44 lines
859 B
Bash
Executable File
44 lines
859 B
Bash
Executable File
#!/usr/bin/env bash
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set -o errexit
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set -o nounset
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set -o pipefail
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if [[ "${1-}" =~ ^-*h(elp)?$ ]]; then
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echo 'Usage: ./script.sh arg-one arg-two
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This is an awesome bash script to make your life better.
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'
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exit
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fi
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if [[ "${TRACE-0}" == "1" ]]; then
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set -o xtrace
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fi
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cd "$(dirname "$0")"
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main() {
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# no connection
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state=0
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# test each interfaces for connectivity
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for iface in $(ls /sys/class/net/ | grep -v lo); do
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if [[ $(cat /sys/class/net/$iface/carrier 2>/dev/null) = 1 ]]; then
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echo -e "$iface \e[32mconnected\e[0m"
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state=1
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else
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echo -e "$iface \e[31mno_connection\e[0m"
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fi
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done
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# check summary
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if [[ $state -eq 0 ]]; then
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echo -e " \n\e[31mno connection\e[0m" > /dev/stderr;
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exit -1;
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else
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echo -e "\n\e[32mconnected\e[0m" > /dev/stdout;
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exit 0;
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fi
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}
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main "[email protected]"
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