Please post code in [code] blocks. Also capitalize the personal pronoun "I" to make your post legible, and put double spaces between sentences.
Look at "which openssl". Binary files should not be in /etc. Which distro are you using?
The command is probably located in /usr/bin/openssl or /usr/local/bin/openssl depending on whether you installed openssl from a package or compiled from source.
I tried out these commands (similar to yours) and in the end, "file test.tar" verified that the decoded file was a tarball.
openssl enc -bf -in test.tar -out test.tar.enc -k 111
openssl enc -bf -d -in test.tar.enc -out test.tar -k 111