shell脚本之基本的数学逻辑比较

#!/bin/bash a=10 b=20 if [ $a -eq $b ] then echo "a==b" else echo "a!=b" fi if [ $a -ne $b ] then echo "a!=b" else echo "a==b" fi if [ $a -gt $b ] then echo "a>b" else echo "a<=b" fi if [ $a -lt $b ] then echo "a<b" else echo "a>=b" fi if [ $a -ge $b ] then echo "a>=b" else echo "a<b" fi if [ $a -le $b ] then echo "a<=b" else echo "a>b" fi 输出结果: a!=b a!=b a<=b a<b a<b a<=b