mirror of
https://gitlab.com/shorewall/code.git
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a0b42400a3
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@5180 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
29 lines
372 B
Bash
Executable File
29 lines
372 B
Bash
Executable File
#!/bin/sh
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#
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# Determine if Interface is up
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#
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interface_is_up() {
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[ -n "$(ip link ls dev $1 | grep -e '[<,]UP[,>]')" ]
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}
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case $# in
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1)
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timeout=60
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;;
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2)
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timeout=$2
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;;
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*)
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echo "usage: $(basename $0) <interface> [ <timeout> ]"
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exit 2
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;;
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esac
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while [ $timeout -gt 0 ] && ! interface_is_up $1; do
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sleep 1
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timeout=$(( $timeout - 1 ))
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done
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