/Shell/Bash/Shell script for guess for magic number

Shell script for guess for magic number

echo -en "Please guess the magic number: "
read X
echo $X | grep "[^0-9]" > /dev/null 2>&1
if [ "$?" -eq "0" ]; then
  # If the grep found something other than 0-9
  # then it's not an integer.
  echo "Sorry, wanted a number"
else
  # The grep found only 0-9, so it's an integer. 
  # We can safely do a test on it.
  if [ "$X" -eq "7" ]; then
    echo "You entered the magic number!"
  fi
fi

Source: shellscript.sh

Similar codes

0 vote387 views1 answer
PkgAcquire::Run (13: Permission denied)
Shell/Bash
3 votes102 views2 answers
Npm ERR! Maximum call stack size exceeded ubuntu
Shell/Bash
46 votes92 views6 answers
Git Commands List
Shell/Bash
0 vote125 views1 answer
To check the Logs in Ubuntu and Debian
Shell/Bash
0 vote100 views1 answer
I want to give a specific color to git
Shell/Bash
0 vote124 views1 answer
How to delete a directory for a different user in linux
Shell/Bash
1 vote102 views2 answers
Take a screenshot linux terminal
Shell/Bash
0 vote93 views1 answer
Tab to csv command line
Shell/Bash
4 votes59 views1 answer
Aws cli list-profiles
Shell/Bash
0 vote99 views1 answer
Best way to change the file extension in powershell
Shell/Bash