/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 vote308 views1 answer
Usar comandos de linux en mi cmmd
Shell/Bash
2 votes327 views1 answer
Error: can't find python executable "python", you can set the python env variable.
Shell/Bash
1 vote326 views1 answer
How to set up git for github
Shell/Bash
0 vote331 views1 answer
Trimspace in bact file
Shell/Bash
0 vote336 views2 answers
Powershell get serial number
Shell/Bash
9 votes328 views1 answer
Xóa 1 thu vien trong laravel 8
Shell/Bash
0 vote306 views1 answer
Install Sublime in Linux (Stable)
Shell/Bash
0 vote303 views1 answer
Linux edit crontab via script
Shell/Bash
0 vote316 views1 answer
How to convert ui to py pyside2
Shell/Bash
0 vote344 views1 answer
Powershell convert text 20MB to bytes
Shell/Bash