python -c "print(‘+‘*100)"

head -c 100 /dev/zero |awk ‘gsub(/./,"+")‘

perl -le "print(q(+)x100)"

println("+"*100)

输出50个=的方法

1. echo "" | sed ‘:a; s/^/=/; /=\{50\}/b; ta‘
   

2. sed ‘:a;s/^.\{0,49\}$/&=/;ta‘ <<<""
   

3. awk ‘BEGIN{OFS="=";NF=50;print}‘
   

4. awk ‘BEGIN{while(n++<50)printf "=";print""}‘
   

5. seq -s‘a‘ 50 | tr -d ‘[0-9]‘
   

6. for i in `seq 50`; do echo -n =; done
   

7. yes "=" | sed ‘50q‘ | tr -d ‘\n‘
   

8. yes "=" | head -n 50 | tr -d "\n"
   

9. perl -le ‘print "=" x 50‘
   

10. python -c "print ‘=‘*50"
    

11. printf "%0050d\n" 0 | tr "0" "="
    

12. eval printf ‘%.0s=‘ {1..50}
    

13. str=$(printf "%*s" "50"); echo ${str// /=}

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shell 输出100个+方法总结