我正在编写简单的独立linux内核模块,它可以关闭LCD控制器。所以我在driver/video/amba-clcd.c中找到了一些函数:
/*
* Blank the screen if blank_mode != 0, else unblank. If blank == NULL
* then the caller blanks by setting the CLUT (Color Look Up Table) to all
* black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due
*
我想用at挂起我的笔记本电脑:
echo "systemctl suspend" | at now + 5 minutes
暂停不会发生,相反,我在/var/spool/mail/me中找到一封来自D3的邮件:
Failed to set wall message, ignoring: Interactive authentication required.
Failed to suspend system via logind: Interactive authentication required.
Failed to start suspend.target: Inter
我正在Ubuntu12.04上使用Tomcat 7.0.50服务器,我正在尝试用netbeans远程调试我的应用程序。因此,我在调试模式下启动了服务器,在catalina.sh中使用了以下行:
if [ "$1" = "jpda" ] ; then
if [ -z "$JPDA_TRANSPORT" ]; then
JPDA_TRANSPORT="dt_socket"
fi
if [ -z "$JPDA_ADDRESS" ]; then
JPDA_ADDRESS="8000
以前的帖子使用的信息是过时的Ubuntu伙伴18.04。
根据本文使用系统在挂起之前和之后运行脚本,我在/lib/systemd/system-sleep/中有这个脚本:
#!/bin/bash
#
# located in /lib/systemd/system-sleep/
# Created 4/2/19
exec 2> /tmp/systemd_suspend_test_err.txt
if [ "${1}" = "pre" ]; then
# Do the thing you want before suspend here
echo
参见 下面是这个答案 for a zsh解决方案
假设我的~/.bash_aliases中有以下内容需要在暂停系统之前进行确认:
function suspend()
{ #
echo "Please confirm/cancel system suspension:"
select confirmation in "confirm" "cancel"; do
case ${confirmation} in
confirm )
echo "System suspend
我有一个grep输出,如下所示:
Path to log files = /data/db2inst1/NODE0000/SQL00001/LOGSTREAM0000/
Database is in write suspend state = YES
Path to log files = /data/db2inst1/NODE0001/SQL00001/LOGSTREAM0001/
Database is in write suspend state = NO
我想编辑如下:
Node = NODE0000
Database is in write suspend state = YES
N
我想在Ubuntu上通过命令行(CLI)配置电源管理。
我已经熟悉了在Ubuntu 20.04上配置电源管理的GUI,如下所示:
Control Center > Hardware >
Power Management
On AC Power tab
Actions
Put computer to sleep when inactive for: Never
Display
Put display to sleep when inactive for: Never
General tab