How to perform file operations in Python?

File operations are a crucial part of any programming language, and Python provides several methods for performing file operations. Here are some of the most common tasks: 1. Op…

How to write to a file in Python using open() w…

To write to a file in Python using the `open()` function with mode 'w' or 'a', you can follow these steps: 1. Open the file in write ('w') or append ('a') mode using the `open()…

How to rename a file in Python using os.rename(…

To rename a file in Python, you can use the `os.rename()` method from the `os` library. This method takes the current name and new name of the file as its inputs and renames the f…

How to rename a file in Linux using the mv comm…

To rename a file in Linux using the `mv` command, you can use the following syntax: ``` mv oldfilename newfilename ``` Where `oldfilename` is the current name of the file you …

How to append to a text file in Linux?

You can append to a text file in Linux using the `>>` operator or the `echo` command. Here are some examples: 1. Using `>>` operator: ``` echo "new line of text" >> file.txt …

How to read the contents of a text file in Linu…

To read the contents of a text file in Linux, you can use various commands such as `cat`, `less`, or `more`. Here are some examples: 1. Using `cat` command: ``` cat file.txt …

How to find the size of a file in Linux using t…

To find the size of a file in Linux using the `du` command, you can use the following command: ``` du -h file_name ``` Here, `-h` stands for "human-readable" and will display …

How to search for a string in a file using the …

To search for a string in a file using the `grep` command, you can use the following syntax: ``` grep pattern file_name ``` Here `pattern` represents the string you want to se…

How to remove duplicate lines from a text file …

To remove duplicate lines from a text file using Linux command line, you can use the `sort` and `uniq` commands together. Here's the command: ``` sort file.txt | uniq > output_…

How to delete a line from a text file in Linux?

To delete a specific line from a text file using Linux command line, you can use the `sed` command. Here's an example: ``` sed -i '2d' file.txt ``` This command deletes the se…