if stat "/path/to/file" >/dev/null 2>&1; then echo "File exists." else echo "File...
18. -d FILEFILE exists and is a directory-e FILEFILE exists-f FILEFILE exists and is a regular file-h FILEFILE exists and is a symbolic link (same as -L)-r FILEFILE exists and is readable-s FILEFILE exists and has a size greater than zero-w FILEFILE exists and is writable-x FI...
I have written my test code based on Bash Shell: Check File Exists or Not. #!/bin/bash echo "*** TRY TO INIT INFER ***" # Clone Infer INFER_GIT_PATH="https://github.com/facebook/infer.git" echo "> Try to Clone Infer from ${INFER_GIT_PATH}" git clone ${INFER_GIT_PATH} I...
Example 3: File Check #!/bin/bash file_path="/path/to/file.txt" if [ -f "$file_path" ] then echo "File exists." else echo "File does not exist." fi Compound Condition You can combine multiple conditions using logical operators like && (AND) and || (OR). Here’s an example: ...
if [ -f $file ] then echo "File exists" else echo "File does not exist" fi # Check if a command is successful if ls then echo "Command succeeded" else echo "Command failed" fi ``` 通过使用if-else语句,用户可以根据不同的条件执行不同的操作。这使得Bash脚本更加灵活和强大,可以满足各种不...
既然是Linux系统，那么使用命令行形式去查找肯定是最快最直接的方法，虽然现在有很多连接工具可以提供查找...
请考虑以下Bash函数。 echo "check if variable with name $1 exists"} assert_var "FOO"我们的期望是,应该检测变量FOO,同时也不存在BAR。为此,我需 浏览0提问于2020-07-01得票数0 回答已采纳 2回答 以未实例化的变量为条件 我是Bash脚本的新手,对C-type语言有更多的经验。我已经编写了一些带有条件的脚本...
&& echo "exists"-d file# 判断文件存在,且该文件是一个目录-e file# 判断文件存在,和 -a 等价-f file# 判断文件存在,且该文件是一个普通文件(非目录等)-r file# 判断文件存在,且可读-s file# 判断文件存在,且尺寸大于0-w file# 判断文件存在,且可写-x file# 判断文件存在,且执行-N file# 文件上...
How to check if a variable exists or is “null”? How to check if a file exists? How to check if a directory exists? How to check if a command succeeds or failed? How to do string comparison and check if a string equals to a value? How to check if a string is in an array?
-a file # 判断文件存在,如 [ -a /tmp/abc ] && echo "exists" -d file # 判断文件存在,且该文件是一个目录 -e file # 判断文件存在,和 -a 等价 -f file # 判断文件存在,且该文件是一个普通文件(非目录等) -r file # 判断文件存在,且可读 ...