Check if directory exists not working I have a textfile (qrs.txt) which contains dir names (one per line) and on my server in the same directory as the script I have those folders with corresponding names from the text file. This is my script: #!/bin/bashwhilereadp;doif[ ! -d"$...
existSync()方法同步检查给定目录的存在。...如果您更喜欢使用异步检查,请改用fs.access()方法。 此方法将路径作为输入并测试用户的权限。...让我们看下面的示例,该示例使用fs.access()检查给定目录是否存在: const fs = require('fs'); // directory to check if exists const ...
Linux如何使用if判断目录是否存在方法如下: 1、脚本中使用if判断目录是否存在的方法 #!.../bin/bash if [ -d "c" ];then echo "目录c存在" else echo "目录不存在" fi 2、简便写法 #!.../bin/bash [ -d "c" ] && ech...
9.1. Simple Bash if/else statement Please note the spacing inside the [ and ] brackets! Without the spaces, it won't work! #!/bin/bash directory="./BashScripting" # bash check if directory exists if [ -d $directory ]; then echo "Directory exists" else echo "Directory does not exists...
When writing Shell scripts, you may find yourself in a situation where you need to perform an action based on whether a file exists or not. In Bash, you can use the test command to check whether a file exists and determine the type of the file....
请检查/home/usuario/Build_WRF/DATA/GFS_72是否确实存在，以及目录/home/usuario/Build_WRF/DATA/是否...
/bin/bash # Testing nested ifs # testuser=NoSuchUser #设置变量用户名 # if grep $testuser /etc/passwd #查询 then #状态码0,执行 echo "The user $testuser exists on this system." else #否则,执行 echo "The user $testuser does not exist on this system."...
Example Bash script: if getent passwd "$username" >/dev/null; then echo "User $username exists" else echo "User $username does not exist" fi Replace the variable$usernamewith the name of the user you want to check. If you want to check if a username does not exist, you can negate ...
使用if-then语句 如果命令的退出状态是0(成功执行命令),将执行then后面的所有命令。 如果命令的退出状态是0以外的其他值,那么then后面的命令将不会执行,bash shell会移动到脚本的下一条命令。 #!/bin/bash # testing theifstatementifdate then echo"it worked"fi ...
```bash if [ -f test.txt ]; then echo "File test.txt exists." else echo "File test.txt does not exist." fi ``` 上面的脚本首先使用“-f”选项检查文件是否存在,如果文件存在,则输出“File test.txt exists.”;如果文件不存在,则输出“File test.txt does not exist.”。通过这种方式可以在程...