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Here is an example of a file I am working with:


C 4704 CB 1318 ASP 115 BGRF 1 weak 0.0% 4.33
C 4720 OD 1322 ASP 115 BGRF 1 weak 0.0% 3.71
O 4723 OD 1322 ...

for (@test)
{
$last = `awk '/OXT/{print \$4}' $_`;
$lastnum = `awk '/OXT/{print \$5}' $_`;
system("sed -i -e '/O ${last} ${lastnum}/{s/-0.51000\$/-0.25500/;}' $_");
system("sed...

I want to search for a number found in the 4th column on a specific line in a file and store that value into a variable. This file contains over 7000 lines of data. The specific line I am looking...

How would I pass awk output to a perl variable?

For example, I want to save the value in the 4th column into the variable called test. My best guess is something as follow, but I am sure this...

I am trying to use a script to replace the header of each file, whose filename are stored within the array $test, using the sed command within a Perl script as follows:

$count = 0;
while ( $count...

I have a similar issue. I also need to pass a perl variable into the sed command as follows:

system("sed -e s/",$test[0],"/",$test[1],"/g file > output");
Basically, I want to have my perl...

I understand that in order to run basic unix commands I would normally type at the prompt, I would have to use the following format
system(ls -l);
or
exec(ls -l);

But when I actually try to use...

I grabbed the definition of sticky bit from wikipedia: "when set, items inside the directory can be renamed or deleted only by the item's owner, the directory's owner, or the superuser"

So would...

How come my code in the OP does not work? Is there a different syntax I need for the condition of my if statement?

Thanks. So it's not possible to check using the if statement?

I want to check if a zip code is valid, using a variable that stores the zipcode. I am not sure how I would do this in a script. I know that simply checking for the numerical range of the number...

If I use sticky bit, wouldn't that not allow my script to delete the temp file when he runs it? Since he is not the owner of my script.
If I need to allow him to run my script from within my...

I am curious if it is possible to do it without temp file, because I can set the data into a variable, but the only problem is the newlines not being stored as well. Is this a limitation with the...

I have a colon-delimited text file of names, addresses and phone numbers. I am trying to write a script that can add additional entries and then sort it alphabetical by last name and resave it to...