Bash: 重复字符串

 

1. 函数
   

   #!/bin/bash
   
   function b(){
       for i in `seq 1 $2`;do
           echo -n "$1"
       done
   }
   
   b = 1

    

2. printf
   

   printf '=%.0s' {1..10}

   printf %10s | tr ' ' =

    

3. seq tr 
   

   seq -s= 10 | tr -d '[:digit:]'

    

4. for
   

   for b in {1..10}; do echo -n =;done

    

5. head tr
   

   head --bytes 10 < /dev/zero | tr '\0' =

    

6. paste
   

   yes = | head -10 | paste -s -d '' -

    

7. {str// /repr}
   

   str=$(printf %10s)
   
   echo ${str// /@}