Shell Programming and Scripting

Hi All,

Have a requirement where i needs to alter the Content of File once it is generated.

The File consist of Multiple line ...range from 2000-8000 lines.
I need to change the Content of Lines which match this Pattern

1|DT_Buried_Strap_Resistor~RES|DT_Buried_Strap_Resistor~RES|-1.000000e+20|1.000000e+20|-1.000000e+20|1.000000e+20|-1.000000e+20|1.000000e+20|VorR|0|0|

In short it must have 12 | (Pipe) symbols separating data from one another,Must also omit the Lines if it begins with #.

I need to change the value of 12 value to 50.I have highlighted the value in Red.For most of case the value will be 0...i just want to replace it as 50 in every line matching the pattern as i mentioned.

Can anyone help me to achieve this.I dont want to change anything else other than this content and just rewrite the same file in same location as input file passed.

Regards
Ashesh

try this...

Code:

awk -F "|" 'NF == 13 && $0 !~ /^#/ { $12=50}1' OFS=\| file

Hi Pamu,

Seems the script works fine when i run in unix.
But as i am very new to scripting can u please tell me how can i pass the file to this script.

Currently i just replaced the term 'file' in ur script with name of file... But i go back to file and open it remains same as 0...it dosenot write it back to the input file.

---------- Post updated at 12:07 AM ---------- Previous update was at 12:03 AM ----------

Hi Pamu,

I want to pass ther filename as an argument to this script.

try this..

Code:

awk -F "|" 'NF == 13 && $0 !~ /^#/ { $12=50}1' OFS=\| file > temp_file #Create one temp file
mv temp_file file   #Transfer it to original file

Hi Pamu,

Thanks for the reply.
Is it possible to Open the InputFile and write back to the same one rather than generating a Temp file and moving it.

---------- Post updated at 01:14 AM ---------- Previous update was at 01:05 AM ----------

Hi,

I pass the value to your script this way.

Code:

<Script id="Dispo">
  <WorkDir>/home/ntp_home/e701152/sapphire/wet/progs/JCalPara</WorkDir>
  <ExecCmd>./test.sh</ExecCmd>
  <TimeOut>600</TimeOut>
   
  <Param id="Dept">${StageWork}/dis/${WaferNC}.limit.dis</Param>
 </Script>

The text displayed in RED is the file that is been passed to Test.sh ( The script ).
I was looking for something which can open this file and rewrite back to it.

Hope u have a clear picture now.

Regards
Ashesh

It is always good to avoid performing read and write operation at the same time on a file.

To get the value marked in red

Code:

file_name=$(awk -F "[<>]" '/<Param id="Dept">/{print $3}' input_file)

and then perform opertion on the file

Code:

awk -F "|" 'NF == 13 && $0 !~ /^#/ { $12=50}1' OFS=\| $file_name > temp_file 
mv temp_file $file_name

Hope this helps you...

Hi Pamu,

I still face some issue passing the Input file name to the script.I believe the issue is because its too big.

When i test if the process is running using ps ux i get this result

/bin/bash ./test.sh /home/ntp_home/e701152/sapphire/wet/prodstag/stageWork/FAB8_NoCustomerCode
awk -F | NF == 13 && $0 !~ /^#/ { $12=50}1 OFS=|

The Filename name is Broken after No Customer Code.Actually the Filename runs much longer.

Fullname : FAB8_NoCustomerCode_RIPCORD1.01_8XYJ09015.000_C4-WETILT.01_E-RPCRD1-RERM-01-C4-025-ALL-01_11_EGBNE088TMC5_20120814-232625.limit.wcal.dis