Bash脚本和管道

Question

I have the following simple bash script:

for VAR
do
   echo file found $VAR
done

what I want is for it to print all the files that contain the extension .png. I would expect the following command line to work, but it does not. Why?

ls *.png | myscript.sh

or

./myscript.sh < `ls *.png`

Answer 1

您需要xargs ：

ls *.png | xargs myscript.sh

Answer 2

To read standard input script should look like:

while read line; do
  echo file found $line
done