linux shell中的单引号与双引号的区别(看完就不会有引号的疑问了) " "(双引号)与 ' '(单引号)的区别    你在shell prompt(shell 提示)后面敲打键盘.直到按下enter的时候,你输入的文字就是command line(命令行)了,然后shell才会以进程方式执行你所提交的命令.但是,你又可知道:你在command line输入的每一个文字,对shell来说,有什么类别之分呢? 简单而言,command line的每一个charactor(字符)分为

Notes on The Linux Command Line (by W. E. Shotts Jr.) edited by Gopher 感觉博客园是不是搞了什么CSS在里头--在博客园显示效果挺蛋疼的...这本书相当棒,建议一读 File, file systems and commands ls -a(all) -d(directory) -h(human-readable) less (show file content) FHS /bin: Contains binaries (pr

Yunduan CUI graphical user interfaces make easy tasks easy, while command line interfaces make difficult tasks possible Part 1 学习Shell 1. 什么是 Shell? Shell 是用户与操作系统交流的程序,它读取用户的键盘输入并交由操作系统执行相应的命令.所有linux都支持一个叫做 bash 的shell,它的全称是 "Bourne Again SHell&quo

Linux用户以及权限相关命令 查看身份 id:Display user identity. 这个命令的输出会显示uid,gid和用户所属的组. uid即user ID,这是账户创建时被赋予的. gid是primary group ID,是主要的组的id.当然这个用户也可以属于其他更多的组. 用户账户信息被定义在 /etc/passwd文件中,组信息被定义在/etc/group文件中. chmod 命令名称:chmod 命令英文原意:change the permissions mode of

Most of this note comes from the Beginning the Linux Command Line, Second Edition by Sander van Vugt The only reason why many administrators are using a graphical interface on Linux, is because it allows them to run many terminal windows simultaneous

When you are using Linux command line frequently, using the history effectively can be a major productivity boost. In fact, once you have mastered the 15 examples that I’ve provided here, you’ll find using command line more enjoyable and fun. 1. Disp

最近在Visual Studio 2012进行vp8的开发,之前一直都是在ubuntu上进行开发,关于编译链接的一些选项可直接在makefile中定义,比如vp8的头文件都放在include文件下面,静态连接库放在lib文件夹下面,所以,就可以这样指定相关路径 -I./include -L./lib 对于习惯了在命令行指定相关属性的同志来说,幸运的是,在Visual Studio中也可以进行这样的设置. Project->Properities->Configuration Properiti

Ubuntu SDK我们大部分的开发者是非常有效的.它甚至可以帮助我们进行在线调试.在这篇文章中,我们介绍了如何使用command line编译和执行我们scope. 1)创建一个主Scope 我们能够使用Ubuntu SDK来创建一个最主要的Scope.在创建时,我们能够选择不论什么一个template.我们能够在SDK中试着在Desktop上进行编译执行以确保没有不论什么问题. watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvVWJ1bnR1VG91

https://www.codecademy.com/en/courses/learn-the-command-line Background The command line is a text interface for your computer. It's a program that takes in commands, which it passes on to the computer's operating system to run. From the command line

by Umer Zeeshan Ijaz The purpose of this tutorial is to introduce students to the frequently used tools for NGS analysis as well as giving experience in writing one-liners. Copy the required files to your current directory, change directory (cd) to t

建立自己profile路径应该在/Users/yourname/,最后要运行. ./.profile使文件生效,和windows中给添加环境变量是一个道理,还可以看出linux和UNIX默认运行路径为 export PATH=/opt/local/bin:/opt/local/sbin:$PATH.另外默认未修改用户可用mysql  -uroot -proot -P3306进行登录. If you have MAMP installed on your Mac OS X box, you're

Install the AWS Command Line Interface on Linux You can install the AWS Command Line Interface and its dependencies on most Linux distributions with pip, a package manager for Python. Important The awscli package is available in repositories for othe

https://tecadmin.net/ways-to-send-email-from-linux-command-line/ We all know the importance of emails these days for information transfer. There are many free emails service providers which we used for use like Gmail, Yahoo, RediffMail etc, which pro

https://mridgers.github.io/clink/ Clink Powerful Bash-style command line editing for cmd.exe Download v0.4.8 ZIP (portable) EXE (installer) Overview Clink combines the native Windows shell cmd.exe with the powerful command line editing features of th

source: https://www.pexels.com/photo/office-working-app-computer-97077/ 注:这篇适用于用MAC 开发的developer 身为程式开发者,很大一部分的时间是在用command line 做事,如果能把command line 调整成好用又酷炫的模样,不只是效率提升非常多,用起来爽度也比较高 像下面这样子的command line 是不是比内建的有意思多了?   图片来源:https://github.com/bhilburn

MySQL在command line Client下的一些命令 通过CMD进入到本地数据库: mysql -h localhost -u -root -p 参数说明: -h 要连接的服务器的主机名或IP地址,也可以是远程的服务器主机,-h localhos 也可以表示成  -hlocalhost  即:没有空格. -u 是服务器要验证的用户名,这个用户名一定是数据库中存在的,并且具有连接服务器的权限.-u root 可表示成 -uroot 即:没有空格. -p 是与上面用户名对应的密码,也可以直

how to stop MongoDB from the command line stop mongod https://docs.mongodb.com/manual/tutorial/manage-mongodb-processes/#stop-mongod-processes # start # server $ mongod --dbpath /System/Volumes/Data/data/db # stop $ mongod --shutdown # Ctrl + C # kil

Linux & terminal color & command line color how to change Linux terminal color https://askubuntu.com/questions/558280/changing-colour-of-text-and-background-of-terminal https://askubuntu.com/a/558422 # 92: Light Green # 107: White (don't use with

环境:RHEL6.5 使用scp命令报错: [root@oradb23 media]# scp /etc/hosts oradb24:/etc/ -bash: scp: command not found 查看openssh相关包: [root@oradb23 ~]# rpm -qa openssh* openssh-5.3p1-94.el6.x86_64 openssh-server-5.3p1-94.el6.x86_64 发现服务器默认没有安装openssh的客户端. yum 安装opens

由于误操作导致 source /etc/profile 报错 -bash: id:command is not found 此时,linux下很多命令到不能能用,包括vi ls 等... 可以使用 export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin 重新启用这些命令 如果 /etc/profile存在错误而导致source 不能成功,可以使用 /bin/vi  /etc/profil

How to build .apk file from command line Created on Wednesday, 29 June 2011 14:32 If you don’t want to install a number of programs for building your Android project, this article is for you. You will need only JDK, the Android SDK platform tools and