until 循环
格式:
until condition do command done
#输出0~9
#!/bin/bash a=0 until [ ! $a -lt 10 ] do echo $a a=`expr $a + 1` done
结果输出:
格式:
until condition do command done
#输出0~9
#!/bin/bash a=0 until [ ! $a -lt 10 ] do echo $a a=`expr $a + 1` done
结果输出: