Question

Unix Script for Reading text file line by line

Asked by: ajexpert

OK.  I need help in unix scripting.
I have attached a sample file.  Here are my queries.

1.      Read the text file line by line.  So there should be 5 lines to be read
2.      Find t.mgmt_sa_code='TRADERA' and capture TRADERA in variable.
3.      Save each line in a separate file.  For e.g. the first line of the file will be saved with a filename TRADERA.sql.  So 5 lines means 5 files should be saved when the program is completed

Please provide the script which can do the above.
I believe it should be simple.

Thanks,
ajexpert

  • sample.txt
    • 2 KB

    file to be read line by line in unix

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Asked On
2008-07-29 at 18:49:39ID23606051
Tags

Unix

,

Unix Scripting

,

Testing on Cygwin

Topics

KornShell (ksh)

,

Unix Systems Programming

,

CYGWIN

Participating Experts
3
Points
250
Comments
12

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Answers

 

by: ozoPosted on 2008-07-29 at 19:13:15ID: 22117116

while read line ; do
 echo $line > ${line/*t.mgmt_sa_code="'"(*)"'";*/\1}.sql
done < sample.txt

 

by: ajexpertPosted on 2008-07-29 at 19:20:38ID: 22117132

Thanks ozo, but the solution is not complete

 

by: ajexpertPosted on 2008-07-29 at 19:21:52ID: 22117137

it doesnt mentions sample.txt is being read

Can you please provide the complete solution?

 

by: ozoPosted on 2008-07-29 at 19:23:43ID: 22117141

What else dp you need?

 

by: ajexpertPosted on 2008-07-29 at 19:32:33ID: 22117166

can you please tell me how do i do this in cygwin?

 

by: ajexpertPosted on 2008-07-29 at 19:37:58ID: 22117178

I am getting error
bash: ${line/*t.mgmt_sa_code=""(*)"";*^1}.sql: ambiguous redirect

 

by: ozoPosted on 2008-07-29 at 19:46:17ID: 22117206

Do you have ksh on your cygwin? or would you prefer a bash script?

 

by: ajexpertPosted on 2008-07-29 at 19:49:40ID: 22117212

how to check if ksh is available?
I would prefer ksh script

Thanks in advance

 

by: ozoPosted on 2008-07-29 at 20:11:56ID: 22117276

The above was a ksh script,
below is a bash script

#!/usr/bin/bash
while read line ; do
 f=${line#*t.mgmt_sa_code="'"}
 echo $line > ${f%"'";*}.sql
done < sample.txt

 

by: ajexpertPosted on 2008-07-29 at 20:46:41ID: 22117383

Thanks a lot ozo.

Can you please tell me how to execute the same in cygwin using ksh

Thanks in Advance.

 

by: TintinPosted on 2008-07-29 at 20:56:32ID: 22117409

ksh isn't included with cygwin by default, so you need to run the cygwin setup and select ksh from the list of packages to install.

 

by: ghostdog74Posted on 2008-07-29 at 21:51:07ID: 22117573

in cygwin, you should have awk. Use awk

awk '{
 for( i=1;i<=NF;i++) {
  if($i ~ /t.mgmt_sa_code=/){
   m=split($i,a,"=")
   gsub(/\047|;/,"",a[2])   
  }
 }
 print $0 > a[2]".txt"
}
' file

                                              
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