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.
Hi,
try this:
#!/bin/bash
if [ "$( cat $1)" -lt "$( sed -n '4 p' $2)" ]
then
echo "less than"
fi
with parameter
sec.txt disp.txt
Hi rammm,
One way using perl:
$ 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
Hi pokerino,
Its not working. Can you explain me in detail. I used the code as follows,
#!/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.
You write the code in a file called
newfile.sh
Make this file executable with
chmod 750 newfile.sh
run with
./newfile.sh sec.txt disp.txt
the parameter -lt is "less than" you can also use -gt "greater than" -eq "equal"
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.
You can write the filenames replacing
$1
and
$2
.
Or insert a variable like
$MYFILE_1
and
$MYFILE_2
, in replace
$1
and
$2
, and put the value in the head fo your big script file.
Thank you it works fine. 
One more thing,
I have a text file as 1.txt with following content,
q34566788u
w2343556666t
I have used script file sample.sh with content,
#!/bin/ksh
echo "Enter the Value : "
read value
echo "$value"
sed '1s:\(.\{4\}\)\(.\{3\}\):\1$value:' 1.txt
I used the script file to replace the value 6678 in 1.txt file with the input value on run time which i try to read with variable name value. But its not replacing the value stored on variable instead its replacing $value i.e o/p
q345$value8u
.
I want the output as
q345(input value)8u
with input value on runtime in dash places.
Help me out.
---------- Post updated at 10:37 AM ---------- Previous update was at 10:34 AM ----------
I got the result,
I $value in sed command inside '$value ' it works.
in sed command use a double quote instead a single quote.
#!/bin/ksh
mv /int/int1/abc.txt /int/int1/1.txt
echo "Enter the Value : " read value echo "$value" sed '1s:\(.\{4\}\)\(.\{3\}\):\1'$value':' 1.txt
In the above code i try to replace the value in 1.txt file
But its not working. When i use someother file already created in that path, its working.
but when i created the file at run time as in above code its not working.
when i used the file 1.txt its replacing the string and not reading the input value.
Any solutions ????? :wall:
if you want replace value in the file you need to add
-i
option to sed. For a correct replacement of the keyword
$value
you need to change the single quote to double quote:
sed "1s:\(.\{4\}\)\(.\{3\}\):\1$value:" -i 1.txt
sed "1s:\(.\{4\}\)\(.\{3\}\):\1$value:" -i 1.txt
The exact command is not working.
but without -i its working as
sed "1s:\(.\{4\}\)\(.\{3\}\):\1$value:" 1.txt
Thanks
If i want to the output of above command in the same text file
i.e 1.txt means wat is the command?
I tried as
sed "1s:\(.\{4\}\)\(.\{3\}\):\1$value:" 1.txt > 1.txt
but its not working
i want the result in the same file which is reading file. any help?
---------- Post updated 04-25-12 at 01:47 AM ---------- Previous update was 04-24-12 at 02:07 AM ----------
I am using the following code for replacing the value in the file.
sed "1s:\(.\{4\}\)\(.\{3\}\):\1$value:" 1.txt
I want the output of above command in the same file i am reading i.e 1.txt.
I tried out as following, its not working
sed "1s:\(.\{4\}\)\(.\{3\}\):\1$value:" 1.txt > 1.txt
Also tried for
sed "1s:\(.\{4\}\)\(.\{3\}\):\1$value:" 1.txt >temp.txt; mv temp.txt 1.txt
But No value is replaced.
Any ideas?