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29 lines
1.1 KiB
Bash
29 lines
1.1 KiB
Bash
#!/bin/bash
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#WARNING: Used for core functionality in setup.sh
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# DO NOT rename the script and test changes well!
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# Folders always ends with an tailing '/'
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_SCRIPT="$(readlink -f "${0}" 2> /dev/null)"
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_CORE_SCRIPTS="$(dirname ${_SCRIPT:?"Missing SCRIPT"} 2> /dev/null)/"
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_CIS_ROOT="$(dirname ${_CORE_SCRIPTS:?"Missing CORE_SCRIPTS"} 2> /dev/null)/"
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_OVERRIDE_DOMAIN_FILE="${_CIS_ROOT:?"Missing CIS_ROOT"}overrideOwnDomain"
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# Wenn OVERRIDING_DOMAIN_FILE enhält lesbare Daten
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grep '[^[:space:]]' "${_OVERRIDE_DOMAIN_FILE:?"Missing OVERRIDE_DOMAIN_FILE"}" &> /dev/null \
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&& echo "WARNING: Domain has been overridden by: ${_OVERRIDE_DOMAIN_FILE}" > /dev/stderr \
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&& cat "${_OVERRIDE_DOMAIN_FILE}" \
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&& exit 0
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_BOOT_HOSTNAME="$(hostname -b)"
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# There has to be one dot at least.
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echo "${_BOOT_HOSTNAME}" | grep -v '\.' &> /dev/null \
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&& echo "It was impossible to find out the domain of this host, please prepare this host first." > /dev/stderr \
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&& exit 1
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#Removes shortest matching pattern '*.' from the begin to get the domain
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echo "${_BOOT_HOSTNAME#*.}" \
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&& exit 0
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