Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Executing a awk command inside perl script --
Top Forums Programming Executing a awk command inside perl script -- Post 302543256 by Alkass on Saturday 30th of July 2011 09:57:23 AM
Old 07-30-2011
Executing a awk command inside perl script --
Hello experts

I want to execute a awk command, which reads from txt files and sums the numbers from the first column for those listed only inside a <init> block -- The awk command is like

Code:
awk '/<\/?init>/{x = !x}x{a++}x && a > 2{sum+=$1}END{printf"%E" "\n", sum}

So, I want to execute it inside a perl script, and execute the awk command for the infile which is also defined outside awk loop, ie doing something like


Code:
foreach $infile (@ARGV) {
  $gzin = gzopen($infile, "r") || die ("Couldn't open file $infile\n");

  # No. events and cross-section from current file
 my $xsec= `awk '/<\/?init>/{x = !x}x{a++}x && a > 2{sum+=$1}END{printf"%E" "\n", sum}' $infile`;

But this does not work and I get this

Code:
Use of uninitialized value in concatenation (.) or string at merge.pl line 54.
awk: /</?init>/{x = !x}x{a++}x && a > 2{sum+=}END{printf"%E" "
awk:           ^ unterminated regexp
awk: cmd. line:1: /</?init>/{x = !x}x{a++}x && a > 2{sum+=}END{printf"%E" "
awk: cmd. line:1:                                                          ^ unexpected newline or end of string
awk: cmd. line:1: ", sum}
awk: cmd. line:1: ^ unterminated string
Argument "" isn't numeric in numeric eq (==) at merge.pl line 98.

Any ideas ?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Run the command inside perl script

I have a command which will run fine in a unix command prompt. Can you tell how to interprete this command inside perl script...... The command is : perl -pe 's/(\|333\}.*)\}$/$1|1.6}/' FIA.txt This will search for the number 333 and appends 1.6 at the end of that line....... (1 Reply)
Discussion started by: vinay123
1 Replies

2. Shell Programming and Scripting

Error executing shell command from a perl script

Hi Gurus, I've a find command that gets the list of files from a source directory where the extension is not html, xml, jsp, shtml or htaccess. The below find command runs fine from the command prompt or in a shell script. I need to eventually run it in a PERL script and am getting the... (5 Replies)
Discussion started by: voorkey
5 Replies

3. Shell Programming and Scripting

Perl script not executing

Hi All, I have been given a perl script to modify but which is not running completely.And it is not showing any errors also. The script is : #!/usr/local/bin/perl print "Which transaction? "; print "\n"; print "1 - Inquiry"; print "\n"; print "2 - Delete Bank"; print "\n"; print... (8 Replies)
Discussion started by: usha rao
8 Replies

4. UNIX for Dummies Questions & Answers

Problem with executing command inside a cron job

Hi All, I have scheduled a script in cron which writes output to the below file. ....>> /data/Target/wrapper_invoke_ds_job_`date '+%Y%m%d'`.ksh_out 2>&1 But the date command is not getting resolved in the format specified. It just resolves to the following. wrapper_invoke_MQ_ds_job_Tue... (3 Replies)
Discussion started by: pkm_oec
3 Replies

5. Shell Programming and Scripting

Executing AWK in a perl script using 'system'...

I have a simple perl script that looks similar to this: #!/usr/bin/perl/ # Have a lot of PERL code in the front of this script. #Would now like to execute a system command using AWK system (qq(cd /location && awk '/full/ {print $1;exit}' /myfile)); The system command in my perl script... (4 Replies)
Discussion started by: SysAdm2
4 Replies

6. Shell Programming and Scripting

Error in executing Perl script

Hello All I am facing an issue The unix script is running fine in unix environment which uses ssh connection but when I try to run the same in informatica environment (same server where I was running the unix script manually successfully) its showing the below error command-line line 0:... (11 Replies)
Discussion started by: Pratik4891
11 Replies

7. Shell Programming and Scripting

usage of AWK command under perl script

i have two files as shown below t1.txt: argument1 argu2 argu37 t2.txt: 22 33 44 i want o/p as argument1 22 argu2 33 argu37 44 i am trying to merge two file under perl script using following system("paste t1.txt t2.txt | awk... (3 Replies)
Discussion started by: roopa
3 Replies

8. 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

9. Shell Programming and Scripting

Multiple command execution inside awk command during xml parsing

below is the output xml string from some other command and i will be parsing it using awk cat /tmp/alerts.xml <Alert id="10102" name="APP-DS-ds_ha-140018-componentFailure-S" alertDefinitionId="13982" resourceId="11427" ctime="1359453507621" fixed="false" reason="If Event/Log Level(ANY) and... (2 Replies)
Discussion started by: vivek d r
2 Replies

10. Shell Programming and Scripting

Executing sed command inside a bash script

I want to run commands inside a bash script. An example is I want to pass the command in a string as regexp as an argument to the script, then run sed on the bash variable sed.sh regexp sed.sh "-i \"s/<p>//g\"" then call sed "$regexp" $fl (3 Replies)
Discussion started by: Kangol
3 Replies

LEARN ABOUT MOJAVE

sleep

SLEEP(1)						    BSD General Commands Manual 						  SLEEP(1)

NAME

     sleep -- suspend execution for an interval of time

SYNOPSIS

     sleep seconds

DESCRIPTION

     The sleep command suspends execution for a minimum of seconds.

     If the sleep command receives a signal, it takes the standard action.

IMPLEMENTATION NOTES

     The SIGALRM signal is not handled specially by this implementation.

     The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point).  This is a non-
     portable extension, and its use will nearly guarantee that a shell script will not execute properly on another system.

EXIT STATUS

     The sleep utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     To schedule the execution of a command for x number seconds later (with csh(1)):

	   (sleep 1800; sh command_file >& errors)&

     This incantation would wait a half hour before running the script command_file.  (See the at(1) utility.)

     To reiteratively run a command (with the csh(1)):

	   while (1)
		   if (! -r zzz.rawdata) then
			   sleep 300
		   else
			   foreach i (`ls *.rawdata`)
				   sleep 70
				   awk -f collapse_data $i >> results
			   end
			   break
		   endif
	   end

     The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
     it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
     is created).  The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
     courteously by sleeping for 70 seconds in between each awk job.

SEE ALSO

     nanosleep(2), sleep(3)

STANDARDS

     The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

HISTORY

     A sleep command appeared in Version 4 AT&T UNIX.

BSD
								  April 18, 1994							       BSD
All times are GMT -4. The time now is 04:54 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy