simple encrypt/decrypt files and encodes/decodes into base64 for storage in password managers

crypt.sh

#!/bin/bash

# Encrypts / decrypts a file using a password
# Usage: ./crypt.sh -e <file>
#        ./crypt.sh -d <file>
#        ./crypt.sh -d <file in base64 encoding>
#        ./crypt.sh -d <base64 text> # note that this puts the encrypted text in your .bash_history / .zsh_history


if [ "$1" == "-e" ]; then
    shift
    gpg -c --no-symkey-cache "$1"
    echo "file encrypted to $1.gpg and it base64 encoded is as follows (you can place this text in your password manager)"
    base64 -i "$1.gpg" 
    exit 0
elif [ "$1" == "-d" ]; then
    shift

    if [ -f "$1" ]; then # if file exists
        contents=$(< "$1")
        { # try to decode base64
            decoded=$(printf "$contents" | base64 -d 2> /dev/null)
        } || {
            decoded="$contents"
        }
    else
        decoded=$(printf "$1" | base64 -d 2> /dev/null)
    fi

    error=0
    echo -n "$decoded" > /tmp/gpg_stdin
    {
        gpg --no-symkey-cache -d /tmp/gpg_stdin
    } || {
        error=1
    }
    rm -f /tmp/gpg_stdin
    exit $error
fi