方案1:

在終端上可以使用下列命令完成hostname的修改

sudo hostname your-new-name

使用文字編輯工具，如vi修改/etc/hostname，使其包含你修改的hostname名字

sudo gedit /etc/hostname

127.0.1.1     your-old-hostname

方案2：

參考方案1，首先進行/etc/hostname和/etc/hosts的修改，修改完成後，使用service服務是hostname生效。

sudo /etc/init.d/hostname.sh start

[email protected]:~$ more /etc/init.d/hostname.sh
#! /bin/sh
### BEGIN INIT INFO
# Provides:          hostname
# Required-Start:
# Required-Stop:
# Should-Start:      glibc
# Default-Start:     S
# Default-Stop:
# Short-Description: Set hostname based on /etc/hostname
# Description:       Read the machines hostname from /etc/hostname, and
#                    update the kernel value with this value.  If
#                    /etc/hostname is empty, the current kernel value
#                    for hostname is used.  If the kernel value is
#                    empty, the value 'localhost' is used.
### END INIT INFO

PATH=/sbin:/bin

. /lib/init/vars.sh
. /lib/lsb/init-functions

do_start () {
        [ -f /etc/hostname ] && HOSTNAME="$(cat /etc/hostname)"

        # Keep current name if /etc/hostname is missing.
        [ -z "$HOSTNAME" ] && HOSTNAME="$(hostname)"

        # And set it to 'localhost' if no setting was found
        [ -z "$HOSTNAME" ] && HOSTNAME=localhost

        [ "$VERBOSE" != no ] && log_action_begin_msg "Setting hostname to '$HOSTNAME'"
        hostname "$HOSTNAME"
        ES=$?
        [ "$VERBOSE" != no ] && log_action_end_msg $ES
        exit $ES
}

case "$1" in
  start|"")
        do_start
        ;;
  restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
  stop)
        # No-op
        ;;
  *)
        echo "Usage: hostname.sh [start|stop]" >&2
        exit 3
        ;;
esac
 

方案3

當然，你可以自己編寫shell指令碼來完成此項工作，change_hostname.sh指令碼的內容如下：

#!/usr/bin/env bash
NEW_HOSTNAME=$1
echo $NEW_HOSTNAME > /proc/sys/kernel/hostname
sed -i 's/127.0.1.1.*/127.0.1.1\t'"$NEW_HOSTNAME"'/g' /etc/hosts
echo $NEW_HOSTNAME > /etc/hostname
service hostname start
su $SUDO_USER -c "xauth add $(xauth list | sed 's/^.*\//'"$NEW_HOSTNAME"'\//g' | awk 'NR==1 {sub($1,"\"&\""); print}')"
 

sudo ./change_hostname.sh new-hostname