#!/bin/bash if [ -f "$1" ]; then echo "文件存在" else echo "文件不存在" fi 在上面的脚本中,$1表示第一个命令行参数,即文件路径。通过-f参数判断文件是否存在,如果存在则输出"文件存在",否则输出"文件不存在"。 使用示例: 代码语言:txt 复制 $ bash check_file.sh /path/to/file.txt 文件存...
This is the job of the test command, which can check if a file exists and its type. Since only the check is completed, the test command sets the exit code to 0 or 1 (either false or true, respectively) whether the test is successful or not. ...
在这个语法中：test -e "/path/to/file" 检查指定路径下的文件是否存在的命令。我们可以启动一个if...
In this tutorial, we learned how to check if the Linux system regards a file as executable.So, we used thetestcommand in the context of files, directories, and symbolic links. Next, we checked the file’s content to obtain more detailed information about its applicationby means of thefilec...
$ ls -la ~ |grep -i.bash_aliases # Check if file is available $ touch ~/.bash_aliases # Create empty alias file 打开.bashrc 文件并查找以下部分。此部分代码负责检查文件 .bash_aliases 是否存在于用户主目录下,并在启动新终端会话时加载它。
# Check if a file exists 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...
Check file types and compare values. Returns 0 if the condition evaluates to true, 1 if it evaluates to false. More information: https://www.gnu.org/software/bash/manual/bash.html#index-_005b_005b. - Test if a given variable is equal/not equal to the specified string: ...
7.1.1.3. 检查文件 第一个例子检查一个文件是否存在: anny ~> cat msgcheck.sh #!/bin/bash echo "This scripts checks the existence of the messages file." echo "Checking..." if [ -f /var/log/messages ] then echo "/var/log/messages exists." fi echo echo "...done." anny ~> ./msg...
-bash: /etc/profile: line 88: syntax error: unexpected end of file ”的问题, 方法——> check profile 文件最后一行是没有什么问题的,并且最后一行是87 行,没有88行,通过外部的命令sed -i "88d" /etc/profile 后仍然有问题。 后来通过与好的profile的对比,发现上面少了一行fi ,应该是有一个if 就有...
pathchk Check if file names are valid or portable. perl Perl 5 language interpreter. pgrep List process IDs matching the specified criteria among all the running processes. pidof Find process ID of a running program. ping Send ICMP ECHO_REQUEST to network hosts. pinky Lightweight finger. pkill...