cross-platform-pbcopy-pbpaste.sh

#!/usr/bin/env bash

# from https://github.com/westurner/dotfiles/tree/develop/scripts

### pbcopy
# Shim to support something like pbcopy on Linux

function pbcopy {
    __IS_MAC=${__IS_MAC:-$(test "$(uname -s)" == "Darwin" && echo 'true')}

    if [ -n "${__IS_MAC}" ]; then
        cat | /usr/bin/pbcopy
        exit
    else
        # copy to selection buffer AND clipboard
        cat | xclip -i -sel c -f | xclip -i -sel p
        exit
    fi
}

if [ -n "${BASH_SOURCE}" ] && [ "$BASH_SOURCE" == "$0" ]; then
    pbcopy
fi

#!/usr/bin/env bash

# Shim to support something like pbpaste on Linux
__IS_MAC=${__IS_MAC:-$(test $(uname -s) == "Darwin" && echo 'true')}
if [ -n "${__IS_MAC}" ]; then
    /usr/bin/pbpaste ${@}
    exit
else
    xclip -selection clipboard -o
    exit
fi

Thanks :) Added to my dotfiles.