An xclip mockup forDebian OS

xclip-mockup-debian.sh

#== From: Max Nikulin <manikulin@gmail.com>
#== Subject: Re: xclip - how to use without a graphics display for testing on Github workflows
#== Date: Sun, 10 Sep 2023 23:48:28 +0700
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#== Resent-Date: Sun, 10 Sep 2023 16:49:01 +0000 (UTC)
#
# On 10/09/2023 16:44, Tom Browder wrote:
# > On Sat, Sep 9, 2023 at 21:06 Max Nikulin wrote:
# >
# >> You can create a mock-up and use it instead of real xclip binary.
# >
# > Sounds interesting, Max, can you show the code?
#
# Unless you need to test subtle issues like
#
#    https://github.com/astrand/xclip/issues/20
#    "Not closing stdout when setting clipboard from stdin"
#
# faced by e.g. tmux users, something simple should be enough:

#!/bin/sh -eu
: "${XCLIP_MOCK_FILE:=$HOME/.xclip-mock}"

while [ $# -gt 0 ]; do
	case "$1" in
		-i|-in)
			;;
		-o|--out) exec cat -- "$XCLIP_MOCK_FILE"
			;;
		-selection|-target) shift
			;;
		*) # FIXME xclip treats all unknown options at any position as files
			break
			;;
	esac
	shift
done
exec cat -- "$@" >"$XCLIP_MOCK_FILE"