Using same in linux

How to rename and move files and directories on Linux

Overview

In this tutorial, you will learn how to use the mv command to move and renames files and directories on Linux.

Files and directories on Linux as very similar, from a filesystem point of view. This means the operations done on one can be also done on the other, with very few exceptions.

As such, you will notice that commands used to perform actions on files are identical with directories.

Rename files on Linux

To rename a file in Linux you use the mv command. The command accepts two or more arguments. For renaming files, only two arguments are needed, which are the source file and the target file.

The mv command will take the source file specified and rename it to the target file.

To rename a file named student1 to student10, for example, you would run the following command.

Provided the file target is the same directory, all file attributes will remain, including permissions.

Moving a file on Linux

To move a file to another location we use the same method as renaming a file, except the file path should be different.

For example, to move a file from /home/student1/lab-work.log to /var/labs/student1/lab-work.log , you would run the following command.

Moving and Renaming files on Linux

A file can be renamed during a move process using the mv command. You simply give the target path a different name. When mv moves the file, it will be given a new name.

For example, to move a file named student1.txt to /var/students and rename it to class1-student1.txt , you would run the following command.

Moving Multiple files on Linux

The mv command accepts multiple source files, which means we can move two or more files at the same time. When executing the mv command, each file listed will be considered a source with the last path being the exception. The last path will be treated as the target.

For example, to move student1.txt and student2.txt to /var/students , you would run the following command.

Moving Directories on Linux

Moving directories work the same as moving files. We specify the source directory and give a target directory.

For example, to move a directory path /tmp/logs to

/data/logs you would run the following command.

Moving Multiple Directories on Linux

As with files, multiple directories can be moved to a new location. We simply specially all of the directories to be moved, and then give a target directory for them to be moved to.

Verbose Output Flag

The mv command will perform its operations silently. No output will be printed to the screen while files or directories are being moved or renamed.

To instruct the mv command to print out a log of actions being taken, you can use the -v flag. This flag enabled verbosity, which is helpful for auditing.

Do Not Overwrite Existing Files

To force the mv command to not overwrite existing files when moving or renaming a file, use the -n flag.

In the example below, if the student2.txt file already exists, then the mv command will not rename the file and it will exit with an error.

Do Not Prompt to Confirm Overwrites

If you want to forcefully move files or directories and overwrite paths that already exist, you can use the -f flag. This is effective for overwriting old, stale files or directories with new ones with the same name.

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15 малоизвестных команд Linux

Каждому разработчику в определенной степени следует овладеть навыками работы в терминале. Физически находиться у компьютера не всегда возможно, поэтому приходится подключаться удаленно. И действительно, GUI-программы вполне могут с этим с правиться, но зачастую они работают медленнее, чем получение доступа через тот же терминал (в конце концов, это лишь обмен текстом).

Независимо от того, новичок вы или гуру, уверен, вы найдете для себя полезное среди нижеприведенных советов и рекомендаций.

1. man

Начнем с простого, команда man, что означает manual. Если хотите прочитать о какой-либо команде, просто наберите:

Вот так можно прочитать мануал по man’у:

man — не малоизвестная команда, ее вы найдете в любом учебнике Unix’а, однако я бы хотел обратить ваше внимание на некоторые ее особенности.

Так, например, чтобы прочитать про ASCII-таблицу, наберите следующее:

Путались когда-нибудь, что меньше пико- или фемто-? Пробуйте следующее:

Подобных веселых команд еще много. Есть с чем поразвлечься. (попробуйте xkill). А пока, идем дальше.

Если вы случайно сменили директорию, можно просто вернуться в последнюю набрав:

3. sudo !!

Этот комикс подчеркивает важность команды sudo в Unix. sudo выполняет команду с правами администратора. Если вы набрали команду без sudo, а потом оказалось, что она необходима, наберите просто:

и она запустится уже с правами администратора.

4. mtr

mtr — мощный инструмент для диагностики сети. Он совмещает в себе функциональность traceroute и ping.

5. [space] command

Опытные пользователи, возможно, знают, что история запущенных команд сохраняется в файле

/.bash_history.
Так, чтобы команда не записывалась в историю, просто наберите перед командой пробел.

