shell练习1详解程序员

ls -l |sed -n '2,$p'| awk ' 
{hash[$3]=hash[$3]"""/n/t"$9}  
END{ 
for (user in hash)  
    print user"/n", hash[user]"/n" 
}'

ls -l | sed -n '2,$p' | awk '{print $3,$9}'| sort | awk ' 
$1==name { 
print "/t",$2 
} 
$1!=name{ 
name=$1; 
print $1;print "/t" $2 
}'