find / home -size + 512k 512k greater than the search file
find / home -size -512k search file is less than 512k
find / home -size 2m 2M check the file size is equal to
# -print the searched file to standard output
# -exec command {} \; - found in the command file execution operation, and {} \; space between
find / sbin -perm +700 | ls -l command is wrong
find / sbin -perm +700 | xargs ls -l it means is that