为什么我在bash shell脚本中出现此错误

Question

我一直在尝试为我的bash shell脚本添加一个选项，有人做了“-r”我推送到git服务器但是我收到以下错误

mirror.sh: line 8: conditional binary operator expected
mirror.sh: line 8: syntax error near `-e'
mirror.sh: line 8: `if [[ "$1" -e "-r" ]];then'

下面是我的bash脚本：

#!/bin/bash
cd /home/joe/Documents/sourcecode/mirror.git
git svn rebase

#
# if option -r then push to master
#
if [[ "$1" -e "-r" ]];then
    git push origin master
fi

Answer 1

尝试：

if [[ "$1" = "-r" ]];then

或

if [[ "$1" == "-r" ]];then

Answer 2

怎么样：

if [[ "$1" == "-r" ]]; then

-e在您的示例测试中是否存在文件。这是错误的。

Answer 3

如上所述-e确实是file existence test。我想您想要比较使用-eq的值和想法，但这是arithmetic binary operator。您需要==将字符串比较为

if [[ "$1" == "-r" ]];