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 ...
#!/bin/bash if [ $# -eq 0 ]; then echo "No arguments provided. Usage: $0 filename" exit 1 fi filename="$1" if [ -f "$filename" ]; then echo "$filename exists." else echo "$filename does not exist." fi 在运行这个脚本时,你可以传递一个文件名作为参数: ./check_file.sh ...
The same rules about trailing "/" apply to ScriptAlias # directives as to Alias. # 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 "/va...
/bin/bashfunction filecount {# 检查目录是否存在if [ -d "$1" ]; then# 目录存在,计算文件数echo $(ls -l "$1" | grep "^-" | wc -l)return 1else# 目录不存在,返回0return 0fi}dir="$1"count=$(filecount $dir)if [ $? = 1 ]thenecho "Dir $dir exists,files:$count"elseecho "...
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 ...
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...'does not exist' : 'exists'}`); }); 查看本指南,以了解有关在Node.js应用程序中读写文件的更多信息。 11.8K10 c...
finit.sh $1 filename=/data/interface/buyun/${date_effective}.txt.gz echo "zip file =:"${filename} if [ -f ${filename} ]; then echo "zip file is exists, start to unzip " gunzip -d ${filename} /data/interface/buyun/${date_effective}.txt else echo "zip file is not exists "...
if[ ! -d $BAKDIR ];then mkdir -p $BAKDIR else echo This is $BAKDIR exists ,please exit …. sleep 2 exit fi ###mysqldump backup mysql /usr/bin/mysqldump -u$MYSQLUSR -p$MYSQLPW -d $MYSQLDB >/data/backup/mysql/`date +%Y-%m-%d`/www_db.sql ...
(If a file being written to does not already exist, it is created. If a file being written to already exists, the data it previously contained is overwritten unless the `-a’ option is used.) 格式:tee -a file 输出到标准输出的同时,追加到文件file中。如果文件不存在,则创建;如果已经存在...
echo "File $filename exists."; cp $filename $filename.bak else echo "File $filename not found."; touch $filename fi; echo "File test complete." 结束符双分号;;,case语句分支的结束符。demo3read Keypress case "$Keypress" in [[:lower:]] ) echo "Lowercase letter";; [[:upper:]] ...