6. jot

jot генерирует текст. Числа, текст, все вместе. Чтобы сгенерировать числа, попробуйте следующее:

Если пропишете один аргумент, сгенерируются числа от 1 до значения аргумента.

Чтобы получить случайные:

Подробнее читайте здесь или наберите man jot

Довольно простая команда. Показывает свободное пространство на диске (disk free)

8. pkill

pkill (или process kill) завершает запущенный процесс. Эта команда особенно полезна, когда приложение не отвечает:

Веселой/жестокой команда может оказаться, если вы запускаете ее на удаленной машине. Будьте осторожны, можно потерять важные данные.

9. ddate

10. cal

Старый-добрый Григорианский календарь.

11. tac

Вы, возможно, слышали про команду cat. Она имеет ряд утилит для создания, копирования, слияния и отображения текстовых файлов. tac делает то же самое, но в обратном порядке.

Команда w показывает, кто на данный момент вошел в систему, наряду с другой полезной информацией такой, как время работы или нагрузкой процессора.

13. factor

factor раскладывает число на множители:

14. yes

Возвращаемся к веселым командам, yes выводит текст несколько раз:

Используйте ее, чтобы запутать подкравшихся сзади друзей. Внимание, единственный способ остановить ее — CTRL + C (ну, или закрыть терминал)

15. nl

nl нумерует строки. Больше всего полезна при использовании ее в качестве аргумента. Давайте взглянем на пару примеров:

Ну вот мы и подошли к концу команд нашего списка. Сколько уже знали? Сколько из них используете регулярно? Пишите, у кого — сколько? У кого 15/15 — тот выиграл.

Предлагаю делиться интересными командами, кто что знает. Спасибо за внимание, всего хорошего.

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35 Linux Basic Commands Every User Should Know

When hearing about Linux, most people think of a complicated operating system that is only used by programmers. But it’s not as scary as it seems.

Linux is an entire family of open-source Unix operating systems, that are based on the Linux Kernel. This includes all of the most popular Linux based systems like Ubuntu, Fedora, Mint, Debian, and others. More accurately, they’re called distributions or distros.

Since Linux was first released in 1991, it has continued to gain popularity due to its open-source nature. People can freely modify and redistribute it under their own name.

When operating a Linux OS, you need to use a shell — an interface that gives you access to the operating system’s services. Most Linux distributions use a graphic user interface (GUI) as their shell, mainly to provide ease of use for their users.

That being said, it’s recommended to use a command-line interface (CLI) because it’s more powerful and effective. Tasks that require a multi-step process through GUI can be done in a matter of seconds by typing commands into the CLI.

So if you’re considering using Linux, learning basic command lines will go a long way. In this article, you’ll learn 35 basic Linux commands that will undoubtedly help you navigate through Linux as a newbie.

Linux Basic Commands

Before we go on to the list of commands, you need to open the command line first. If you are still unsure about the command-line interface, check out this CLI tutorial.

Although the steps may differ depending on the distribution that you’re using, you can usually find the command line in the Utilities section.

Here is a list of basic Linux commands:

1. pwd command

Use the pwd command to find out the path of the current working directory (folder) you’re in. The command will return an absolute (full) path, which is basically a path of all the directories that starts with a forward slash (/). An example of an absolute path is /home/username.

2. cd command

To navigate through the Linux files and directories, use the cd command. It requires either the full path or the name of the directory, depending on the current working directory that you’re in.

Let’s say you’re in /home/username/Documents and you want to go to Photos, a subdirectory of Documents. To do so, simply type the following command: cd Photos.

Another scenario is if you want to switch to a completely new directory, for example,/home/username/Movies. In this case, you have to type cd followed by the directory’s absolute path: cd /home/username/Movies.

There are some shortcuts to help you navigate quickly:

• cd .. (with two dots) to move one directory up
• cd to go straight to the home folder
• cd- (with a hyphen) to move to your previous directory

On a side note, Linux’s shell is case sensitive. So, you have to type the name’s directory exactly as it is.

3. ls command

The ls command is used to view the contents of a directory. By default, this command will display the contents of your current working directory.

If you want to see the content of other directories, type ls and then the directory’s path. For example, enter ls /home/username/Documents to view the content of Documents.

There are variations you can use with the ls command:

• ls -R will list all the files in the sub-directories as well
• ls -a will show the hidden files
• ls -al will list the files and directories with detailed information like the permissions, size, owner, etc.

