You can also use the Exists() method from the .NET System.IO.Directory class, which requires a full path: 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/p...
-s FILE FILE exists and has a size greater than zero 如果文件存在且文件大小大于零,则返回真 -e FILE FILE exists 如果文件存在,则返回真 在shell中通过test指令测试文件是否为空的示例脚本如下: #! /bin/sh if test -s file.txt; then echo "hi" else echo "empty" fi 在shell中,test指令还有另外...
bash check_file_exists"/path/to/file"result=$?if[$result-eq0];then echo"操作成功"elseecho"操作失败,错误代码:$result"fi 最佳实践 明确定义成功和错误代码:为成功和各种错误条件明确定义返回代码。 使用描述性错误代码:使用不同的非零值来区分不同类型的错误。 在文档中记录返回代码:在脚本或函数的文档中...
if[ -z$CURRENT_HOUR];thenecho"CURRENT_HOUR parameter is empty."echo"usage : sh$0A|B Config Cur_Hour"exit1fiif[ $? -eq 0 -a -s${tmp_file}];thenrsync -aP${tmp_file}${zabbix_file}else/opt/monitor/sendsms.sh"zabbix Connection to the platform database(machine) failed""songwanbo"ex...
在Ansible中,可以使用if else语句来根据条件执行不同的操作。而在执行这些操作时,可以使用shell脚本来实现。 具体使用Ansible if else结构的示例代码如下: 代码语言:txt 复制 - name: Example playbook hosts: all tasks: - name: Check if a file exists ...
/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 "...
source /bigdata/application/flink/executeJob/financial/init/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 ${filename} /data/interface/buyun/${...
check for files that have offline attribute and set it them to archive Check if .txt file is empty Check if a process is running check if a process or service is hanging/not responding? Check if a text file is blank in powershell check if computer exist in ou Check if drive exists,...
swap file "*.swp" already exists! [O]pen Read-Only, (E)dit anyway, (R)ecover, (D)elete it, (Q)uit, (A)bort: 原因: 使用vim编辑文件实际是先copy一份临时文件并映射到内存给你编辑, 编辑的是临时文件, 当执行:w后才保存临时文件到原文件,执行:q后才删除临时文件。
This is helpful when writing Korn shell scripts because it gives you another way to check for errors. Here's a different way to see if the /etc/passwd file exists: #Begin CodePASSWORD_FILE="/etc/passwd"ls–l$PASSWORD_FILE> /dev/null 2>&1 ...