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uname -a: Linux server1.tuhinhossain.com 5.15.0-163-generic #173-Ubuntu SMP Tue Oct 14 17:51:00 UTC
2025 x86_64 

uid=1002(picotech) gid=1003(picotech) groups=1003(picotech),0(root)  

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/usr/src/linux-headers-5.15.0-163/tools/testing/selftests/ir/   drwxr-xr-x
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Viewing file:     ir_loopback.sh (525 B)      -rwxr-xr-x

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4

if [ $UID != 0 ]; then
	echo "Please run ir_loopback test as root [SKIP]"
	exit $ksft_skip
fi

if ! /sbin/modprobe -q -n rc-loopback; then
        echo "ir_loopback: module rc-loopback is not found [SKIP]"
        exit $ksft_skip
fi

/sbin/modprobe rc-loopback
if [ $? -ne 0 ]; then
	exit
fi

RCDEV=$(grep -l DRV_NAME=rc-loopback /sys/class/rc/rc*/uevent | grep -o 'rc[0-9]\+')

./ir_loopback $RCDEV $RCDEV
exit