Programming

Hi guys,

I am new to unix shell scripts. I have a file-A.txt which contained several names in "ABCo12345678.gz_to_ABCn12345678.gz" format. I want to extract the numbers in a "for" loop that means I can not use cut -c6-13 A.txt.Dose anyone know how to do it by using awk? Thank you so much.

shrimpj

Try something like...

Code:

$ echo  "ABCo12345678.gz_to_ABCn12345678.gz" > file-A.txt

$ awk -F "[^0-9]*" '{print $2,$3}' file-A.txt
12345678 12345678

$

Thank you so much this is useful however, If it is possible do not send the string in to a file, I need use one line to apply this fuction as I will use for loop to read A.txt file.

So the ideal model would be
for f in A.txt; then
ID=???? (working on f varable to get ID)
if.....
Done

I apprieciate that awk have to excute on files. So do you have other solutions without using awk? Thank you in advance.

if you are reading the file by other method and want to feed awk line by line, you could use the below logic

Code:

while read line
do
echo $line|awk -F "[^0-9]*" '{print $2,$3}'
done < input_file.txt

Problem solved, thank you so very much