UNIX for Dummies Questions & Answers

Hi Folks,

I wanted to know if i can use RegEx in a for-loop of a shell script.
Here's a scenario, I have a set of files say x1, x2, x3..x9 in a directory(obviously with files other than this pattern). I want to append a line of text to all files that follow pattern x[1-9]. Can someone help me out? I know its simple. But i just cannot get it work.

Code:

for i in "x[1-9]"
do
echo hello >> "$i"
done

I'm looking for something like the one above(which is not working for me).

make sure you are in the directory that contains those files or use their absolute path.

Code:

cd $YOURDIR
for i in x?
do
echo "hello" >>./$i
done

Or this:

Code:

#!/bin/ksh
 
cd ${working_dir}
ls x[1-9] | while read file
do
  echo "hello" >> ${file}
done

Thanks. This one worked perfect.

The original solution is great; it just needs to lose the double quotes around the x[1-9].

Regards,
Alister