Perl to shell script


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Perl to shell script
# 1  
Old 08-21-2013
Perl to shell script

Following is the code in perl. Can we write the same thing in shell scripts ?? If yes how ? I have used associative arrays but unable to achieve what this is doing
Code:
open MYFILE, "<", "$ARGV[0]" or die "Can't open $ARGV[0] file \n";

################## to retieve the info and put them in associative arrray
$line = <MYFILE>;
@line1 = split(/,/ , $line);
$length = @line1;
$count = 0;
while($count < $length)
{
    $line1[$count] =~ s/^\"//; 
    $line1[$count] =~ s/\"$//;
    $count++;
}


$line = <MYFILE>;
@line2 = split(/,/ , $line);
$length = @line2;
$count = 0;
while($count < $length)
{
    $line2[$count] =~ s/^\"//; 
    $line2[$count] =~ s/\"$//;
    $count++;
}

$count = 0;
while($count < $length)
{
    $array{$line1[$count]}=$line2[$count];      #an associative array to store first 2 line info
    $count++;


Last edited by Franklin52; 08-22-2013 at 04:13 AM.. Reason: Please use code tags
# 2  
Old 08-22-2013
Something like this
Code:
awk -F, '{gsub(/\"/,x);for(i=1;i<=NF;i++){a[i];};getline;gsub(/\"/,x);for(i=1;i<=NF;i++){a[i]=$i}}' file

# 3  
Old 08-22-2013
:O

please explain the code you have written

Also,in the perl snippet there were two associative arrays line1 and line2 wherein the values were being stored. How are you doing it in shell ??
and what is the keyword 'file' for ?
can $1 be used instead ??

~thanks
# 4  
Old 08-22-2013
First of all, there is an error in my awk and this code is likely to suit your need

Code:
awk -F, '{gsub(/\"/,x);for(i=1;i<=NF;i++){a[i]=$i;};getline;gsub(/\"/,x);for(i=1;i<=NF;i++){array[a[i]]=$i}}' file

I see only one associative array %array on your code @line1 and @line2 are regular arrays. My understanding of your need is that you have a file
Code:
"abc","def","hij"
"123","456","789"

You want to assign
Code:
$array{"abc"} = 123, $array{"def"} = 456

If this is not your need, then you can well ignore the awk script and clearly post your need.

The awk script grabs the first line, removes all double quotes, puts the column values on an array 'a'. Then go to next line, iterate on the columns and creates an array 'array' (which is the associative array that you finally need) and use the previously assigned array 'a' to make a column to column assignment.

'file' is the file path of MYFILE in your script.

What do you refer by $1 ? Do you need a perl one liner for this need?

Last edited by rajamadhavan; 08-22-2013 at 05:46 AM..
# 5  
Old 08-22-2013
thanks it done
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Using Shell Script in place of Perl script to Unzip the zip files.

Hi Expert, We have some shell scripts which Internally uses Perl Script to Unzip the source zip files which comes to inbound directory. So now our requirement is to avoid the dependency on Perl Script and us Shell Script to unzip the files. I have the Perl script with me attached can some one... (3 Replies)
Discussion started by: naveen.dasu
3 Replies

2. Shell Programming and Scripting

How to capture the exit code of a shell script in a perl script.?

hi, i want to pop up an alert box using perl script. my requirement is. i am using a html page which calls a perl script. this perl script calls a shell script.. after the shell script ends its execution, i am using exit 0 to terminate the shell script successfully and exit 1 to terminate the... (3 Replies)
Discussion started by: Little
3 Replies

3. Shell Programming and Scripting

calling a shell script present on another server using perl script.

Hi, I am working on a sever A. I want to write a perl script to execute a shell script persent on the server B. please help me in this. thanks in advance. (3 Replies)
Discussion started by: anandgodse
3 Replies

4. Shell Programming and Scripting

How we can pass the argument when calling shell script from perl script

Can someone let me know how could I achieve this In one of per script I am calling the shell script but I need to so one thing that is one shell script call I need to pass pne argument.In below code I am calling my ftp script but here I want to pass one argument so how could I do this (e.g:... (5 Replies)
Discussion started by: anuragpgtgerman
5 Replies

5. 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

6. Shell Programming and Scripting

shell script to call perl script problems

Ok, don't ask me why, but all calls to perl must be called by a shell script. Its really not ideal, but its what I have to work with. Calling it isnt the issue, its passing in the arguments. I have about 1000 perl scripts to call by a shell script. Right now, I'm executing the shell script... (3 Replies)
Discussion started by: regexnub
3 Replies

7. Shell Programming and Scripting

perl script to check if empty files are created and delete them and run a shell script

I have a local linux machine in which the files are dumped by a remote ubuntu server. If the process in remote server has any problem then empty files are created in local machine. Is there any way using perl script to check if the empty files are being created and delete them and then run a shell... (2 Replies)
Discussion started by: hussa1n
2 Replies

8. Shell Programming and Scripting

Perl script 'system' linking to local shell script not working

Trying to figure out why this works: printpwd.pl #!/usr/bin/perl use CGI::Carp qw( fatalsToBrowser ); print "Content-type: text/html\n\n"; $A = system("pwd"); $A = `pwd`; print "$A\n"; ^^actually that works/breaks if that makes any sense.. i get the working directory twice but when... (5 Replies)
Discussion started by: phpfreak
5 Replies

9. Shell Programming and Scripting

call shell script from perl cgi script problem

hi,, i have perl scipt with line : system('./try.sh $t $d $m'); in shell scipt try.sh i have the line: echo $1 its not printing value of $t that i hav passed..y is it so..i am running it from apache web server (2 Replies)
Discussion started by: raksha.s
2 Replies

10. Shell Programming and Scripting

How to Run a shell script from Perl script in Parent shell?

Hi Perl/UNIX experts, I have a problem in running a shell script from my perl script (auto.pl). I run the perl script using perl auto.pl from the shell prompt The shell script picks the files in "input" folder and procesess it. The shell script blue.sh has this code. export... (16 Replies)
Discussion started by: hifake
16 Replies
Login or Register to Ask a Question