Syntax error: Bad for loop variable 原因:代码对于标准bash而言没有错,因为Ubuntu为了加快开机速度,用dash代替了传统的bash,是dash在捣鬼。 解决方法:取消dash dpkg-reconfigure dash 出现弹框,选择NO 参考原文详情,解决报错: http://blog.csdn.net/yf210yf/article/details/9206185 3、实战:批量执行php文件 - ...
shell编译问题 在ubuntu下执行shell脚本if [ $(CHIP_TYPE) == Y ]; 总打印/bin/sh: 1: [: Y: unexpected operator 错误原因在于ubuntu默认的sh是连接到dash的,又因为dash跟bash的不兼容所以出错了.解决方法就是: 1. 执行sudodpkg-reconfiguredash选NO将ubuntu默认的shell链接的 海思3516的sdk相关问题汇总 1....
错误如下: Syntax error: Bad for loop variable 分析: 从 ubuntu 6.10 开始,ubuntu 就将先前默认的bash shell 更换成了dash shell;其表现为 /bin/sh 链接倒了/bin/dash而不是传统的/bin/bash。 allen@allen-lql ~/workspace/script $ ls -l /bin/sh lrwxrwxrwx 1 root root 4 Aug 12 14:29 /bin/...
Method 2: Bash For Loop using C like syntax The second form of the for loop is similar to the for loop in “C” programming language, which has three expressions (initialization, condition and updation). for (( expr1; expr2; expr3 )) do command1 command2 .. done In the above bash...
Bash For Loop Syntax As mentioned earlier, thefor loopiterates over a range of values and executes aset of Linux commands. For looptakes the following syntax: for variable_name in value1 value2 value3 .. n do command1 command2 commandn ...
9 for (( i=1; i<=$nu; i=i+1 )) 10 do 11 sum=$(($sum+$i)) 12 done 13 echo "The result of 1+2+...+$nu is ==>$sum" 结果用sh -n检查语法时居然报错: sh14.sh: 9: Syntax error: Bad for loop variable 仔细看了又看没有发现错误啊。。。
First, let's talk about the basic structure of aforloop, and then we'll get into some examples. The basic syntax of aforloop is: for <variable name> in ;do <some command> $<variable name>;done; Thevariable namewill be the variable you specify in thedosection and will contain the ...
Bash While Loop Another iteration statement offered by the shell programming language is the while statement. Syntax: while expression do commands done In the above while loop syntax: while, do, done are keywords Expression is any expression which returns a scalar value ...
Below is the syntax of the for loop statement for your reference. for (<Initial iterator value>; <Condition>; <Code to repeat>) { <Statement list> } As you can see in the syntax above, the PowerShell for loop statement can be broken down into four placeholders that you must know. Th...
shell脚本forloops&whileloops题解 一、for loops for 变量名 in 列表;do 循环体 done 执行机制: 依次将列表中的元素赋值给“变量名”; 每次赋值后即执行一次循环体; 直 到列表中的元素耗尽,循环结束 列表生成方式: (1) 直接给出列表 (2) 整数列表:...