Shell Programming and Scripting

Hello,

I have a file containing lines such as:

Code:

 
       (1 104  (16) (17)    (18) (102))$
       (1 105  (16) (17) (19:21) (102))$

I would like to extract the numbers, only by using awk (or gawk).

I do not want to use "sed" as it is very slow.

For now my solution consists in using the sub command with gawk, and substitute "(", ")" and "$" by "". However I don't know how to do these substitution with only one "sub" command (I am using 4 "sub" commands).

Do you have any idea how I could improve my script to do that?

Thanks

tr was made for that.

Code:

tr -d '($)'  < file

And here is the time test:

Code:

# time awk '{gsub("[($)]","",$0)}1' file > /dev/null

real    0m0.311s
user    0m0.244s
sys     0m0.028s
# time tr -d '($)' < file > /dev/null

real    0m0.065s
user    0m0.024s
sys     0m0.004s
# time sed 's/(\|\$\|)//g' file > /dev/null

real    0m1.144s
user    0m1.092s
sys     0m0.000s
# wc file
 18000 108000 738000 file

Thank you!