Shell Programming and Scripting

Hope this helps:

Code:

ddl10197@GT109867 ~
$ sort foo | uniq > foo.tmp

ddl10197@GT109867 ~
$ sort bar | uniq > bar.tmp

ddl10197@GT109867 ~
$ comm -23 foo.tmp bar.tmp
GlobalUserManagement
USAccountSummary

ddl10197@GT109867 ~
$ grep GlobalUserManagement bar

ddl10197@GT109867 ~
$ grep USAccountSummary bar

Hi All,
Thanks for your response.But the solution provided seems not to be dynamic.
If any one can help running a for loop comparing the strings one by one in both the files i.e(comparing the first string from first file with all the strings in second file if it is not present outputting into third file).

i have got a code chunk,but it is not working,
can anyone help me modify it for the above requirement?

first code chunk i got is:
awk 'FILENAME=="file1" { if( $0 in arr) {continue} else {print $0 } } FILENAME=="file2" {arr[$0]++ }' file2 file1

but i guess there is some syntax problem as it is not working


The other code chunk i got is:

#!/usr/bin/ksh
set -x
> outputfile
awk '
BEGIN {
while ( getline < "file1" ) { arr[$0]=1 }
}
{ if ( arr[$0] != 1 ) print FILENAME":" $0
else delete arr[$0];
}
END {
for( key in arr )
if ( arr[key] == 1 ) print "file1:" key
} ' file2 >> outputfile


Can anyone help me finding what is the problem with the above two code chunks as i am not able to run these,getting some errors


Else,if both the codes doesnt work,could anyone help me providing the code to compare two files containing strings and output the string that are present in first file but not in second in third file.

You can use arrays or any other way,

The files will look like

file1
BasicServicesClone2
BasicServicesClone1
DocGenClone1
USEStatementClone2
USEStatementClone1

file2
BasicServicesClone2
BasicServicesClone1
DocGenClone1
USEStatementClone2


the output should be
USEStatementClone1


as it is present in file 1 but not in file2

angheloko's solution works.

Do you have a grep version without the -f option? With awk you can get the desired output with:

Code:

awk 'NR==FNR{a[$0];next}!($1 in a)' file2 file1

Regards

Hi Franklin52,

Thanks for your update but when i am trying the code which you have given,



It is showing as below:



awk 'NR==FNR{a[$0];next}!($1 in a)' file2 file1
awk: syntax error near line 1
awk: bailing out near line 1



angheloko's solution was good,there he was grepping seperately for each string which should not be the case, as i have to compare two files containing strings line by line and it should be generic i.e the strings may change and i have to output the strings which are present in first file and not in second.The file format i have mentione in my previous post.
Could anyone help me writing a generic script to first store all the strings of both the files in arrays and compare those arrays and one by one??

Because the above line of code is not working here,Syntax error?

Could anyone help??

Thanks in advance

Use nawk or /usr/xpg4/bin/awk on Solaris.

Regards

Hey thanks all,its working now..!!