/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 vote288 views2 answers
Couldn't be accessed by user '_apt'. - pkgAcquire::Run
Shell/Bash
0 vote283 views1 answer
View in linux
Shell/Bash
0 vote279 views1 answer
Error: pathspec 'new_brach' did not match any file(s) known to git
Shell/Bash
4 votes325 views3 answers
Nano go to line
Shell/Bash
0 vote260 views1 answer
Git deinit repo
Shell/Bash
0 vote278 views1 answer
Réinstaller interface graphique debian
Shell/Bash
2 votes274 views1 answer
Compress folder in tar.gz unix
Shell/Bash
0 vote299 views1 answer
How to revert to previous kernel ubuntu
Shell/Bash
0 vote280 views1 answer
Rhythmbox
Shell/Bash
0 vote288 views1 answer
Cant install cython buildozer
Shell/Bash