diff options
| -rwxr-xr-x | setup-hostname.in | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/setup-hostname.in b/setup-hostname.in index f97f487..c551de7 100755 --- a/setup-hostname.in +++ b/setup-hostname.in @@ -5,6 +5,20 @@ PREFIX= . $PREFIX/lib/libalpine.sh +usage() { + cat <<__EOF__ +usage: setup-hostname [-h] [-n hostname] + +Sets the system hostname. + +options: + -h Show this help + -n Specify the hostname to set +__EOF__ + exit 1 +} + + # http://en.wikipedia.org/wiki/Hostname#Restrictions_on_valid_host_names valid_hostname() { # check length @@ -24,10 +38,22 @@ valid_hostname() { return 0 } +while getopts "hn:" opt; do + case $opt in + h) usage;; + n) HOSTNAME="$OPTARG";; + esac +done + + while true; do - HOST=`hostname` - echon "Enter system hostname (short form, e.g. 'foo') [$HOST]: " - default_read HOST `hostname` + if [ -n "$HOSTNAME" ]; then + HOST="$HOSTNAME" + else + HOST=`hostname` + echon "Enter system hostname (short form, e.g. 'foo') [$HOST]: " + default_read HOST `hostname` + fi if valid_hostname "$HOST"; then break fi |