read -p "Enter the number: " num if [ $num -lt 0 ]; then echo "Number $num is negative" elif [ $num -gt 0 ]; then echo "Number $num is positive" else echo "Number $num is zero" fi 让我运行它来涵盖这里的所有三种情况: Running a script with bash elif statement 用逻辑运算符...
if [ $# -lt "$MINPARAMS" ] then echo echo "This script needs at least $MINPARAMS command-line arguments!" fi echo exit 0 运行代码: bash test30.sh 1 2 10 The name of this script is "test.sh". The name of this script is "test.sh". Parameter #1 is 1 Parameter #2 is 2 -...
Running a bash script that checks odd even number 正如你所看到的,该脚本更好,因为它还告诉你该数字是否为奇数。 使用elif(否则如果)语句 这是一个检查给定数字是正数还是负数的脚本。在数学中,0 既不是正数也不是负数。该脚本也检查了这一事实。 复制 #!/bin/bash read -p "Enter the number: " num...
代码如下: if [ condition ] then action elif [ condition2 ] then action2 . . . elif [ condition3 ] then else actionx fi 以上"elif" 形式将连续测试每个条件,并执行符合第一个 真 条件的操作。如果没有条件为真,则将执行 "else" 操作,如果有一个条件为真,则继续执行整个 "if,elif,else" 语句...
[zexcon@fedora ~]$ ./learnToScript.sh numberTwelve variable is equal to 12 你所看到的是if语句的第一行,它在检查变量的值是否真的等于12。如果是的话,语句就会停止,并发出numberTwelve is equal to 12的回显,然后在fi之后继续执行你的脚本。如果变量大于12的话,就会执行elif语句,并在fi之后继续执行。当...
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
In this example, the script first checks if ‘a’ is greater than ‘b’. If it’s not, it moves on to the ‘elif’ statement to check if ‘a’ is greater than ‘c’. If neither condition is met, it executes the ‘else’ statement, which in this case, prints ‘a is not greate...
bash基础 if elif 多条件判断 for循环 1、写一个脚本,使用ping命令探测172.16.250.1-172.16.250.254之间的所有主机的在线状态; 在线的主机使用绿色显示; 不在线的主使用红色显示; #!/bin/bash #filename:testIp.sh #Author:jian #Date:2017-10-30
elif [ $1 == status ]; then if [ -e $FilePath ]; then echo "Script is running." elif [ ! -e $FilePath ]; then echo "Script is stopped." fi else echo "Usage:$0 {start | restart | stop | status}" exit 7 fi 1.
if 条件1; then 分支1; elif 条件2; then 分支2; elif 条件3; then 分支3; ... else 分支n; fi bash中如何做测试: test:比较表达式,测试运算.任何命令的执行结果也可以做测试对于命令状态返回值0为真,其余都为假 格式有三种:test EXPRESSION