Ubuntu下各种实用命令-自己整理贴

1.Ubuntu下安装pthread

$sudo apt-get install glibc-doc

$sudo apt-get installmanpages-posix manpages-posix-dev

2.立即重启

$sudo shutdown -r now

3.返回父目录

$cd ..
4.列表显示当前目录内所有文件

$ll

5.安装某个软件，比如vim

$sudo apt-get install vim

6.更新

$sudo apt-get update

$sudo apt-get upgrade

7.

sudo rm /var/crash/*

At times this may happen when you have error while updating which cannot be resolved or something else.

8.使用sudo apt-get update时提示如下：

W: GPG error: http://us.archive.ubuntu.com oneiric-updates Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://us.archive.ubuntu.com oneiric-backports Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://security.ubuntu.com oneiric-security Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>

W: GPG error: http://us.archive.ubuntu.com oneiric-updates Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://us.archive.ubuntu.com oneiric-backports Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://security.ubuntu.com oneiric-security Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>

解决方法：

sudo apt-get clean
cd /var/lib/apt
sudo mv lists lists.old
sudo mkdir -p lists/partial
sudo apt-get clean
sudo apt-get update