[SOLVED] Unable to cat a data file into a script file (bash) on terminal command line

Issue

Im new to bash, and I am unable to cat a file and use the pipe command on the terminal using bash.

This is what ive tried on the terminal command line

$ cat data | readlooptest

however i always get this message when i use the pipe |

-bash: readlooptest: command not found

I have a Script named readlooptest, and a data file

script contents of readlooptest

#!/bin/bash
read myLine
sum=0
for i in $myLine
do
    sum=`expr $sum + $i`
done
echo "sum is: $sum"

data file contents are

6 4 4 7 7 

So once the commands are entered in terminal, the output should be

$ chmod +x readlooptest
$ cat data | readlooptest
sum is : 28

However I get

-bash: readlooptest: command not found

Solution

This has nothing to do with piping or cat. The actual problem is that you need to specify where readlooptest is, since it's not in your PATH. If it's in the working directory, simply add ./ to the start:

$ cat data | ./readlooptest

Answered By - wjandrea