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 subdirectory, you can use the trick I demonstrate below - where I check if ...
#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...
[root@web-server01~/script]# vim xx.sh #!/bin/bash #auto install apache #By author rivers 2021-09-27 #Httpd define path variable FILES=httpd-2.2.31.tar.bz2 LES_DIR=httpd-2.2.31 URL=http://mirrors.cnnic.cn/apache/httpd/ PREFIX=/usr/local/apache2/ function Apache_install () { #...
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,...
if [ -e $IMG_DIR/${NEWVM}.img ]; then echo "File exists." #镜像已存在 exit 68 fi echo -en "Creating Virtual Machine disk image...\t" #提示正在创建... qemu-img create -f qcow2 -b $IMG_DIR/.${BASEVM}.img $IMG_DIR/${NEWVM}.img &> /dev/null #创建前端盘 echo ...
If you can enter commands into the shell, you can write shell scripts (also known as Bourne shell scripts). A shell script is a series of commands written in a ...
scriptDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" # Check if the symmetric key file exists in the same directory symmetricKeyPath="$scriptDir/.sim.key" if [ ! -f "$symmetricKeyPath" ]; then echo "SymmetricKey file was not found in the same directory as the scrip...
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....
# 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) ...