4. cat command

cat (short for concatenate) is one of the most frequently used commands in Linux. It is used to list the contents of a file on the standard output (sdout). To run this command, type cat followed by the file’s name and its extension. For instance: cat file.txt.

Here are other ways to use the cat command:

• cat > filename creates a new file
• cat filename1 filename2>filename3 joins two files (1 and 2) and stores the output of them in a new file (3)
• to convert a file to upper or lower case use, cat filename | tr a-z A-Z >output.txt

5. cp command

Use the cp command to copy files from the current directory to a different directory. For instance, the command cp scenery.jpg /home/username/Pictures would create a copy of scenery.jpg (from your current directory) into the Pictures directory.

6. mv command

The primary use of the mv command is to move files, although it can also be used to rename files.

The arguments in mv are similar to the cp command. You need to type mv, the file’s name, and the destination’s directory. For example: mv file.txt /home/username/Documents.

To rename files, the Linux command is mv oldname.ext newname.ext

7. mkdir command

Use mkdir command to make a new directory — if you type mkdir Music it will create a directory called Music.

There are extra mkdir commands as well:

• To generate a new directory inside another directory, use this Linux basic command mkdir Music/Newfile
• use the p (parents) option to create a directory in between two existing directories. For example, mkdir -p Music/2020/Newfile will create the new “2020” file.

8. rmdir command

If you need to delete a directory, use the rmdir command. However, rmdir only allows you to delete empty directories.

9. rm command

The rm command is used to delete directories and the contents within them. If you only want to delete the directory — as an alternative to rmdir — use rm -r.

Note: Be very careful with this command and double-check which directory you are in. This will delete everything and there is no undo.

10. touch command

The touch command allows you to create a blank new file through the Linux command line. As an example, enter touch /home/username/Documents/Web.html to create an HTML file entitled Web under the Documents directory.

11. locate command

You can use this command to locate a file, just like the search command in Windows. What’s more, using the -i argument along with this command will make it case-insensitive, so you can search for a file even if you don’t remember its exact name.

To search for a file that contains two or more words, use an asterisk (*). For example, locate -i school*note command will search for any file that contains the word “school” and “note”, whether it is uppercase or lowercase.

12. find command

Similar to the locate command, using find also searches for files and directories. The difference is, you use the find command to locate files within a given directory.

As an example, find /home/ -name notes.txt command will search for a file called notes.txt within the home directory and its subdirectories.

Other variations when using the find are:

• To find files in the current directory use, find . -name notes.txt
• To look for directories use, / -type d -name notes. txt

13. grep command

Another basic Linux command that is undoubtedly helpful for everyday use is grep. It lets you search through all the text in a given file.

To illustrate, grep blue notepad.txt will search for the word blue in the notepad file. Lines that contain the searched word will be displayed fully.

14. sudo command

Short for “SuperUser Do”, this command enables you to perform tasks that require administrative or root permissions. However, it is not advisable to use this command for daily use because it might be easy for an error to occur if you did something wrong.

15. df command

Use df command to get a report on the system’s disk space usage, shown in percentage and KBs. If you want to see the report in megabytes, type df -m.

16. du command

If you want to check how much space a file or a directory takes, the du (Disk Usage) command is the answer. However, the disk usage summary will show disk block numbers instead of the usual size format. If you want to see it in bytes, kilobytes, and megabytes, add the -h argument to the command line.

17. head command

The head command is used to view the first lines of any text file. By default, it will show the first ten lines, but you can change this number to your liking. For example, if you only want to show the first five lines, type head -n 5 filename.ext.

18. tail command

This one has a similar function to the head command, but instead of showing the first lines, the tail command will display the last ten lines of a text file. For example, tail -n filename.ext.

19. diff command

Short for difference, the diff command compares the contents of two files line by line. After analyzing the files, it will output the lines that do not match. Programmers often use this command when they need to make program alterations instead of rewriting the entire source code.

The simplest form of this command is diff file1.ext file2.ext

20. tar command

The tar command is the most used command to archive multiple files into a tarball — a common Linux file format that is similar to zip format, with compression being optional.

This command is quite complex with a long list of functions such as adding new files into an existing archive, listing the content of an archive, extracting the content from an archive, and many more. Check out some practical examples to know more about other functions.

