like this:
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638
# 2  
Old 11-02-2010
my $example1="John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638:9/3/90:45900";


if ($example1 =~ /(.*)(.{2}$)/ )
{
print "$1";
}
else
{
print "Not Matched";
}
# 3  
Old 11-02-2010
fly2matrix: I have a lot of data in the file with the same structure. The file look like the following... The script should remove the last two fields of each line in the file.

info.txt
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638:9/3/90:45900
Brian Jonathan:567-690-5668:98 state way, Newyork, NY 25638:9/3/70:55921
Jim cary:663-600-4660:78 state way, Minneapolis, MN 56892:6/8/80:52589
# 4  
Old 11-02-2010
Try this one : perl -pi.bak -e "s#(.{2}$)##g;" info.txt

This is one liner perl code ...
This User Gave Thanks to fly2matrix For This Post:
# 5  
Old 11-02-2010
Quote:
Originally Posted by newzyer
...How can I remove the last two values of this line using perl script?

John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638:9/3/90:45900

The result file should look like this:
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638
Here's one way -

Code:
$
$
$ # show the content of the input data file "info.txt"
$
$ cat info.txt
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638:9/3/90:45900
Brian Jonathan:567-690-5668:98 state way, Newyork, NY 25638:9/3/70:55921
Jim cary:663-600-4660:78 state way, Minneapolis, MN 56892:6/8/80:52589
$
$ # remove the last two fields from each line of "info.txt"
$
$ perl -plne 's/(:[^:]+){2}$//' info.txt
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638
Brian Jonathan:567-690-5668:98 state way, Newyork, NY 25638
Jim cary:663-600-4660:78 state way, Minneapolis, MN 56892
$
$

If you want to do inline edits -

Code:
$
$
$ # back up "info.txt" into "info.txt.bak" and then remove the last two fields from each line of "info.txt"
$
$ perl -i.bak -ple 's/(:[^:]+){2}$//' info.txt
$
$ # confirm that the file "info.txt" was actually updated
$
$ cat info.txt
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638
Brian Jonathan:567-690-5668:98 state way, Newyork, NY 25638
Jim cary:663-600-4660:78 state way, Minneapolis, MN 56892
$
$ # confirm that the file "info.txt" was backed up into "info.txt.bak" before the update
$
$ cat info.txt.bak
John Carey:507-699-5368:29 Albert way, Edmonton, AL 25638:9/3/90:45900
Brian Jonathan:567-690-5668:98 state way, Newyork, NY 25638:9/3/70:55921
Jim cary:663-600-4660:78 state way, Minneapolis, MN 56892:6/8/80:52589
$
$
$

HTH,
tyler_durden
This User Gave Thanks to durden_tyler For This Post:
# 6  
Old 11-03-2010
Thanks Guys. It worked
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

PERL: In a perl-scripttTrying to execute another perl-script that SETS SOME VARIABLES !

I have reviewed many examples on-line about running another process (either PERL or shell command or a program), but do not find any usefull for my needs way. (Reviewed and not useful the system(), 'back ticks', exec() and open()) I would like to run another PERL-script from first one, not... (1 Reply)
Discussion started by: alex_5161
1 Replies

2. Shell Programming and Scripting

Excuting perl script from within a perl script with variables.

Not sure what I am doing wrong here, but I can print the list with no issue. Just a blank screen with the 'do'. #!/usr/bin/perl open FILE, "upslist.txt"; while ($line=<FILE>){ if ($line=~/^(.*?),(.*?)$/){ #print "ups:$1 string:$2\n"; do 'check_snmp_mgeups-0.1.pl -H $1 -C $2'; } ... (1 Reply)
Discussion started by: mrlayance
1 Replies

3. Shell Programming and Scripting

Perl : embedding java script with cgi perl script

Hi All, I am aware that html tags can be embedded in cgi script as below.. In the same way is it possible to embed the below javascript in perl cgi script ?? print("<form action="action.htm" method="post" onSubmit="return submitForm(this.Submitbutton)">"); print("<input type = "text"... (1 Reply)
Discussion started by: scriptscript
1 Replies

4. Shell Programming and Scripting

executing perl script from another perl script : NOT WORKING

Hi Folks, I have 2 perl scripts and I need to execute 2nd perl script from the 1st perl script in WINDOWS. In the 1st perl script that I had, I am calling the 2nd script main.pl =========== print "This is my main script\n"; `perl C:\\Users\\sripathg\\Desktop\\scripts\\hi.pl`; ... (3 Replies)
Discussion started by: giridhar276
3 Replies

5. Shell Programming and Scripting

calling a perl script with arguments from a parent perl script

I am trying to run a perl script which needs input arguments from a parent perl script, but doesn't seem to work. Appreciate your help in this regard. From parent.pl $input1=123; $input2=abc; I tried calling it with system("/usr/bin/perl child.pl $input1 $input2"); and `perl... (1 Reply)
Discussion started by: grajp002
1 Replies

6. Shell Programming and Scripting

HELP on Perl array / sorting - trying to convert Korn Shell Script to Perl

Hi all, Not sure if this should be in the programming forum, but I believe it will get more response under the Shell Programming and Scripting FORUM. Am trying to write a customized df script in Perl and need some help with regards to using arrays and file handlers. At the moment am... (3 Replies)
Discussion started by: newbie_01
3 Replies

7. Shell Programming and Scripting

Perl :How to print the o/p of a Perl script on console and redirecting same in log file @ same time.

How can i print the output of a perl script on a unix console and redirect the same in a log file under same directory simultaneously ? Like in Shell script, we use tee, is there anything in Perl or any other option ? (2 Replies)
Discussion started by: butterfly20
2 Replies

8. Shell Programming and Scripting

perl/unix: script in command line works but not in perl

so in unix this command works works and shows me a list of directories find . -name \*.xls -exec dirname {} \; | sort -u | > list.txt but when i try running a perl script to run this command my $query = 'find . -name \*.xls -exec dirname {} \; | sort -u | > list.txt';... (2 Replies)
Discussion started by: kpddong
2 Replies

9. Shell Programming and Scripting

[Perl] Accessing array elements within a sed command in Perl script

I am trying to use a script to replace the header of each file, whose filename are stored within the array $test, using the sed command within a Perl script as follows: $count = 0; while ( $count < $#test ) { `sed -e 's/BIOGRF 321/BIOGRF 332/g' ${test} > 0`; `cat 0 >... (2 Replies)
Discussion started by: userix
2 Replies

10. Shell Programming and Scripting

Perl: Run perl script in the current process

I have a question regarding running perl in the current process. I shall demonstrate with an example. Look at this. sh-2.05b$ pwd /tmp sh-2.05b$ cat test.sh #! /bin/sh cd /etc sh-2.05b$ ./test.sh sh-2.05b$ pwd /tmp sh-2.05b$ . ./test.sh sh-2.05b$ pwd /etc sh-2.05b$ So... (10 Replies)
Discussion started by: vino
10 Replies
Login or Register to Ask a Question