Shell Programming and Scripting

Hi All,
for a script I'm writing I need to be able to put the following command in a variable:

Code:

tail -30 <file> | egrep "JBoss \(MX MicroKernel\) .* Started"

I thought surround it with single quotes would work. However, it doesnt escape the wildcard, and results in the wildcard being expanded with local files beginning with "."

I've tried a hundred other ways to get this to work. Also some ways result in the correct results when i run echo $containingVar but running the command from the variable gives me this

Code:

$var                                                                                                               
tail: invalid option -- 3
Try `tail --help' for more information.

while entering it as it appears works fine. This one has been driving me crazy so any help would be appreciated!

How are you exactly initialising the variable "var"? Could you please post the exact line you're using?

various different ways: Here's the line that In my opinion should work:

Code:

$serverCheck='tail -30 /dir1/dir2/dir3/file.log | egrep "JBoss \(MX MicroKernel\) .* Started"'

Do you want result in variable "serverCheck" or are you evaluating variable "serverCheck" ?

If you want result in "serverCheck" then use

Code:

serverCheck=$(tail -30 /dir1/dir2/dir3/file.log | egrep "JBoss \(MX MicroKernel\) .* Started")

No. I need the resulting command stored in the variable. Not the result.

I invoke it with

$serverCheck

in another part of the script

Rmove sign "$" from the serverCheck

Code:

serverCheck='tail -30 /dir1/dir2/dir3/file.log | egrep "JBoss \(MX MicroKernel\) .* Started"'

thats the same code I wrote above. It doesn't work. The wildcard is expanded to include locale files. I use the '$' only when I want to call the resulting command.

---------- Post updated at 08:55 AM ---------- Previous update was at 08:55 AM ----------

my mistake. that's not what i wrote above. But above was a typo. I didn't put a '$'. Instead I've been putting what you wrote. Still doesnt work.