[SOLVED] What's the equivalent of sudo in msys?

Issue

I'm writing a cross-platform shell script that's supposed to work on Unix, Cygwin, and msys. In my shell script I need to perform actions with elevated privileges. On Unix you would do this via sudo, and on Cygwin via something like cygstart --action=runas. What's the equivalent for msys?

All my Googling so far has only turned up this, which isn't practical from a shell script since you have to interact with the GUI.

Solution

I think I may have found a solution using PowerShell:

escape()
{
    RESULT="$1"
    RESULT="${RESULT/\'/\\\'\'}" # replace ' with \''
    RESULT="${RESULT/\"/\\\\\\\"}" # replace " with \\\"
    echo "''$RESULT''" # PowerShell uses '' to escape '
}

sudo()
{
    ESCAPED=()
    for ARG in "$@"
    do
        ESCAPED+=($(escape "$ARG"))
    done

    SHELL_PATH=$(cygpath -w $SHELL)
    PS_COMMAND="[Console]::In.ReadToEnd() | Start-Process '$SHELL_PATH' '-c -- \"${ESCAPED[*]}\"' -Verb RunAs"
    cat /dev/stdin | powershell -NoProfile -ExecutionPolicy Bypass "$PS_COMMAND"
}

Definitely a bit Extremely hackish, but it's better than nothing. (Or Batch files, for that matter.)

Answered By - James Ko

Answer Checked By - Gilberto Lyons (WPSolving Admin)