Which  of  the  following  commands  will  ncrease  the  contiguous  free  space  of  a  file  system  without  having to add additional partitions（）

Given the following scripts， what output would be generated（）
usr/local/bin/scriptl   
#!/usr/bin/ksh   
VARl=red   
export VARl=green   
VARl=blue   
/usr/local/bin/script2   
ARl=yellow  
/usr/local/bin/script2    
#!/bin/ksh  
echo "The sky is ${VAR1}."

A user is complaining that they ran out of paging space. 
Which of the following will address this and  provide best performance（）