The Linux move command (mv) is one of the essential commands,
which can be very useful in Linux, Unix, and AIX. The primary purpose of the move command is
obviously to move files, and of course, directories. The move command may also be used to rename
files and to make backups.
Move
Command Syntax
$ mv [options] source (file or directory) destination
Move Command options
option
description
mv -f
force move by overwriting destination file
without prompt
mv -i
interactive prompt before overwriting
mv -u
update – move when the source is newer than the
destination
mv -v
verbose – print source and destination files
MV – t
explicitly saying to move the file or directory here,
rather trying to fit everything into the last argument.
mv *
Move all (Multiple) files to a specific director without
listing by name
For More move command
details see the Linux documentation manuals using the man command
$ man mv
mv command
examples
Here are some quick and very simple move command (MV)
examples for reference.
Move Move to
files to the /Archive/ directory:
$ mv happy.txt garden.txt /Archive/
Move all “.txt” files
in the current directory to subdirectory backup:
$ mv *.txt backup
Move all files in
subdirectory ‘backup’ to current directory:
$ mv backup/*
Rename file happy.txt
to happy.bak filename:
$ mv happy.txt happy.bak
Rename directory backup
to backup2:
$ mv backup backup2
Update – move when happy.txt
is newer or missing in target directory:
$ mv -u happy.txt backup
Move happy.txt and
prompt before overwrite backup / happy.txt:
The “Set Number” command in the VI (visual instrument) text
editor seems may not seem like the most useful command. However, it is more useful than it
appears. Using the “set number” command
is a visual aid, which facilitates navigation within the VI editor.
To
Enable Line Number In the VI Editor
The “set Number” command is used to make display line
numbers, to enable line numbers:
Press the Esc key within the VI editor, if you
are currently in insert or append mode.
Press the colon key “:”, which will appear at
the lower-left corner of the screen.
Following the colon enter “set number” command
(without quotes) and press enter.
A column of sequential line numbers will then appear at the
left side of the screen. Each line number references the text located directly
to the right. Now you will know exactly which line is where and be able to enter
a colon and the line number you want to move to and move around the document
lines with certainty.
To
Disable Line Number In the VI Editor
When you are ready to turn offline numbering, again follow
the preceding instructions, except this time, enter the following line at the :
prompt:
Press the Esc key within the VI editor, if you
are currently in insert or append mode.
Press the colon key “:”, which will appear at
the lower-left corner of the screen.
Following the colon enter “set nonumber” command
(without quotes) and press enter.
To Make The Line
Number Enable When You Open VI:
Normally, vi will forget the setting you’ve chosen once you’ve left the editor. You can, however, make the “set Number” command take effect automatically whenever you use vi on a user/account, enter the “set Number” command as a line in the .exrc file in your home directory.
The most Important Linux Distributions To Learn Professionally
Many of us either want a way to import our Linux knowledge,
improve our technical career options or perhaps, move into the technology
career. To do any of these efficiently
them, the first step would be to focus on the major Linux distribution used by
employers.
The most adapted distributions Linux are Red Hat Enterprise
Linux (RHEL) and Ubuntu, so, of the multitude of Linux distributions available,
these would be the to learn if you want to move your career forward.
However, if you are seeking an inexpensive alternative to hone your Linux skills at home, then CentOS, is likely your best choice since it is free and is pretty much a copy of RedHat.
Do you think that the command lines are an old-fashion
leftover from previous decades or an antiquated way of using a PC?
Think again. Indeed, it is one of the most powerful and flexible ways
to perform and manage in Linux. If you come from the comfort of a Mac
or Window desktop, however, it can be a bit intimidating to get used to
Linux commands. Everything is secretive, dark, and anything but
friendly to beginners. That’s why we have rounded up this short list of
the most useful Linux commands with examples. Keep reading and speed up
your learning journey with Linux.
1. Ls command – list files
Ls
is one of the most basic and common commands in Linux. You can use it
to print contents in the current working directory and see the list of
files, directories, or folders on your Linux system. For instance,
the command “ls tourism” will display the users every folder store
inside the overall “tourism” folder. Keep in mind that directories and
files will be denoted in different colors, which can be selected in the
system. You would also use the command “ls – R” to display all
files both in the directories and subdirectories. Since Linux commands
are case sensitive, make sure to enter “R” instead of “r” to avoid an
error.
2. Cat command – create and view files
You can
use the “cat” command to show text files. Also, it would be used for
creating, combining, and copying text files. For example, use “cat
linux_tip” to get inside the linux_tip file and read its contents on
the screen. To combine two text files “linux_tip_1” and
“linux_tip_2, you can enter the following command “cat linux_tip_1
linux_tip_2 > linux_tip”. Keep in mind that only text documents
would be combined and shown with this command.
3. Rm command – delete files
The
“Rm” command can be used for removing files or directories from your
Linux system without confirmation. The syntax is simple “Rm
name_deleted_file.” For example, the command “rm computer_science”
will immediately remove the file or directory named “computer_science”
from your computer. Make sure to consider carefully before using this
command because you cannot get it back.
To move and rename files, the “mv” command will be used. Here is the basic syntax for this task: “mv filename new_location.” Suppose
that you need to move the file name “english_class” to location
“/home/school/documents”, just enter the command “mv english_class
/home/school/documents.” Keep in mind that this command requires the
permission of users. The syntax for renaming a file is “mv filename newname”. An example command is “mv english_class french_class”
5. Mkdir – create directories
If
you want to create a new directory in your Linux system, then you can
use the “mkdir” command. The syntax is “mkdir new_directory.” For
instance, you can create a new directory named “final homework” by
typing the following command “mkdir final_homework.” In case you do not
want to make a parent directory manually, add the -p argument. Keep in
mind that it is -p, not -P. Everything in Linux is case sensitive.
6. Rmdir command – remove directories
In
contrast with the mkdir command, you can use the rmdir command to
remove a directory. The syntax is similar: “rmdir removed_directory.” If
you enter the following command “rmdir basketball_data”, it will
immediately delete the directory named “basketball_data”. Always check
carefully to make sure that there is no sub-directory or file under the
deleted directory. If possible, it is always better to delete the
sub-directory or files first before moving to the parent one.
7. Man command – seek help in Linux
“Man”
simply stands for manual. You can use this command to access a
reference book of the Linux system, which is quite similar to the
“Help” file in many popular applications or software. To seek help on
any commands that you don’t understand, just enter “ma command_name”.
The terminal will open a manual page for the typed command. For example, if you enter “man ls”, the terminal will provide you with basic information on the “ls” command.
8. History command – view previous commands
As you can guess from the name, the “history” command can be used to display all of the commands that you just used previously for the current session. This can be helpful in referring to the old commands and re-entering or re-using them in the next operations.
In simple terms, yum is a, command-line interface, package manager utility for computers running the Linux operating system, which augments the RPM Package Manager capabilities. yum is the primary tool for getting, installing, deleting, querying, and managing RPM software packages. Also, yum is used in Red Hat Enterprise Linux (RHEL) versions 5 and later.
In Linux there are lot of ways to disk size and/or space, but the ‘Disk Filesystem’ (df) command is old reliable and has been around a long time. The ‘df’ command provides a summary of disk space and free space, which I find myself coming back to time after time.
