bash

usefullcmd.sh

//rename
rename 's/pattern/new_string/'  <files>
//upper-to-lower
for i in *; do mv $i `echo $i | tr [:upper:] [:lower:]`; done
//get apache user name
 APACHEUSER=`ps aux | grep -E '[a]pache|[h]ttpd' | grep -v root | head -1 | cut -d\  -f1`
 //set permission
 sudo chmod g+rw "$APACHEUSER allow delete,write,append,file_inherit,directory_inherit" ./logs