如何使用setenv在bash中设置环境变量？

setenv

function setenv() { export \"$1=$2\"; }

. your_file

# Mimic csh/tsch setenv
function setenv()
{
    if [ $# = 2 ]; then
        export $1=$2;
    else
        echo \"Usage: setenv [NAME] [VALUE]\";
    fi
}

setenv () {
    if (( $# == 0 )); then
        env
        return 0
    fi

    if [[ $1 == *[!A-Za-z0-9_]* ]]; then
        printf \'setenv: not a valid identifier -- %s\\n\' \"$1\" >&2
        return 1
    fi

    case $# in
        1)
            export \"$1\"
            ;;
        2)
            export \"$1=$2\"
            ;;
        *)
            printf \'Usage: setenv [VARIABLE [VALUE]]\\n\' >&2
            return 1
    esac
}