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Find difference between two files

 
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# 8  
Old 06-12-2010
Quote:
Originally Posted by jagadish_gaddam
The below error encountered

szur1254pap:% awk 'NR==FNR{a[$0]=$0;next}!a[$0]' input.txt booknames.txt
a[$0]': Event not found
Use nawk or /usr/xpg4/bin/awk on Solaris.

You can also try:
Code:
awk 'NR==FNR{a[$0];next}!($0 in a)' file2 file1

# 9  
Old 06-12-2010
Hi.

Observations:

1) It is best to post a representative sample of data and your expected output,

2) csh will scan commands for "!', hence the error message:
Code:
a[$0]': Event not found

Assuming that your files may be sorted, then comm can do this task:
Code:
#!/usr/bin/env sh

# @(#) s1	Compare two files for content differences.

# Sort both files.
sort data1 > t1
sort data2 > t2

# Compare, suppress common lines, and those unique to file 2.
comm -23 t1 t2

exit 0

producing:
Code:
% ./s1
Ranger/OPTD/GBP

See man pages for details.

Best wishes ... cheers, drl
# 10  
Old 06-12-2010
"man diff", this will open man page of your system with all options it supports. if you have questions like that, try "Linux for dummy" book or "learn linux" dvds, all are available on Amazon. There's certain minimal level that you have to master, otherwise you will be stumbled on each command.

hope it helps
# 11  
Old 06-14-2010
sure...

---------- Post updated at 12:55 PM ---------- Previous update was at 12:40 PM ----------

Perfect.. Excellent!!

Thanks,Could you pls explain how the second line works.
 
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