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Thanks for the warning, but the question I asked has nothing directly to do with the homework I was assigned. My homework questions are in much bigger scale, there is absolutely no possibility of...

thank you!

Hi, I am making a program that needs to detect if the program name in parameter is a valid runable program.
But the line if [ -x ${1} ]; then never seem to work.
Even if I run like:
./script cat...

thank you

Hi, i am making a simple program with a optional -t as the 3rd parameter.
Submit course assignment -t dir

In the script, i wrote:
#!/bin/bash
echo "this is course: ${1}"
echo "this is...

thanks fight club and Aia. With your help i got this question done

Hello everyone. I am new to unix, nice to meet you all.
I have a small problem with a question.
I have to write a command that finds all the postal codes in a txt file. All postal codes will begin...