Question

在Linux上编写和测试的以下bash脚本在调用时甚至不会在OS X上启动。

#!/bin/bash
#
#   Some comments
#
#
function usage {
    echo ""
    echo "Usage: thisscript <SOURCE_DIRECTORY> <TARGET_DIRECTORY>"
    echo ""
    echo "<SOURCE_DIRECTORY>    the directory where the this "
    echo "              directory resides (default is /usr/dis)"
    echo ""
    echo "<TARGET_DIRECTORY>    the destination directory"
    echo ""
}

function notDarwin {
    mv -f $CUR_DIR/* $NEW_DIR/
    ln -sf "$NEW_DIR/ee/sc/scrp" "/usr/bin/scrp"
    ln -sf "$NEW_DIR/ee/etc/conffile.conf" "/etc/conffile.conf"
    exit 0
}

function isDarwin {
    mv -f $CUR_DIR/* $NEW_DIR/
    ln -sf "$NEW_DIR/ee/sc/scrp" "/usr/local/bin/scrp"
    cp "$NEW_DIR/ee/etc/conffile.conf" "/etc/conffile.conf"
    exit 0
}

#
#   =============================================
#   ================== MAIN =====================
#   =============================================
#

CUR_DIR=${1%/}
NEW_DIR=${2%/}

if [ ! -d "$CUR_DIR" ]; then
    echo ""
    echo "blah blah"
    usage
    exit 1
fi

if [ ! -d "$NEW_DIR" ]; then
    echo ""
    echo "The target directory supplied does not exist. Creating target directory $NEW_DIR"
    mkdir "$NEW_DIR"
    if [ $? -ne 0 ]; then
        echo "Could not create target directory. Exiting..."
        exit 1
    else
        echo "Directory $NEW_DIR created"
    fi
    echo ""
fi

UNAME=$(uname)
if [ $UNAME == "Darwin" ]; then
    isDarwin
else
    notDarwin
fi

使用bash 3.2

在macOS上以sudo bash script.sh "arg1" "arg2"运行时会抛出以下语法错误

'script.sh: line 7: syntax error near unexpected token `{
'script.sh: line 7: `function usage {

我对OS X很新，也许有一个我想念的问题。该脚本在Linux上运行良好......

由于

Answer 1

Linux和现代OS X期望行以LF（换行）字符结束。如果你的行以CR + LF结尾，那么你会遇到问题。

其他一些通用指针：

function语法是非标准的。您应该使用所有符合POSIX标准的shell支持的标准语法：

变化：

function usage {

为：

usage() {

我怀疑一切都会好起来。

顺便说一下，你应该引用所有的参数扩展（你错过了一对）。使用小写变量名称也被认为是一种好习惯，因为shell使用大写变量名称，因此存在与它们发生冲突的风险。

OSX中的bash语法错误

1 个答案: