I know i can redirect the output but it still did not remove the lines from the main file. Sorry if that was unclear before.
Omg you are fast with editing . I tested the revised code and it seems to work fine. I now have 2 files with different output in each. I will test it some more with other files to be sure but it seems to work. Thank you again for the extremly fast helping.
Hello SDohmen,
Here is exactly what you may be looking for.
Above code will create a backup for main_file with name main_file_Original and remvove non-matching lines from main_file too, let me know if this helps you. EDIT: Also you could try following too. Here if first awk statement fails then off course 2nd statement to change Input_file name will not be executed then.
Thanks,
R. Singh
Last edited by RavinderSingh13; 02-10-2016 at 09:55 AM..
Reason: Added one more solution on same now.
I want to search a file for a string and then if the string is found I need the line that the string is on - but also the previous two lines from the file (that the pattern will not be found in)
This is on solaris
Can you help? (2 Replies)
hi,,
i hav a file with many lines.i need to remove all lines before a line begginning with a specific pattern from the file because these lines are not required.
Can u help me out with either a perl script or shell script
example:-
if file initially contains lines:
a
b
c
d
.1.2
d
e
f... (2 Replies)
Hi,
I need to get specific parts in a large file.
I need to:
Get a line containing an IP address, and read from there to another line saying ***SNMP-END***
So, I have the start and the end well defined, but the problem is that apparently the awk command using the -F option doesn't work... (17 Replies)
I need to send email to receipient in each block of data in a file which has the sender address under TO and just send that block of data where it ends as COMPANY.
I tried to work this out by getting line numbers of the string HELLO but unable to grab the next block of data to send the next... (5 Replies)
I have a file like this - I want to remove the 2015 (or any four digit #) from column $4 so I can get:
Nov 05 1997 /ifs/inventory2/
for example. Im not sure how. Should I use an if statement with awk?
Jan 16 2015 23:45 /ifs/sql_file
Jan 16 2015 23:45 /ifs/sql_file
Nov 05 2015 1997... (4 Replies)
I am trying to remove lines in the target.txt file if $5 before the - in that file matches sorted_list. I have tried grep and awk. Thank you :).
grep
grep -v -F -f targets.bed sort_list
grep -vFf sort_list targets
awk
awk -F, '
> FILENAME == ARGV {to_remove=1; next}
> ! ($5 in... (2 Replies)
I am trying to remove each line in which $2 is FP or RFP. I believe the below will remove one instance but not both. Thank you :).
file
12
123 FP
11
10 RFP
awk
awk -F'\t' '
$2 != "FP"' file
desired output
12
11 (6 Replies)
Hi,
I'd be grateful for your help with the following. I have a file (file.txt) with 10 columns and about half a million lines, which in simplified form looks like this:
ID Col1 Col2 Col3....
a 4 2 8
b 5 6 1
c 8 4 1
d... (4 Replies)
In the awk below I am trying to remove all lines above and including the pattern Test or Test2. Each block is seperated by a newline and Test2 also appears in the lines to keep but it will always have additional text after it. The Test to remove will not. The awk executed until the || was added... (2 Replies)
In the awk piped to sed below I am trying to format file by removing the odd xxxx_digits and whitespace after, then move the even xxxx_digit to the line above it and add a space between them. There may be multiple lines in file but they are in the same format. The Filename_ID line is the last line... (4 Replies)