Running a script with if statement example in bash 你是否注意到,当数字为偶数时,脚本会告诉你,但当数字为奇数时,脚本不会显示任何内容? 让我们使用 else 来改进这个脚本。 使用if else 语句 现在我在前面的脚本中添加了一条else语句。这样,当你得到一个非零模数(因为奇数不能除以 2)时,它将进入else块。
If-statement-Bash-Script-Example if-else Statement 除了普通的 if 语句之外,我们还可以用 else 块扩展 if 语句。基本思想是,如果语句为真,则执行 if 块。如果语句为假,则执行 else 块。 Syntax : if [ condition_command ] then command1 command2 …….. last_command else command1 command2 …….. ...
You may have noticed that you don’t get any output when you run theroot.shscript as a regular user. Any code you want to run when an if condition is evaluated to false can be included in an else statement as follows: #!/bin/bash if [ $(whoami) = 'root' ]; then echo "You a...
#!/bin/bash read -p "Enter the number: " num mod=$(($num%2)) if [ $mod -eq 0 ]; then echo "Number $num is even" else echo "Number $num is odd" fi 1. 2. 3. 4. 5. 6. 7. 8. 让我们用相同的数字再次运行它: Running a bash script that checks odd even number 正如你...
/bin/bash read -p "Enter the number: " num mod=$(($num%2)) if [ $mod -eq 0 ]; then echo "Number $num is even" else echo "Number $num is odd" fi Let's run it again with the same numbers: As you can see, the script is better as it also tells you if the number is...
SQL中的case when then else end用法 一:简单用法: 1.第一种写法: 2.第二种写法 两个运行结果一样: 有一个需要注意的问题,Case函数只返回第一个符合条件的值,剩下的Case部分将会被自动忽略 二:分组 表数据: sql语句: 运行结果: 表数据: sql语句: 运行结果:......
Q. How do I use the if-elif-else statement in a bash script to handle multiple conditions? Theif-elif-elsestatement in Bash allows you to handle multiple conditions sequentially, as in the example below. if [ condition1 ]; then
[ s1 ] (true if s1 is not empty, else false) [ -n s1 ] (true if s1 has a length greater then 0, else false) [ -z s2 ] (true if s2 has a length of 0, otherwise false) Example Script number.sh #!/bin/bash echo -n “Enter a number 1 < x < 10: " ...
a=5b=10c=15if[$a-gt$b];thenecho'a is greater than b'elif[$a-gt$c];thenecho'a is greater than c'elseecho'a is not greater than either b or c'fi# Output:# 'a is not greater than either b or c' Bash Copy In this example, the script first checks if ‘a’ is greater tha...
问bash脚本中的If / Else语句问题EN<c:choose> <c:when test="${requestScope.newFlag== '1'...