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How to Get the Content Of A Terminal In Bash?

Published on
4 min read
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To get the content of a terminal in Bash, you can use the following command:

content=$(cat)

This command uses the cat command to read the input from the terminal and store it in a variable called content.

Here's how you can implement it:

  1. Open the terminal.
  2. Type any content you want into the terminal.
  3. Press Ctrl + D to indicate the end of input.
  4. You can then access the content you entered by referring to the content variable.

For example, you can print the content by using:

echo $content

This will display the exact text you typed in the terminal, without any list items.

What is the command to find the size of a file in bash?

The command to find the size of a file in bash is "ls -l" followed by the filename. Another way to display the file size only is by using the "stat" command and specifying the file with "%s" to return the size in bytes. Here are the examples:

  1. Using "ls -l":

ls -l

For example, to find the size of a file named "example.txt":

ls -l example.txt

  1. Using "stat":

stat -c "%s"

For example:

stat -c "%s" example.txt

Both commands will display the size of the file in bytes.

How to check the available disk space using bash?

To check the available disk space using bash, you can use the df command. Here are a few examples of how you can use it:

  1. To check the available disk space in human-readable format (bytes, kilobytes, megabytes, etc.):

df -h

  1. To check the available disk space for a specific directory:

df -h /path/to/directory

  1. To check the available disk space and filter the output to a specific partition, you can use the grep command:

df -h | grep /dev/sda1

These commands will display the total disk space, used space, available space, and usage percentage for the specified partition or directory.

What is the command to create a backup of a file in bash?

The command to create a backup of a file in bash is:

cp

For example, to create a backup of a file named "example.txt", you can use the following command:

cp example.txt example.txt.bak

This will create a backup file with the name "example.txt.bak".

How can I sort the lines of a file in alphabetical order using bash?

You can use the sort command in bash to sort the lines of a file in alphabetical order. Here's how you can do it:

  1. Open your terminal.
  2. Use the following syntax of the sort command: sort Replace with the name of the file you want to sort. For example, if the file is called "example.txt", the command would be: sort example.txt
  3. Press Enter.

The sorted lines will be displayed in the terminal. If you want to save the sorted lines in a new file, you can use the output redirection operator > to redirect the output to a new file.

For example, to save the sorted lines in a new file called "sorted.txt", you can use the following command: sort example.txt > sorted.txt

Now, the sorted lines will be saved in the "sorted.txt" file.

The command to create a symbolic link in bash is ln -s. Here is the syntax:

ln -s <link_name>

  • is the path of the target file or directory that you want to link to.
  • is the name or path of the symbolic link that you want to create.

For example, to create a symbolic link named link.txt pointing to a file named file.txt, you would use the following command:

ln -s /path/to/file.txt link.txt