PS E:\temp> [System.IO.Directory]::Exists('E:\temp\') True PS E:\temp> [System.IO.Directory]::Exists('E:\temp') True If you want to check if the directory the script/program is currently in contains a subdirect
#if[ -d $jump_dir ]thenecho"The $jump_dir directory exists"cd $jump_dirlselseecho"The $junp_dir directory does not exist"fi 执行该脚本,结果如下: 2.2 检查对象是否存在(文件或目录) -e比较允许你的脚本代码在使用文件或者目录前先检查它们是否存在。 #!/bin/bash #Checkifeither a directory or...
if [ -d "/some/directory" ]; then log_message "Directory exists." else log_message "Directory does not exist." && exit 1 fi log_message "Script finished." 这个脚本将日志写入文件并打印在终端,帮助你记录脚本的执行情况。 3.3 定时任务和Cron 结合cron,你可以定期运行Shell脚本,实现自动化。例如,...
echo-e"\033[32m 新建rc-local.service...\033[0m"if[ ! -f $RCLOCALSERDIR ];then touch $RCLOCALSERDIR fi fiif[[ $? -eq0]];then echo-e"\033[32m 正在设置开机自动执行服务...\033[0m">RCLOCALSERDIR echo'[Unit]Description=/etc/rc.local Compatibility ConditionPathExists=/etc/rc.loca...
A shell script is a series of commands written in a file; the shell reads the commands from the file just as it would if you typed them into a terminal. 如果你能在 shell 中输入命令,你就能编写 shell 脚本(也称为 Bourne shell 脚本)。 shell 脚本是写在文件中的一系列命令;shell 会从文件...
tar.gz cd redis-5.0.7 install GCC if not exists yum install -y gcc-c++ make MALLOC=libc install echo "" echo "Redis Server Installation Finished!"fi 通过if[!-f"/usr/local/bin/redis-server"] 判断server 程序是否存在,若存在则认为 Redis 已安装。 采用源码编译的方式安装 Redis,已指定 5.0....
# Check if the symmetric key file exists in the same directory symmetricKeyPath="$scriptDir/.sim.key" if[ ! -f"$symmetricKeyPath"]; then echo"SymmetricKey file was not found in the same directory as the script." exit1 fi # Decrypt the data ...
# ScriptAlias /cgi-bin/ "/var/www/cgi-bin/" </IfModule> # # "/var/www/cgi-bin" should be changed to whatever your ScriptAliased # CGI directory exists, if you have that configured. # <Directory "/var/www/cgi-bin"> AllowOverride None Options None Require all granted </Directory> <...
exists("./aFile.txt")Check if a file exists rm("./myFile")Delete a file dirName("./path/file.txt")Return the directory name for a path __dirnameReturns the absolute path (directory) containing theentryscript (works inside of CommonJS or ES module) ...
--info-script=名称, --new-volume-script=名称 在每卷磁带最后运行脚本(隐含 -M) -L, --tape-length=NUMBER 写入 NUMBER × 1024 字节后更换磁带 -M, --multi-volume 创建/列出/解压多卷归档文件 --rmt-command=COMMAND 使用指定的 rmt COMMAND 代替 rmt --rsh-command=COMMAND 使用远程 COMMAND 代替 ...