if [ -e "/path/to/file" ]; then echo "File exists." else echo "File does not exis...
About “bash if file does not exist” issue You might want to check if file does not exist in bash in order to make the file manipulation process easier and more streamlined. This is the job of the test command, which can check if a file exists and its type. ...
/bin/bashFILE=$1if[ -f$FILE];thenecho"File$FILEexists."elseecho"File$FILEdoes not exist."fi 如何仅检查文件不存在? test命令(这里写作[)有一个 "not" 逻辑运算符,即感叹号!: if[ ! -f /tmp/foo.txt ];thenecho"File not found!"fi
所以不能使用file命令来判断文件是否存在. manfile 返回值项如下: RETURN CODE file returns 0 on success, and non-zero on error. If the file named by the file operand does not exist, cannot be read, or the type of the file named by the file operand cannot be determined, this is not be ...
if [[ -f "$FILE" ]];then echo "$FILE exist" fi 如果要根据文件是否存在执行不同的操作,只需使用if / then结构: FILE=/etc/resolv.conf if [ -f "$FILE" ];then echo "$FILE exist" else echo "$FILE does not exist" fi 注:在处理名称中包含空格的文件时,请始终使用双引号以避免出现问题。
例3:判断文件是否存在,若存在,则输入“ok”;若不存在,则输入“file not exist”。 代码语言:javascript 复制 if[-f aaa.txt];then echo"ok"elseecho"file not exist"fi 例4:输入当前文件夹的一级子目录中文件名字 代码语言:javascript 复制 #将ls的结果保存到变量CUR_DIR中CUR_DIR=`ls`# 显示ls的结果 ...
if [ -f $file ] then echo "File exists" else echo "File does not exist" fi # Check if a command is successful if ls then echo "Command succeeded" else echo "Command failed" fi ``` 通过使用if-else语句,用户可以根据不同的条件执行不同的操作。这使得Bash脚本更加灵活和强大,可以满足各种不...
ls /path/to/file exit_code=$? if [ $exit_code -eq 0 ]; then echo “Command executed successfully” else echo “Command failed with exit code: $exit_code” fi “` 在这个例子中,我们使用了ls命令来示范。脚本首先执行ls命令,然后使用$?获取ls命令的返回值并将其赋值给变量exit_code。接下来,...
要判断Bash中是否存在常规文件,可以使用以下方法: 1. 使用`[ -e FILE ]` 或者 `[[ -e FILE ]]` 来检查文件是否存在。例如: ```bash if [ -e myf...
TestFile1 does not exist or is empty. 向文件添加一些内容,然后再测试一次: [student@studentvm1 testdir]$ File="TestFile1" ; echo "This is file $File" > $File ; if [ -s $File ] ; then echo "$File exists and contains data." ; else echo "$File does not exist or is empty." ...