unix sudo command example

Article Title: Command-oriented Unix system commands in one go. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In Unix, there is a very practical function, namely the command-orien

contain a match. The output content only contains rows that do not contain the given word. For example, output all rows that do not contain the bar word: $ grep -v bar /path/to/file UNIX/Linux pipelines and grep commands Grep is often used with pipelines. In this example, the name of the hard disk device is displayed: # dmesg | egrep '(s|h)d[a-z]' Display CPU mo

Iv. Linux/UNIX operating command accumulation [chmod, chown, tail], chmodchownIn Linux/UNIX, users often use the text interface to set the system or operating system. The author is constantly in touch with this command during his work, therefore, this article has been specially developed, prepared, and started. This ar

The Dos2unix command is used to convert a DOS-formatted text file into Unix (Dos/mac to UNIX text, format Converter). Dos text file is based on \ r \ n As a break mark, expressed as 16 binary is 0D 0 A. The text file under Unix is marked with \ n as a break mark, which means that the 16 binary is 0 a. The DOS format te

Iii. Linux/UNIX operating command accumulation [gzip, jar, tar, find, crontab] In Linux/UNIX, users often use text interfaces to set up systems or operating systems. The author is constantly working on these commands, therefore, this article has been specially developed, prepared, and started. This article mainly records some of the operating commands you encount

BG and FGLinux/unix the biggest advantage of the Microsoft platform is the real multi-user, multi-tasking. Therefore, in the task management also has the characteristic management thought.We know that on Windows, we either have a program running in the background as a service or stop the service. Instead of allowing the program to switch between foreground and background. Linux provides FG and BG commands that allow you to easily schedule tasks that a

an empty file (also known as "sparse file "). Create a 10 M file and press Enter: $ Dd if =/dev/zero of = test. img bs = 1024 count = 0 seek = $ [1024*10] Create a 100 M file and press Enter: $ Dd if =/dev/zero of = test. img bs = 1024 count = 0 seek = $ [1024*100]$ Ls-lh test. img Create a 1 GB file: $ Dd if =/dev/zero of = 1G. img bs = 1 count = 0 seek = 1GSample output: 0 + 0 records in0 + 0 records out0 bytes (0 B) copied, 0.000235686 s, 0.0 kB/s Confirm the file size (pay attention to the

input and the edit can be done in input mode. For example, to deleteIn addition to the characters, press [Delete] directly. The insert state and the substitution state can be cut directly with [insert]The editing instructions for the instruction mode. But as mentioned earlier, these instructions are almost everyTerminals can be used, not just on the PC.The basic instructions for moving a cursor in instruction mode are H, J, K, L. I think you should b

been interrupted at any time. In addition to supporting general HTTP (s) and FTP protocols, ARIA2 also supports the BitTorrent protocol. This means that you can also use aria2 to download the torrent file.Ttytter EarthquakeTtytter is a Perl-written command-line Twitter-based tool that can do everything other platform clients can do, of course, to support Chinese. Scripting, CLI control, terminal control, and Perl control are the most loved.Earthquak

been interrupted at any time. In addition to supporting general HTTP (s) and FTP protocols, ARIA2 also supports the BitTorrent protocol. This means that you can also use aria2 to download the torrent file.Ttytter EarthquakeTtytter is a Perl-written command-line Twitter-based tool that can do everything other platform clients can do, of course, to support Chinese. Scripting, CLI control, terminal control, and Perl control are the most loved.Earthquak

Below is a collection of 28 unix/linux under the 28 command line tools, some are familiar with, some are very useful, some are not known. These tools are very good, I hope everyone knows. In order to facilitate the study, I have a picture, but also added the official website connectionDstat SAR Iostat, Vmstat, ifstat a triple tool for viewing system performance (I mentioned those three Xxstat tools in the

size; Sixth domain: the last modification date and time of the file. Modifying the file means adding and modifying the files or subdirectories in the file; Domain 7: File Name Ls-t List objects based on the file modification time. The last modification is before.Ls-1 List objects in a single row.Ls-lat combination options, that is, each option can be used in combination, except for mutually exclusive options, such as-a and-, the preceding combination is ls-l, ls-a, and ls-t. Combination optio