Читал. Долго думал.
# check glibc
check_glibc () {
ICONV=`iconv --version | sed -e '2,$d'`
if [ $? -ne 0 ]; then
echo "no-iconv"
else
ICONVVER=`echo "$ICONV" | awk '{print $4}'`
GLIBCMAJOR=`echo $ICONVVER | cut -d'.' -f1`
GLIBCMINOR=`echo $ICONVVER | cut -d'.' -f2`
if [ \( $GLIBCMAJOR -ge $MIN_GLIBCMAJOR \) -a \( $GLIBCMINOR -ge $MIN_GLIBCMINOR \) ]; then
echo "valid-glibc"
else
echo "invalid-glibc"
fi
fi
}