Linux useful command

Swiss Army Knife of networking netcat is a versatile tool that is able to read and write data across TCP and UDP network . Combined with other tools and redirection it can be used in number of ways in your scripts. You will be surprised to see what y

Linux tar command usage */--> Linux tar command usage Table of Contents 1. Create an archive: 2. Create a gzipped archive: 3. List the files in an archive 4. Add a file or directory to an existing archive The frequently used tar command are listed as

目前在SUSE系统上可以不使用命令的全路径.但是在CentOS上必须使用.如何设置环境变量,没辙! 摘自:http://blog.csdn.net/wfdtxz/article/details/7283512 #whereis ifconfig ifco #whereis ifconfig ifconfig: /sbin/ifconfig /usr/share/man/man8/ifconfig.8.gz #echo $PATH /usr/local/bin:/usr/bin:/bin:/usr

learn Linux sed command 一.参考文档: 1. sed命令详解 http://qifuguang.me/2015/09/21/sed%E5%91%BD%E4%BB%A4%E8%AF%A6%E8%A7%A3/ 2. linux之sed用法 http://www.cnblogs.com/dong008259/archive/2011/12/07/2279897.html 3. Sed 的man手册参数详细解释(一) http://blog.csdn.net/imfinger/a

Linux:-bash: ***: command not found,系统很多命令都用不了,均提示没有此命令.突然之间linux很多命令都用不了,均提示没有此命令.这应该是系统环境变量出现了问题导致的. 解决办法: 先用:echo $PATH查看path是否含有:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin 如果没有 先用临时环境变量(重启后消失)#export PATH=$PATH:/usr/local/sbin:/

Xx_Introduction Linux shutdown command. Ax_Command Shutdown >shutdown >poweroff >init 0 >halt Reboot >reboot >init 6 Sleep >pm-hibernate Powersave >pm-powersave Standby >pm-suspend-hybrid 原文地址:https://www.cnblogs.com/enomothem/p

Key points: Shell种类,echo,$,基本语法,ls,man,su,sudo,grep,ps,clear,cp,rm,cat,more 参考:http://www.jb51.net/LINUXjishu/45329.html Shell的种类有很多种,例如CSH,Bourne Shell,Korn Shell.在现在的大多数Linux发行版中,默认的Shell一般都是Bourne again shell(bash). <echo> echo $SHELL 在Linux中,$符号

有时候新装的linux,使用命令jps,可是却提示找不到命令, -bash: jps: command notfound jps这条命令是在jdk下的bin目录下的一个可执行文件,查看一下jdk目录,发现有jps可执行文件,但是只是没有放在环境变量里面而已,环境变量可以通过etho$PATH命令查看. 所以就要自己加上去,以root身份 vi/etc/profile,然后在下面加一行 export PATH=usr/java/jdk160_05/bin:$PATH 保存退出,然后 source/

cd /  : entry root directory-----------------------[email protected]:/etc$ cd /[email protected]:/$ pwd cd ~  : entry user root directory----------------------[email protected]:/$ cd ~[email protected]:~$ pwd/home/tangym ls    : list all files.pwd  

Linux command ls basically use the file /etc/DIR_COLORS or /etc/DIR_COLORS.xterm to define the colors used, in terms of different types of terminal windows. You can change the definitions directly in these files to alter the colors to meet your expec