lib/functions.sh


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#!/bin/sh

function has()
{
    local command_name="${1}"; shift;

    set +o errexit
    hash "${command_name}" > /dev/null 2>&1;
    if [ 0 -eq ${?} ];
    then
        set -o errexit
        return 0;
    fi

    set -o errexit
    return 1;
}