linux lcd panel info quotation

If you want to cheer up or greet user who login to Linux system, try using Linux fortune cookie program to display random quotes, jokes, or ASCII art as part of the login message printed at Linux command prompt.

Unfortunately, the Linux fortune program is not bundled with RHEL. If you don’t have permission to install on this funny program on production servers, give it a try on testing or development server, by downloading “fortune-mod” and “recode” RPM packages from rpmfind.net (for RHEL, locate the EPEL edition that matches your CPU architecture).

After installing the packages, append the fortune command to /etc/profile so that every Linux users who login to the system successfully will see the fortune cookie’s message before continue their work:

To get a list of fortune message categories, run fortune -f, to display only ASCII art, run fortune ascii-art. For more information, execute man fortune to get online reference right at Linux command prompt. Happy Linux!

There are only a few special characters involved in working with character strings on the command line or in a script on Linux: the single quote, the double quote and the backslash. But the rules aren’t as obvious as one might think. In this post, we’ll look at the easy and the somewhat tricky uses of these special characters.

This example demonstrates how to dump the whole scrollback buffer to that file: "C-A [ g SPACE G $ >".C-g gives information about the current line and column.x exchanges the first mark and the current cursor position. You can use this to adjust an already placed mark.@ does nothing. Does not even exit copy mode.

Note that termcap/terminfo/termcapinfo commands only work at startup and reattach time, so they must be reached via the default screenrc files to have an

In many cases, where the arguments are valid in both terminfo and termcap syntax, you can use the command "termcapinfo", which is just a shorthand for a pair

Some examples:termcap xterm* LP:hs@Informs screen that all terminals that begin with "xterm" have firm auto-margins that allow the last position on the screen to be updated (LP), but

termcap entries "Z0" and "Z1". See the "termcap" command for more information. You can also specify a new height if you want to change both values. The

(default decimal 23). Screen will connect to a server listening on the remote host and use the telnet protocol to communicate with that server.For telnet windows, the command info shows details about the connection in square brackets ([ and ]) at the end of the status line.

LFLOW. The remote host will send flow control information. (Ignored at the moment.)Additional flags for debugging are x, t and n (XDISPLOC, TSPEED and NEWENV).

Screen provides an escape mechanism to insert information like the current time into messages or file names. The escape character is "%" with one exception:

The idea is that if you have a terminal which doesn"t support an important feature (e.g. delete char or clear to EOS) you can build a new termcap/terminfo

the $TERMCAP variable reflecting the capabilities of the virtual terminal emulated. Notice that, however, on machines using the terminfo database this variable

I know this is a dirty way, but it gives me some monitor model name even better than sudo get-edid|parse-edid. It reads information in arrays, and outputs it in a way that can be read like you would read a file. You may modify it according to your needs.

With -lt:, sort by and show the ctime (time of last modification of file status information); with -l:, show ctime and sort by name; otherwise: sort by ctime, newest first.

Linux is a family of open-source operating systems based on the Linux kernel. The first Linux system kernel was released on September 17, 1991, by Linus Torvalds.

Popular Linux distributions include Debian, Fedora, and Ubuntu, and the commercial distributions include Red Hat Enterprise Linux and SUSE Linux Enterprise Server.

There are also quite a number of customized Linux distributions, such as Kali Linux, REMnux etc. Kali Linux is a Debian-based distribution developed, funded and maintained by Offensive Security for ethical hackers for the purposes of Penetration Testing, Security Research & Assessment, and Computer Computer Forensics & Reverse Engineering. REMnux, on the other hand, is a Linux distro curated for reverse-engineering and malware analysis purposes.

In Linux, /etc/passwd is a plain text file that stores essential user account information. It contains a list of the system’s accounts, represented with a line of text for each user. As an essential system file, /etc/passwd file is owned by the root user and it has 644 permissions, i.e., it allows read access to all the system users while only the root account can modify its content.

The /etc/passwd file contains one entry per line that describes useful information on user accounts defined in the system. Each line of the user information is represented by 7 fields that are separated (delimited) by a colon symbol. An example /etc/passwd file entry and the meaning of its contents are depicted in Figure 2.

Password: Historically, password information was stored in the /etc/passwd file. However, on modern Linux distributions, this field is set to x, meaning the password is encrypted and stored in the

User ID Info (GECOS): A comma separated values (Full name, room number, work phone number, home phone number, other contact information) that contain detailed information on the user.

User Home Directory: The absolute path to the user’s home directory. On most Linux distributions, user home directories are named after the usernames and created under the /home directory.

User Login Shell: The absolute path to the user’s login shell. On most Linux distributions, the default user login shell is Bash. In the case of the users created for system applications, this field is set to /sbin/nologin, meaning that the corresponding user can not log in to the Linux system directly.

To filter the output of the pervious cat /etc/passwd command by specifying a search pattern, such as a username, you can use the command command in Linux, as shown below.

is the simplest file transfer protocol to exchange files to and from a remote computer or network. Similar to Windows, Linux and UNIX operating systems also have built-in command-line prompts that can be used as FTP clients to make an FTP connection. Here’s a list of commonly used

The terminal is like a virtual second home for many Linux users since they spend most of their working time typing commands in it. It"s important to personalize the terminal to your heart"s desire if you don"t want to bore yourself with the dull, black command-line screen.

The terminal emulator installed on your Linux machine works as a frontend for the underlying shell. On most Linux distros, Bash is the default shell that comes preinstalled with the system. On Linux, if you don"t fancy the default shell—Bash in most cases—you can always change the shell using chsh.

To spice things up, you can display system information at the top of a new terminal instance in an attractive way. You don"t have to worry about extracting the system details and presenting them nicely, several tools are already available that do this job for you. Two of the most used ones are Neofetch and Screenfetch.

Normal text can be a huge turn-off for some users. Although the Linux terminal doesn"t support images and videos, you can, however, use ASCII art to add a visual touch to the screen.

If you are crazy about Linux and can"t seem to remember the current date and weather while working on the command line, you can configure the terminal to remind you of such details at launch.

Unlike Windows and macOS, users have complete control over the appearance and behavior of their Linux system. You can literally change any aspect of the operating system since most of the code is open-source and available to modify.

But understanding the code can be hard if you are unfamiliar with the programming language. Therefore, Linux tinkerers who want to dip their hands into customization and kernel development should have a good grasp of the C programming language and its concepts.