在GNOME

Question

我如何才能登錄我的登錄/註銷和屏幕鎖定/解鎖我想創建一個日誌某些事件等的日誌文件：

• 登錄到GNOME
• 日誌屏幕
• 解鎖屏幕
• 註銷

我的計劃是寫在後臺作爲GNOME會話的子進程運行的腳本。它將從追加「登錄」開始，監視屏幕鎖定/解鎖，並在收到SIGHUP（表示會話結束）時附加「LOGOUT」。

我寫了一個腳本[1]，如果我在shell中啓動它，但它很笨重。我希望這個程序在後臺運行 - 我不想記得每次登錄時都要啓動它。

有人可以指向正確的方向嗎？

[1]腳本：

#!/bin/bash 
# param $1: type, in: 
#  ["SCREEN_LOCKED", 
#  "SCREEN_UNLOCKED", 
#  "LOGIN", 
#  "LOGOUT", 
#  "SIGINT", 
#  "SIGTERM"] 
function write_log { 
    if [ -z $1 ]; then 
    1="unspecified" 
    fi 
    echo -e "$1\t$(date)" >> "$LOG" 
} 

function notify { 
    echo "$@" >&2 
} 

function show_usage { 
    notify "Usage: $0 login <address> <logfile>" 
    notify "Parameters:" 
    notify " login: You must use the string 'login' to avoid seeing this message." 
    notify " <logfile>: File to store logs." 
    notify "" 
    notify "This script is designed to go in the bashrc file, and be called in the" 
    notify "form of: $0 login '$USER@$(uname -n)' >>/path/to/logfile &" 
    notify "" 
} 

if [ "$#" -eq 0 ]; then 
    show_usage 
    exit 1 
fi 
if [ "$1" != "login" ]; then 
    show_usage 
    notify "Error: first parameter must be the string 'login'." 
    exit 1 
fi 
LOG="$2" 
if [ -z "$LOG" ]; then 
    notify "Error: please specify a logfile." 
    exit 1 
elif [ -f "$LOG" ]; then 
    # If the logfile exists, verify that the last action was a LOGOUT. 
    LASTACTION=$(tail -1 "$LOG" | awk '{print $1}') 
    if [ $LASTACTION != "LOGOUT" ]; then 
    notify "Logfile '$LOG' exists but last action was not logout: $LASTACTION" 
    exit 1 
    fi 
else 
    # If the file does not exist, create it. 
    touch "$LOG" || (notify "Cannot create logfile: '$2'" && exit 1) 
fi 

# Begin by logging in: 
write_log "LOGIN" 

# Handle signals by logging: 
trap "write_log 'LOGOUT'; exit" SIGHUP 
trap "write_log 'INTERRUPTED_SIGINT'; exit 1" SIGINT 
trap "write_log 'INTERRUPTED_SIGTERM'; exit 1" SIGTERM 

# Monitor gnome for screen locking. Log these events. 
dbus-monitor --session "type='signal',interface='org.gnome.ScreenSaver'" | \ 
    (
    while true; do 
     read X; 
     if echo $X | grep "boolean true" &> /dev/null; then 
     write_log "SCREEN_LOCKED" 
     elif echo $X | grep "boolean false" &> /dev/null; then 
     write_log "SCREEN_UNLOCKED" 
     fi 
    done 
) 

Answer 1

我也有這樣一個腳本，它運作良好，在啓動目錄桌面文件啓動它：

$ cat ~/.config/autostart/watcher.sh.desktop 

[Desktop Entry] 
Type=Application 
Exec=/home/<username>/hg/programs/system/watcher/watcher.sh 
Hidden=false 
X-GNOME-Autostart-enabled=true 
Name[de_DE]=watcher 
Name=watcher 
Comment[de_DE]= 
Comment=