Bash：如何检查目录是否存在？
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Bash: how to check if directory exists?
提问by meallhour
I have written following if-else statementto check if directory1or directory2exists or not
我已经写了下面的if-else statement检查directory1或directory2存在与否
if [ -d /opt/directory1 ] || [ -d /opt/directory2 ]; then
echo "SUCCESS"
else
echo "FAil
fi
However, on some servers I am getting an error
但是，在某些服务器上，我收到错误消息
[: /opt/directory1: binary operator expected
All servers are using bash
所有服务器都在使用 bash
回答by Ronan Boiteau
Using Bash, this will give you the behavior you're looking for:
使用 Bash，这将为您提供您正在寻找的行为：
if [[ -d /opt/directory1 ]] || [[ -d /opt/directory2 ]] ; then
echo "SUCCESS"
else
echo "FAIL"
fi
Note the usage of -don both conditions.
注意-d在这两种情况下的用法。
回答by Ronan Boiteau
Simple Shell script give you an answer.
简单的Shell脚本给你答案。
#!/bin/bash
DIR=""
if [ $# -ne 1 ]
then
echo "Usage: ##代码## {dir-name}"
exit 1
fi
if [ -d "$DIR" ]
then
echo "$DIR directory exists!"
else
echo "$DIR directory not found!"
fi
