Basic Command

Iredmail is a set of GPL-released Shell scripts designed to fully install and configure http://www.aliyun.com/zixun/aggregation/12489.html "> Mail Service-Required components, To ease the burden on the system administrator. It provides a basic command-line user interface (implemented using the dialog program) that allows users to simply select the components that they want to use, within minutes (less than 3 ...).

The CP (copy) command can copy files or directories to other directories, just as the copy command in DOS is very powerful. When using the CP command, you only need to specify the source file name and destination file name or destination directory. Format: CP < SOURCE > < target >

Sometimes you know that a file or directory exists, but you don't know where to find it. You can use the Locate command to search for files or directories. Using the Locate command, you will see each directory or file that includes the search criteria. For example, if you want to search for files with the word finger in all names, type: The Locate finger locate command uses a database to locate files and directories with the word finger in the directory name. This search result may include a name called ...

It is easy to create a file in Liunx so that there are any files that are at any time in the system, and users can delete them with the RM command. This command deletes the file or directory itself from the directory, and for the linked file, only the link is deleted and the original file remains unchanged. http://www.aliyun.com/zixun/aggregation/18137.html > options for deleting files and directories include:-i-interaction. Prompt you to confirm the deletion. This option will help you avoid accidentally deleting files ...

The pwd command represents "Print sharable directory" (print working directory). When you type PWD, you are asking your Linux system to display your current position. For example: [Root@teacher apache]# Pwd/tmp/apache indicates that you are currently in the/tmp/apache directory.

In the process of learning Linux, the word shell is often heard. Maybe everyone in the use of Windows have this feeling, I want to listen to music, I open a player, then the speaker can make a sound, to print a document, we just click on the program to print the button, printing will automatically print out the document. But we do not have our own manual control speaker and Printer etc http://www.aliyun.com/zixun/aggregation/11585.html "> hard ...

In Linux, the CD command is a frequently needed instruction, and the CD command allows us to switch freely in the directory, if you need to switch to the root directory, the command is as follows: [root@localhost ~]# CD/[Root@localhost/]# Here we introduce you to use the CD command tips in any directory to switch home directory [root@localhost/]# CD [root@localhost ~]# ...

The mkdir (make directory) command is used to create a directory. For example, to establish a datal subdirectory in the system: [Root@teacher tmp] #mkdir datal

To move the file, use the MV command. Common options for MV include:-i-interaction. If the file you select will overwrite the existing file in the target, it will prompt you. This is a practical option because, like the-i option in CP, it gives you an opportunity to confirm the replacement of the saved file. f coercion. It goes beyond the interactive mode and moves the file without prompting. This option is dangerous unless you know what you're doing. Use this option carefully before you have confidence in your system. -v-details. Displays the progress of the file's movement. e.g.

The chmod command changes the access rights of a file or directory. Let's take a look at this document first. At the shell prompt, type: LS sneakers.txt the previous command shows this file information:-rw-rw-r--1 Test test 39 March 12:04 Sneakers.txt provides a lot of detail here. You can see who can read (R) and write (w) files, and who created the file (test), the group where the owner is located (Te ...).

The opposite of the head command is the tail command. With the tail command, you can view the 10 lines at the end of the file. This helps you view the last ten lines of the log file to read important system messages. You can also use tail to observe the process of updating log files. With the-f option, tail automatically displays new messages from the open file to the screen in real time. For example, to instantly observe/var/log/messages changes, type the following command at the shell prompt as root: tail ...

Use the LS command to display the contents of your current directory. The LS command has many options available. To see all the options for the LS command, you can read the instructions page by typing man ls at the shell prompt. The following is a short list of some common options used with LS. Comma all. Enumerates all the files in the directory, including hidden files (. filehttp://www.aliyun.com/zixun/aggregation/11696.h ...

Poppler is a PDF rendering library from Xpdf. It uses several advanced class libraries, such as FreeType and Cairois, to achieve better output, while providing basic command-line utilities. The Poppler 0.18.1 version was improved by the PostScript output created by Psoutputdev. Several Cairooutputdev errors have been fixed. Pdftocairo now use them correctly when refreshing and closing files. Software information: http: ...

Poppler is a PDF rendering library from Xpdf. It uses several advanced class libraries, such as FreeType and Cairois, to achieve better output, while providing basic command-line utilities. The Poppler version 0.18.0 improves the support capabilities of annotations and forms. Now the Psoutputdev back end uses writes gray to replace the original RGB gray image, CMYK replaces LEVEL2SEP and LEVEL3SEP RGB. Http://w ...