我剛剛重新啟動了 Ubuntu,但我忘記了虛擬機器在後台打開(任務欄上有一個最小化的圖示)。是否可以透過以下方式配置 Ubuntu:使用者自訂應用程式正在運行,然後在重新啟動/關閉之前發出警告?我使用的是16.04版本。
答案1
介紹
下面的腳本監視所有或使用者定義的應用程式的存在,如果發現存在 - 將阻止系統透過圖形對話框關閉(透過命令列關閉不會受到影響,因為這是系統應用的任務知道自己在做什麼的管理員)。
有 3 個選項:
-a
監控任何開啟的應用程式。
-c
以圖形方式選擇一個應用程式
-s
在命令列上為應用程式指定 .desktop 文件
-h
列印語法和選項清單。
該-c
選項僅適用於一個會話,您只需單擊一個視窗並對其進行監視即可。-a
和選項-s
適合新增為在系統登入時啟動的自動啟動條目。-s
選項可以與完整路徑或部分路徑一起使用,例如/usr/share/applications/firefox.desktop
或firefox.desktop
都同樣可以接受。
腳本來源
腳本來源可以在這裡或我的GitHub。使用者可以透過複製整個儲存庫或使用來取得腳本
wget https://raw.githubusercontent.com/SergKolo/sergrep/master/safe_shutdown.sh && chmod +x safe_shutdown.sh
命令僅取得腳本本身。
#!/usr/bin/env bash
#
###########################################################
# Author: Serg Kolo , contact: [email protected]
# Date: May 14th , 2016
# Purpose: Ensure that user closes all or specific
# running windows and exits without any work
# lost
# Written for: http://askubuntu.com/q/771227/295286
# Tested on: Ubuntu 14.04 LTS
###########################################################
# Copyright: Serg Kolo , 2016
#
# Permission to use, copy, modify, and distribute this software is hereby granted
# without fee, provided that the copyright notice above and this permission statement
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
ARGV0="$0"
ARGC=$#
_notify_user()
{
# Close the shutdown dialog and display
# graphical popup which will ask user's shutdown
# confirmation. If user clicks OK , we shutdown.
# If cancel - no action.
qdbus com.canonical.Unity \
/com/canonical/Unity/Session \
com.canonical.Unity.Session.CancelAction
if zenity --question --title='WARNING!' \
--text="You have running apps. Shutdown anyway ?" \
2> /dev/null
then
qdbus com.canonical.Unity \
/com/canonical/Unity/Session \
com.canonical.Unity.Session.Shutdown
fi
}
_get_running_apps()
{
# Gets list of .desktop files for each
# running app
qdbus org.ayatana.bamf \
/org/ayatana/bamf/matcher \
org.ayatana.bamf.matcher.RunningApplicationsDesktopFiles
}
_check_any_running()
{
# Among the running apps there's always one
# .desktop file, which is compiz.desktop.
# We want to know if there's anything besides that
if [ $( _get_running_apps | wc -l ) -gt 1 ];
then
_notify_user
fi
}
_check_specific_running()
{
# Get list of running apps and see if
# the .desktop file we got is on the list
if _get_running_apps | grep -q "$1"
then
_notify_user
fi
}
_select_app()
{
# xwininfo provides nice interface which allows selecting
# a window. The rest is just simple parsing and passing
# around the XID of the app.
notify-send 'Select a window you would like to monitor '
XID=$(xwininfo -int | awk '/xwininfo: Window id/{print $4}')
APP=$(qdbus org.ayatana.bamf \
/org/ayatana/bamf/matcher \
org.ayatana.bamf.matcher.ApplicationForXid $XID )
qdbus org.ayatana.bamf \
"$APP" org.ayatana.bamf.application.DesktopFile
}
_print_usage()
{
cat <<EOF
safe_shutdown.sh [-a | -c |-s DESKTOP_FILE | -h ]
Options:
-a Monitor any open applications.
-c Graphically select an app
-s specify .desktop file for app on command line
-h print this text
Copyright Serg Kolo , 2016
EOF
}
parse_args()
{
if [ $ARGC -eq 0 ] ; then
printf "%s: No option specified\n Usage:\n" ${ARGV0##*/}
_print_usage
exit 1
fi
local OPTIND opt
while getopts "acs:" opt
do
case ${opt} in
a) FUNCTION="_check_any_running"
break
;;
c)
DESK_FILE=$(_select_app )
FUNCTION=" _check_specific_running $DESK_FILE "
break
;;
s) DESK_FILE=${OPTARG}
FUNCTION=" _check_specific_running $DESK_FILE "
break
;;
h) _print_usage
exit 0
;;
\?)
echo "Invalid option: -$OPTARG" >&2
exit 1
;;
esac
done
shift $((OPTIND-1))
}
main()
{
# Basic idea is to let user chose what to do
# then monitor dbus for appropriate signal
# Once the RebootRequested signal is received
# then perform appropriate checks ( for a specific
# or all apps ).
local FUNCTION
parse_args "$@"
dbus-monitor --profile \
"interface='com.canonical.Unity.Session',type=signal" |
while read -r line;
do
case "$line" in
*RebootRequested*) $FUNCTION ;;
esac
done
}
main "$@"