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in Technique[技术] by (71.8m points)

hash - strange hashing match all the time in bash scripting

    #!/bin/bash
    guess=`awk '{print $1}' password`
    try=$(echo "$guess" | sha256sum)
    testing="f2ca1bb6c7e907d06dafe4687e579fce76b37e4e93b7605022da52e6ccc26fd2"
    if [" $try "==" $testing "]
    then
        echo "the password is $guess"
    else
        echo "password not found"
    fi

So i am trying to get first line value from password file, and using sha256sum to get the hashing value, and compare the hashing value with the value that i already given, if they are the same, it means i found the password. However, when i try to run it, it became crazy, if i set first value in password to be "abc", the output will be "the password is abc", if i set the value to be "hello", output will be hello. It doesn't make sense.

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by (71.8m points)
  if [" $try "==" $testing "]

this code has syntax errors, i should not make space between " and $try,$testing also i need to give space between " and ==.

Corrected:

  if [ "$try" == "$testing" ]

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