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Vim (text editor)
Command-line interface
The Linux console is a system console internal to the Linux kernel. A system console is the device which receives all kernel messages and warnings and which allows logins in single user mode. [ 1] The Linux console provides a way for the kernel and other processes to send text output to the user, and to receive text input from the user.
Bash (Unix shell)
X Window System
cat (Unix) cat is a standard Unix utility that reads files sequentially, writing them to standard output. The name is derived from its function to (con) cat enate files (from Latin catenare, "to chain"). [1] [2] It has been ported to a number of operating systems.
GNU nano is a text editor for Unix-like computing systems or operating environments using a command line interface. It emulates the Pico text editor, part of the Pine email client, and also provides additional functionality. [5] Unlike Pico, nano is licensed under the GNU General Public License (GPL). Released as free software by Chris ...
sed ("stream editor") is a Unix utility that parses and transforms text, using a simple, compact programming language. It was developed from 1973 to 1974 by Lee E. McMahon of Bell Labs, [1] and is available today for most operating systems. [2] sed was based on the scripting features of the interactive editor ed ("editor", 1971) and the earlier ...