21. chmod command

chmod is another Linux command, used to change the read, write, and execute permissions of files and directories. As this command is rather complicated, you can read the full tutorial in order to execute it properly.

22. chown command

In Linux, all files are owned by a specific user. The chown command enables you to change or transfer the ownership of a file to the specified username. For instance, chown linuxuser2 file.ext will make linuxuser2 as the owner of the file.ext.

23. jobs command

jobs command will display all current jobs along with their statuses. A job is basically a process that is started by the shell.

24. kill command

If you have an unresponsive program, you can terminate it manually by using the kill command. It will send a certain signal to the misbehaving app and instructs the app to terminate itself.

There is a total of sixty-four signals that you can use, but people usually only use two signals:

• SIGTERM (15) — requests a program to stop running and gives it some time to save all of its progress. If you don’t specify the signal when entering the kill command, this signal will be used.
• SIGKILL (9) — forces programs to stop immediately. Unsaved progress will be lost.

Besides knowing the signals, you also need to know the process identification number (PID) of the program you want to kill. If you don’t know the PID, simply run the command ps ux.

After knowing what signal you want to use and the PID of the program, enter the following syntax:

kill [signal option] PID.

25. ping command

Use the ping command to check your connectivity status to a server. For example, by simply entering ping google.com, the command will check whether you’re able to connect to Google and also measure the response time.

26. wget command

The Linux command line is super useful — you can even download files from the internet with the help of the wget command. To do so, simply type wget followed by the download link.

27. uname command

The uname command, short for Unix Name, will print detailed information about your Linux system like the machine name, operating system, kernel, and so on.

28. top command

As a terminal equivalent to Task Manager in Windows, the top command will display a list of running processes and how much CPU each process uses. It’s very useful to monitor system resource usage, especially knowing which process needs to be terminated because it consumes too many resources.

29. history command

When you’ve been using Linux for a certain period of time, you’ll quickly notice that you can run hundreds of commands every day. As such, running history command is particularly useful if you want to review the commands you’ve entered before.

30. man command

Confused about the function of certain Linux commands? Don’t worry, you can easily learn how to use them right from Linux’s shell by using the man command. For instance, entering man tail will show the manual instruction of the tail command.

31. echo command

This command is used to move some data into a file. For example, if you want to add the text, “Hello, my name is John” into a file called name.txt, you would type echo Hello, my name is John >> name.txt

32. zip, unzip command

Use the zip command to compress your files into a zip archive, and use the unzip command to extract the zipped files from a zip archive.

33. hostname command

If you want to know the name of your host/network simply type hostname. Adding a -i to the end will display the IP address of your network.

34. useradd, userdel command

Since Linux is a multi-user system, this means more than one person can interact with the same system at the same time. useradd is used to create a new user, while passwd is adding a password to that user’s account. To add a new person named John type, useradd John and then to add his password type, passwd 123456789.

To remove a user is very similar to adding a new user. To delete the users account type, userdel UserName

Bonus Tips and Tricks

Use the clear command to clean out the terminal if it is getting cluttered with too many past commands.

Try the TAB button to autofill what you are typing. For example, if you need to type Documents, begin to type a command (let’s go with cd Docu, then hit the TAB key) and the terminal will fill in the rest, showing you cd Documents.

Ctrl+C and Ctrl+Z are used to stop any command that is currently working. Ctrl+C will stop and terminate the command, while Ctrl+Z will simply pause the command.

If you accidental freeze your terminal by using Ctrl+S, simply undo this with the unfreeze Ctrl+Q.

Ctrl+A moves you to the beginning of the line while Ctrl+E moves you to the end.

You can run multiple commands in one single command by using the “;” to separate them. For example Command1; Command2; Command3. Or use && if you only want the next command to run when the first one is successful.

To Sum Up

Basic Linux commands help users execute tasks easily and effectively. It might take a while to remember some of the basic commands, but nothing is impossible with lots of practice.

In the end, knowing and mastering these basic Linux commands will be undoubtedly beneficial for you. Good luck!

Artūras is an experienced technical content writer. Bringing in a lot of knowledge about WordPress and web hosting to the team, he strives to write pristine content about any IT related subject. He also loves dogs.

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