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Top Forums UNIX for Advanced & Expert Users How to find a string in a line in UNIX file and delete that line and previous 3 lines ? Post 302901895 by vadlamudy on Friday 16th of May 2014 09:03:33 AM
Old 05-16-2014
How to find a string in a line in UNIX file and delete that line and previous 3 lines ?

Hi ,

i have a file with data as below.This is same file. But actual file contains to many rows.

i want to search for a string "Field 039 00" and delete that line and previous 3 lines in that file.. Can some body suggested me how can i do using either sed or awk command ?

Code:
 
Field 004 000000000100
Field 007 1125112233
Field 102 7000005253
Field 039 00
Field 004 000000000100
Field 007 1125112233
Field 102 7000005253
Field 039 91
Field 004 000000000100
Field 007 1125112233
Field 102 7000005253
Field 039 00
Field 004 000000000100
Field 007 1125112233
Field 102 7000005253
Field 039 91
Field 004 000000000100
Field 007 1125112233
Field 102 7000005253
Field 039 00
Field 004 000000000100
Field 007 1125112233
Field 102 7000005253
Field 039 00
Field 004 000000000100
Field 007 1125112233
Field 102 7000005253
Field 039 00
Field 004 000000000100
Field 007 1125112233
Field 102 7000005253

Thanks,
Venkat Vadlamudi.

Moderator's Comments:
Mod Comment Please use code tags next time for your code and data. Thanks

Last edited by vbe; 05-16-2014 at 10:27 AM.. Reason: code tags
 

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sact(1) 						      General Commands Manual							   sact(1)

Name
       sact - display current SCCS file editing activity

Syntax
       sact files

Description
       The  command  informs the user of any impending deltas to a named SCCS file.  This situation occurs when the command with the -e option has
       been previously executed without a subsequent execution of the command.	If a directory is named on the command	line,  behaves	as  though
       each file in the directory were specified as a named file, except that non-SCCS files and unreadable files are silently ignored.  If a name
       of - is given, the standard input is read with each line being taken as the name of an SCCS file to be processed.

       The output for each named file consists of five fields separated by spaces.

       Field 1	 Specifies the SID of a delta that currently exists in the SCCS file to which changes will be made to make the new delta.

       Field 2	 Specifies the SID for the new delta to be created.

       Field 3	 Contains the login name of the user who will make the delta (that is, executed a for editing.

       Field 4	 Contains the date that -e was executed.

       Field 5	 Contains the time that -e was executed.

Diagnostics
       See for explanations.

See Also
       delta(1), get(1), sccs(1), sccshelp(1), unget(1), sccsfile(5))
       Guide to the Source Code Control System

																	   sact(1)
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