To compare the content of two text files


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# 1  
To compare the content of two text files

I have two files,

sec.txt(1st File)

3172

disp.txt(2nd file)

the file name is
***********
45676

Now i want to compare the value in sec.txt file with disp.txt file
Excatly i want to compare the value 3172 in first file and 45676 in second file.

i want to compare the first line of first file and fourth line of second file with IF condition.
Please help me with the code.Smilie
# 2  
Hi,

try this:
Code:
#!/bin/bash

if [ "$( cat $1)" -lt "$( sed -n '4 p' $2)" ]
then
        echo "less than"
fi

with parameter
Code:
 sec.txt disp.txt

# 3  
Hi rammm,

One way using perl:
Code:
$ head sec.txt disp.txt 
==> sec.txt <==
3172

==> disp.txt <==

the file name is
***********
45676
$ cat script.pl
use warnings;
use strict;

my @nums;

while ( <> ) {
        chomp;
        if ( m/\A\d+\Z/ ) {
                push @nums, $_;
                close $ARGV;
        }
}

if ( @nums >= 2 ) {
        printf qq[%s\n], ($nums[0] == $nums[1]) ? q[Equal] : q[Not equal];
}
else {
        printf qq[Error\n];
}
$ perl script.pl sec.txt disp.txt 
Not equal

# 4  
Hi pokerino,
Its not working. Can you explain me in detail. I used the code as follows,

Code:
#!/bin/bash  if [ "$( cat $sec.txt)" -lt "$( sed -n '4 p' $disp.txt)" ] then         echo "less than" fi

---------- Post updated at 07:41 AM ---------- Previous update was at 07:40 AM ----------

Hi birei,
thanks for your help. I am not using perl. I am using bash. Can you help me out in that.

Last edited by Scrutinizer; 04-19-2012 at 12:55 PM.. Reason: code tags
# 5  
You write the code in a file called
Code:
newfile.sh

Make this file executable with
Code:
chmod 750 newfile.sh

run with
Code:
./newfile.sh sec.txt disp.txt

the parameter -lt is "less than" you can also use -gt "greater than" -eq "equal"
# 6  
Hi pokerino,
Thanks. the code is working but i didt run the script separately i.e ./newfile.sh sec.txt disp.out . If i run in that way it is working. I am using this code as part of the script. That is this code comes in one part of big script file. Then in that case how can i run the file with parameter in run time. I want to use those parameter files inside the code or inside the main script file. help me out.
# 7  
You can write the filenames replacing
Code:
$1

and
Code:
$2

.
Or insert a variable like
Code:
$MYFILE_1

and
Code:
$MYFILE_2

, in replace
Code:
$1

and
Code:
$2

, and put the value in the head fo your big script file.
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