这些命令仅是在工作中的linux机器上运行正常的，在其他系统中正常与否有待验证。
ubuntu:sudoapt-getinstall
GNU/linux:sudoyuminstall
uname[-amnrsv][–help][–version]
显示系统信息http://zhidao.baidu.com/question/39995251
pwd
打印当前目录的路径
grepMemTotal/proc/meminfo
显示机器的内存
grepSwapTotal/proc/meminfo
thesizeoftheconfiguredswapspace
free
显示内存空间和交换空间
df-k/tmp
显示一个目录下硬盘空间，没有目录的话显示系统
cat/proc/version
查看linux安装的版本
echo$shell
查看当前shell
chmod777file/folder
修改文件（夹）权限
zip-rfilename.zipfolderfile
压缩文件到zip中
unzipfile_name.zip（-dfilepath）
gunzipfilename.cpio.gz
解压缩文件(到指定目录)
unzip*.ear
解压缩ear文件
zip与unzip命令详细参考http://www.cnblogs.com/chinareny2k/archive/2010/01/05/1639468.html
jar-cvf<<ear-name>><<fileswanttobeintheear>>
产生.ear文件
cp-r[f]folder1folder2
拷贝文件夹
suusername
切换用户
/usr/local/packages/aime/ias/run_as_root（command)
以root身份运行命令
/usr/local/packages/aime/ias/run_as_root"bash"切换到root
/usr/local/packages/aime/ias/run_as_root"vi/etc/passwd"
更改主目录，将/home/username替换为新设置的主目录
设置变量值：
csh:setANT_HOME="/scratch/user/Oracle/ant"
setPATH=${PATH}";/home/user"（根据我的经验仅当前shell有效）
bash:exportANT_HOME="/scratch/user/Oracle/ant"
exportPATH=$PATH:${ANT_HOME}/bin(跨shell也保留，但是只当前窗口有效)
ANT安装：http://ant.apache.org/manual/install.html
linux下bash中提示符颜色的设置
vi.bashrc
http://sxpspace.blogspot.com/2009/04/shell.html
netstat-nlp
查看端口情况p程序l监听socktesn数值的主机端口和用户
ADE中已经安装vnc后：
vncserver启动vnc
vncpassword设置密码
~/.vnc/xstartup里可以设置vncserver的属性
vncconfig-nowin&解决vnc主客机的相互复制问题
vncserver:1-geometry1280x960端口以及分辨率
- Start vnc by executing the "vncserver" script.vncserverVNC will prompt you for a password the first time this script is run. This is the password used to connect to the machine from a vncviewer. I suggest NOT using your SSO password because you may want to share the VNC session with someone.By default, the vncserver command starts the window manager not a KDE desktop. Therefore, kill the Xvnc process and then edit the command file as described in the following steps.ps -ef | grep Xvnc // find the Xvnc process id.kill <pid>cd .vnc (notice the DOT in the directory name)vi xstartup // edit the vnc startup script – emacs is also on the machine if you preferchange "twm &" to "startkde &" and save the fileExecute the "vncserver" command again. Now a KDE desktop will start (it takes a few minutes).Using vncviewer // TightVNC downloadconnect to the machine. You now have a remote desktop for development.If you run "konsole &" from the desktop, it gives you as many shells as you want in the same terminal window.
如果困难是堵砖墙，拍拍它说你还不够高。
