shell:循环

 

1. C风格
   

   #!/bin/env sh
   
   function mat(){
           for ((p=0;p<10;p++))
           do
                   echo $p
           done
   }
   
   mat

    

2. {start..end..step}
   

   #!/bin/env sh
   
   function mat(){
           for p in {10..1..2}
           do
                   echo $p
           done
   }
   
   mat

    

3. seq start step stop
   

   #!/bin/env sh
   
   function mat(){
           for p in `seq 10 -2 1`
           do
                   echo $p
           done
   }
   
   mat