Encrypt data in Linux/Unix

[ Thanks to donadony for this link. ]

"Encrypt:

[root@localhot ~]# gpg -c testfile.txt
Enter passphrase:

Repeat passphrase:

[root@localhot ~]# cat test
bla blabla
[root@localhot ~]# cat test.gpg

+c)Û;6¢!> ¾çõÀ`É#+° cÍÐ*b×á­w´¡Rbùßåì"

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