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Thanks a lot!

It depends how you are using SSH in your script. You could filter out the banner using a regex, or maybe try the Expect module.

This is taken from perlop. I can't understand what's going on, please can someone explain this for me?


$hexdigit = (0 .. 9, 'a' .. 'f')[$num & 15];

to get a hexadecimal digit

Franklin52, that doesn't give me the if/else functionality. I need it to either print the first field, or if there are no fields, print a newline. Also, I am manipulating the input from grep.
...

That makes sense. So awk chokes when it receives an empty string. That is a huge drawback. Thanks for letting me know.

BTW, I was trying to replace the following code with a one-liner:
...

If there exists a field in stdin, print it, otherwise, print hello.....

These print nothing:

cat /dev/null | awk '{if ( length > 0 ) print $1; else print "hello"}'

cat /dev/null | awk '{if...

Hi radoulov

Your code works perfectly. You have taught me something new and I am extremely grateful.

Regards

Thanks for your fast response.

Unfortunately read only reads the first line, even if I set IFS like you did.

This is what happens:

nptcmc01,sys,root # (
> IFS='
> '
> read a b c d < file...

Example output:

/tmp/generatelines.sh
line1
line2
line3
line4

I want each output line assigned to its own variable, ie:

"line1" --> $a
"line2" --> $b
"line3" --> $c
"line4" --> $d
...