user@host ~ $ figlet Moo. > mu
user@host ~ $ cat mu
 __  __
|  \/  | ___   ___
| |\/| |/ _ \ / _ \
| |  | | (_) | (_) |
|_|  |_|\___/ \___(_)

user@host ~ $ cat /root/.ssh/id_ecdsa
cat: /root/.ssh/id_ecdsa: Permission denied
user@host ~ $ cat /root/.ssh/id_ecdsa > /dev/null
cat: /root/.ssh/id_ecdsa: Permission denied
user@host ~ $ cat /root/.ssh/id_ecdsa 2> /dev/null
user@host ~ $ md5sum dir/*
862a24df285d12b2ad908bf57a417747  dir/a
66b4d2409c4eb9a8f728cd80f798ce9d  dir/b
md5sum: dir/c: Permission denied
md5sum: dir/d: Permission denied
f417af6f1fc98b99efb549bf55b18440  dir/e
md5sum: dir/f: Permission denied
58136e3d09ad6793df038e11081355ef  dir/g
user@host ~ $ md5sum dir/* > stdout 2> stderr
user@host ~ $ cat stdout
862a24df285d12b2ad908bf57a417747  dir/a
66b4d2409c4eb9a8f728cd80f798ce9d  dir/b
f417af6f1fc98b99efb549bf55b18440  dir/e
58136e3d09ad6793df038e11081355ef  dir/g
user@host ~ $ cat stderr
md5sum: dir/c: Permission denied
md5sum: dir/d: Permission denied
md5sum: dir/f: Permission denied
user@host ~ $ echo Oh, > e
user@host ~ $ echo where >> e
user@host ~ $ echo "have you been," >> e
user@host ~ $ echo -n "Billy Boy, " >> e
user@host ~ $ echo "Billy Boy?" >> e
user@host ~ $ cat e
Oh,
where
have you been,
Billy Boy, Billy Boy?