How do I remove leading spaces in UNIX when count of space character is not fixed? Example below-

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# 1  
Question How do I remove leading spaces in UNIX when count of space character is not fixed? Example below-

Script showStreamsGLIS$reg.$env.ksh gives me output as below-

Code:
Job  Stime Etime Status ExitCode
      GLIS-AS-S-EFL-LOCK-B   -----                -----                OI 103313880/0
    GLIS-ALL-Q-EOD-FX-UPDT-1730-B -----                -----                TE 0/0
    GLIS-TK-S-BWSOD-B        -----                -----                OI 191344064/0
      GLIS-TK-S-BWSODWAIT-B  -----                -----                OI 191344064/0
GLIS-ALL-S-BWEC-B            10/06/2016  10:48:12 -----                RU 196982837/1
  GLIS-ALL-S-BWEC-START-B    10/06/2016  10:48:13 -----                RU 196982837/1
    GLIS-ALL-S-BWEC-GATHER   10/06/2016  10:48:16 -----                RU 196982837/1
    GLIS-ALL-S-BWEC-BWPP-BAL-J -----                -----                OI 134547446/0
    GLIS-ALL-S-BWEC-BWBM-BALS-J -----                -----                OI 134547446/0
GLIS-ALL-S-EOD-FX-UPDT-1730-B -----                -----                OI 0/0
     GLIS-ALL-R-EOD-FX-UPDT-1730-B -----                -----                ST 0/0
    GLIS-ALL-Q-EOD-FX-UPDT-1730-B -----                -----                TE 0/0

My requirement is to get rows containing status as 'OI/OH/RU' (highlighted few possible status values) and remove all trailing spaces. And I am trying to integrate this code in a perl script.

Idea is to do it without saving the output in a file.

Last edited by Tanu; 10-18-2016 at 05:28 AM..
# 2  
Hello Tanu,

Could you please try following and let me know if this helps you.
Code:
awk '{sub(/^ +/,X,$0);print}'   Input_file

Thanks,
R. Singh
# 3  
I am using below and it is giving me error- egrep: write error: Broken pipe


Code:
my @pendJobs = `showStreamsGLIS$reg.$env.ksh  | egrep ' OH | OI | RU ' | awk '{sub(/^ +/,X,$0);print}'`;

P.S: I am getting the output from a script and I don't want to use a file to temporary store the data and perform these activities. Trying to fetch the rows in a single command.

Last edited by Tanu; 10-18-2016 at 05:05 AM..
# 4  
Hello Tanu,

Without sample Input_file or without letting us know what you are trying to achieve, we all could guess only. So as a guess could you please try following and let us know how it goes then(seems you are using perl and didn't test it).
Code:
 my @pendJobs = `showStreamsGLIS$reg.$env.ksh  | awk '/OH|RU|OI/{sub(/^ +/,X,$0);print}'`;

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
# 5  
Agree. Apologies for not providing proper requirement. Updated my original question.

This latest solution provided by you is not working as well. Error is "grep: write error: Broken pipe"

my piece of code is as below (nothing else in script except below calculation)-

Code:
my @pendJobs = `showStreamsGLIS$reg.$env.ksh  | awk '/OH|RU|OI/{sub(/^ +/,X,$0);print}'`;
chomp(@pendJobs);
print Dumper(\@pendJobs);
exit 1;

# 6  
Quote:
Originally Posted by Tanu
Agree. Apologies for not providing proper requirement. Updated my original question.
This latest solution provided by you is not working as well. Error is "grep: write error: Broken pipe"
my piece of code is as below (nothing else in script except below calculation)-
Code:
my @pendJobs = `showStreamsGLIS$reg.$env.ksh  | awk '/OH|RU|OI/{sub(/^ +/,X,$0);print}'`;
chomp(@pendJobs);
print Dumper(\@pendJobs);
exit 1;

Hello Tanu,

So a important step of trouble shooting is either in any tool/code/operation is never neglect your error messages. So here we could see you script and then awkcommand is there, so it means there could be a chance your script itself is having issues, so following are the points:
  1. Please try to run your script independently, is it running or not?
  2. Post your script(if possible) or let us know what it does with complete details.
  3. Check if you have used egrepcommand in script and try to figure out if that works or not?

Please follow above steps and additional too if you get any and let us know how it goes then.

Thanks,
R. Singh

Last edited by RavinderSingh13; 10-18-2016 at 07:31 AM.. Reason: Converted to formatted number-list with roman numerals
This User Gave Thanks to RavinderSingh13 For This Post:
# 7  
Thanks Ravindra.

I had egrep in my code (but strange that line was commented).
I did remove it and added escape character (\$0) and it worked.

Code:
my @pendJobs = `/ms/dev/saperp/sapbatchtools/$env/install/common/bin/autosys/showStreamsGLIS$reg.$env.ksh  | awk '/OH|RU|OI/{sub(/^ +/,X,\$0);print}'`;

Could you please explain the below highlighted part of your command-

Code:
awk '/OH|RU|OI/{sub(/^ +/,X,$0);print}';

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