Shell Programming and Scripting

Hi All,

I want to write a sh shell script to read input report and search for a specefic pattern in file and print 3 record above and 2 record below the line in which pattern found.

My file contains different- different pattern repeatedly, same pattern set of records should go into one file and similiarly for other type of pattern

input file for example

Program
Date
TIME
Program ID: ABC
Message
End of Program

Program
Date
TIME
Program ID: PQR
Message
End of Program

Program
Date
TIME
Program ID: XYZ
Message
End of Program

Program
Date
TIME
Program ID: ABC
Message
End of Program

Program
Date
TIME
Program ID: XYZ
Message
End of Program


in this example , The scripts should create three files having records set for Program ID: XYZ in first file
Program ID: ABC in second file
Program ID: PQR in third file

Thanks in Advance

Singhal

use this..

Code:

awk 'c-->0;$0~s{if(b)for(c=b+1;c>1;c--)print r[(NR-c+1)%b];print;c=a}b{r[NR%b]=$0}' b=3 a=2 s="pattern" filename

The solution is not working. the pattern is : Program ID based on i need to split the files which will contians record set for all smimilar Program ID values

vidyadhar85,

I don't get any output with your command.

singhald,

This should create the files as desired:

Code:

awk 'BEGIN{FS=OFS="\n"}{print $0 "\n" > $4}' RS= file

Regards

Code:

 
home/> cat vvv
2
34
42
1
45
1
12
home/l> awk 'c-->0;$0~s{if(b)for(c=b+1;c>1;c--)print r[(NR-c+1)%b];print;c=a}b{r[NR%b]=$0}' b=3 a=2 s="45" vvv
34
42
1
45
1
12

Have you tried your solution with the given file of the OP?
The OP wants the output in 3 files, check the 1st post.

Regards

Wow!!! Franklin your solution is working fine. Thanks you Franklin, vidyadhar for your valuable and fast response

Singhal

-----Post Update-----

Hi Franklin,

Now if input file dont have any blank line after the set of records, would this code work fro below ex.

Program ID: ABC
Message
End of Program
Program:2
Date:
TIME:
Program ID: PQR
Message
End of Program
Program:3
Date:
TIME:
Program ID: XYZ
Message
End of Program
Program:4
Date:
TIME:
Program ID: ABC
Message
End of Program
Program:5
Date:
TIME:
Program ID: XYZ
Message
End of Program

Please suggest me .....