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$ gawk '{if($1 == 3) print $1" == 3 "; else print $1,"!= 3"}' data4 22.4.2 while 语句 基本格式: while (condition) { statement } while里面还可以放break和continue。用起来跟C语言一样 例子: xcy@xcy-virtual-machine:~/shell/22zhang$ cat data5 100 110 120 170 180 190 300 ...
For both directives, if the condition following the “if statement” is false, the preprocessor does not pass any of the program text between the #if and the next #endif to the compiler. If you plan to look at any C code, you’d better get used to this. 条件语句。你可以使用#ifdef、...
-xTrue if the file is an executable Examples In this section, we'll see couple of examples of the 'if/elif/else' statement. Exampe #1: #!/bin/bash # b.sh if [ "$#" -gt 0 ] then echo "There are $# args!" fi if [ "$1" = "arg1" ] then echo "argument 1 is $1" fi...
131 ie a "while" in a do-statement or an "else" in an if-statement, like 132 this: 133 134 do { 135 body of do-loop 136 } while (condition); 137 138 and 139 140 if (x == y) { 141 .. 142 } else if (x > y) { 143 ... 144 } else { 145 ... 146 } 147 148...
The steps in this section represent the typical process to install the latest IoT Edge version on a device that has internet connection. If you need to install a specific version, like a pre-release version, or need to install while offline, follow theOffline or specific version installationste...
If the IoT Edge for Linux on Windows VM was deployed without a static IP, the IP address might change across Windows host OS restarts or network changes. Make sure you're using the correct IP address for the IoT Edge for Linux on Windows VM every time you want to establish a remote co...
WGCLOUD基于微服务springboot架构开发,是轻量高性能的分布式监控系统,核心采集指标包括:cpu使用率,cpu温度,内存使用率,磁盘容量,磁盘IO,硬盘SMART健康状态,系统负载,连接数量,网卡流量,硬件系统信息等。支持监测服务器上的进程应用、文件防篡改、端口、日志、DOCKER容器、数据库、数据表等资源。支持监测服务接口API、数通设...
Simple if statement: Syntax: if [ condition ] then action fi Example: read a name from the user read -p "enter your name :" name if [ $name = "Sunny" ] then echo "Your name is Sunny" fi Note that the instruction a=b is an assignement and a = b is a comparison instruction...