'Else if'in bash scripting, often written as'elif', is used to check multiple conditions in your code. It is used with the syntax,if [firstStatement]; then... elif [secondCondition]; then... else. It’s a powerful tool that allows your scripts to make decisions based on various scen...
syntax error near unexpected token then 同理,还有很多出错信息 比如 syntax error near unexpected token fi 等都是这样引起的. 5 if 后面一定要跟上 then. 同理 elif 后面一定要跟上 then. 不然提示出错信息: syntax error near unexpected token else top BASH IF http://lhsblog01.blog.163.com/blog/s...
if 先来个实例： x=5; if [ $x = 5 ]; then echo 'x equals 5.'; else echo ...
The syntax of the if statement in Bash is: if first-test-commands; then consequent-commands; [elif more-test-commands; then more-consequents;] [else alternate-consequents;] fi Tests commands in the bash if statement, and bash elif clauses, are executed in order until one test succeed....
else echo "Values are NOT equal" fi 1. 2. 3. 4. 5. 6. 7. 8. 9. #!/bin/bash # declare integers NUM1=2 NUM2=1 if [ $NUM1 -eq $NUM2 ]; then echo "Both Values are equal" elif [ $NUM1 -gt $NUM2 ]; then echo "NUM1 is greater then NUM2" ...
A=10B=15if [ $A -eq $B ]then echo 'True'else echo 'False'fi 这是一个if条件判别语句(后面再细讲)。-eq判断运算符左右两边是否相等，如果是，则返回True，不然就返回False。关系判断运算符的基本格式是[ VAR1 OPERATOR VAR2 ]，用一个中括号括起来，这里有一点细节要注意，中括号和变量之间，...
syntax error near unexpected token `if' 发布于 2 月前 ✅ 最佳回答: 建议尝试以下方法#!/bin/basholdFiles.txt janeSearch=$(grep“jane”。/data/list.txt | cut-d'-f 1,3)搜索中的x;如果(测试-e~/$x);然后echo$x>>oldFiles.txtfi完成...
1 单分支if语句 if 判断条件; then statement1 statement2 ... fi 2 双分支的if语句: if 判断条件; then statement1 statement2 ... else statement3 statement4 ... fi 3 多分支的if语句: if 判断条件1; then statement1 ... elif 判断条件2; then ...
SyntaxError :invalid syntax 2019-09-28 16:27 −1)忘记在 if , elif , else , for , while , class ,def 声明末尾添加 :(导致 “SyntaxError :invalid syntax”)该错误将发生在类似如下代码中:12if spam== 42 print('Hello!')2... 澜七玖 ...
测试命令test用于形成一个表达式,结合条件判断语句if-else来判断。 例如可以判断某个文件是否存在,是否具备什么样的特性(可读吗?可写吗?可执行吗?块文件吗?)等等。 测试命令test有三种语法格式: test EXPRESSION [ EXPRESSION ] [[ EXPRESSION ]] 前两种是等价的,应该是没有区别的。注意EXPRESSION两边与中括号之间...