Ubuntu

tools

Ubuntu 16.04

Oracle Java

禁用桌面（GUI）启动，改成命令行界面（CUI）

sudo apt-get remove lightdm

如果需要恢复桌面（GUI）

sudo apt-get install lightdm

内存占用太高

通过 system-monitor 检查哪些进程内存占用太高，很有可能是内存泄漏，一般处理是重新该应用

unity-panel-service

kill $(pgrep unity-panel-ser)

ubuntu 14.04 拼音输入法修复

现象：当打算输入“nihao（你好）”的时候，变成了“niha o（你哈 o）”

解决办法：在终端输入如下，然后立即生效。

ibus-daemon -drx

问题参照：http://forum.ubuntu.org.cn/viewtopic.php?f=48&t=462077

ubuntu 14.04 默认字体貌似是楷体了，怎么解决

sudo apt-get remove fonts-arphic-ukai
sudo apt-get remove fonts-arphic-uming

来源：http://tieba.baidu.com/p/2860116269

修改为文本启动

sudo vim /etc/default/grub

将 GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash” 改为 GRUB_CMDLINE_LINUX_DEFAULT=”text”

启动的时候就不会显示 splash 了。

将 #GRUB_TERMINAL=console 改为 GRUB_TERMINAL=console

参照：http://wiki.centos.org/HowTos/SetUpSamba

ubuntu 下如何查看硬盘硬件信息

sudo lshw -c storage -c disk

ssmtp

参照http://www.nixtutor.com/linux/send-mail-with-gmail-and-ssmtp/

#
# Config file for sSMTP sendmail
#
# The person who gets all mail for userids < 1000
# Make this empty to disable rewriting.
#root=ci@spolo.org

# The place where the mail goes. The actual machine name is required no
# MX records are consulted. Commonly mailhosts are named mail.domain.com
#mailhub=smtp.spolo.org:25

# Where will the mail seem to come from?
#rewriteDomain=

# The full hostname
#hostname=sp-storage

# Are users allowed to set their own From: address?
# YES - Allow the user to specify their own From: address
# NO - Use the system generated From: address
#FromLineOverride=YES

# mail.spolo.org
#mailhub=smtp.spolo.org:25
#AuthUser=ci@spolo.org
#AuthPass=sp12345678
#UseTLS=NO
#UseSTARTTLS=NO
#FromLineOverride=YES

# gmail.com
root=username@gmail.com
mailhub=smtp.gmail.com:587
hostname=uge.superpolo@gmail.com
UseSTARTTLS=YES
AuthUser=uge.superpolo
AuthPass=uge2011spp
FromLineOverride=YES

ubuntu 14.04 install flash plugin for chrome

sudo apt-get install pepperflashplugin-nonfree

mount ssh as filesystem

fusermount: failed to open /etc/fuse.conf: Permission denied

http://blog.tordeu.com/?p=50

restart vino server

$ pkill vino
$ export DISPLAY=:0.0
$ /usr/lib/vino/vino-server &

Chrome(Chromium) using xdg-open to open external application

Append line to this file: ~/.local/share/applications/mimeapps.list

x-scheme-handler/gluehome=gluehome.desktop

Create this file /usr/share/applications/gluehome.desktop to call application.

Install new NIC

ref

After installed hardware.

Show current config, only one interface for old card.

chenyang@ubuntu:~$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto enp0s3
iface enp0s3 inet dhcp

Find the name of the card

chenyang@ubuntu:~$ dmesg |grep -i network
[    4.264991] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI
[    4.340735] FUJITSU Extended Socket Network Device Driver - version 1.0 - Copyright (c) 2015 FUJITSU LIMITED
[    5.888334] e1000 0000:00:03.0 eth0: Intel(R) PRO/1000 Network Connection
[    7.260713] e1000 0000:00:08.0 eth1: Intel(R) PRO/1000 Network Connection
[   18.598914] audit: type=1400 audit(1468462899.196:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=753 comm="apparmor_parser"
[   18.598923] audit: type=1400 audit(1468462899.196:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=753 comm="apparmor_parser"

Two card

[    5.888334] e1000 0000:00:03.0 eth0: Intel(R) PRO/1000 Network Connection
[    7.260713] e1000 0000:00:08.0 eth1: Intel(R) PRO/1000 Network Connection

But name changed (Predictable Network Interface Names and name rule)

chenyang@ubuntu:~$ dmesg | grep -e eth1 -e tulip
[    7.254168] e1000 0000:00:08.0 eth1: (PCI:33MHz:32-bit) 08:00:27:29:a5:5d
[    7.260713] e1000 0000:00:08.0 eth1: Intel(R) PRO/1000 Network Connection
[    7.296480] e1000 0000:00:08.0 enp0s8: renamed from eth1

But only one used.

chenyang@ubuntu:~$ ifconfig
enp0s3    Link encap:Ethernet  HWaddr 08:00:27:6a:1c:2b
          inet addr:10.1.234.245  Bcast:10.1.255.255  Mask:255.255.192.0
          inet6 addr: fe80::a00:27ff:fe6a:1c2b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1477 errors:0 dropped:0 overruns:0 frame:0
          TX packets:167 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:213839 (213.8 KB)  TX bytes:24788 (24.7 KB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:152 errors:0 dropped:0 overruns:0 frame:0
          TX packets:152 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:11248 (11.2 KB)  TX bytes:11248 (11.2 KB)

Modify /etc/network/interfaces to add new card

auto enp0s8
iface enp0s8 inet dhcp

restart network interface

sudo /etc/init.d/networking restart

Ubuntu 16.04 安装英文版之后无法输入中文

因为ibus-pinyin没有安装导致的。

sudo apt-get install ibus-pinyin

ibus-setup 打开“IBus Preferences > Input Method”，然后点击“Add”按钮，再点“Chinese > Pinyin”

再打开“Text Entry”，点击“+”按钮，添加“Chinese (Pinyin) (IBus)”选项。确保“Input sources to use:”里面第一个是“English (US)”，第二个是“Chinese (Pinyin) (IBus)”。

How To Add Right-Click Convert and Resize Images in Nautilus

sudo add-apt-repository ppa:atareao/nautilus-extensions
sudo apt-get update
sudo apt-get install nautilus-image-tools
nautilus -q

To convert many PNG: select many images > Image Tools > convert > a window appear > select destination format e.g. JPEG > OK

refs: http://www.ubuntubuzz.com/2015/10/how-to-add-right-click-convert-and-resize-images-nautilus.html

apt-get proxy

sudo su
export http_proxy=http://127.0.0.1:8080
export https_proxy=https://127.0.0.1:8080
apt-get install ...

CPU temperature monitor

sudo apt-get install psensor