cbell@circe:~/tmp$ touch file.1 file.2
cbell@circe:~/tmp$ chmod 600 file.2
cbell@circe:~/tmp$ ls -l
total 0
-rw-r--r-- 1 cbell cbell 0 Oct 16 19:01 file.1
-rw------- 1 cbell cbell 0 Oct 16 19:01 file.2
cbell@circe:~/tmp$ for file in * ; do gzip $file ; done
cbell@circe:~/tmp$ ls -l
total 8
-rw-r--r-- 1 cbell cbell 27 Oct 16 19:01 file.1.gz
-rw------- 1 cbell cbell 27 Oct 16 19:01 file.2.gz
cbell@circe:~/tmp$