Commands on My Personal Project

cat

Mon, 04 May 2026 17:39:15 +0200

Command for various file operations:

Viewing file content
Combining multiple files
Using useful options:
- -n: to show line numbers
- -E: to highlight end-of-line ( this will show $ in the end of line)
- -A: to show all non printed characters (equivalent to -vET)
- -b: to number non-blank output lines
- -s: to suppress repeated empty output lines
- -T: to display TAB characters as ^|
- -v: Use ^ and M- notation, except for LFD and TAB

Syntax of cat command

cat [options] filename

Create a new file and add content

cat > filename

type content
press ctrl+D to save and exit

Copy or merge file contens

cat file1 file2 > merged_file

Open files whose names start with dash (-)

cat -- filename

example:

cat -- -list.txt

cp

Thu, 26 Feb 2026 12:03:01 +0100

Copy command in Linux is used to duplicate files or directories from one location to another within the file system. It supports copying single files, multiple files, and entire directories, with options to control overwriting and attribute preservation.

Copy data from one file to another
Copy multiple files into a directory
Recursively copy directories and subdirectories
Overwrite existing files by default

Syntax

cp [options] <source> <destination>
cp [options] <source1> <source2> <destination_directory>
--------------------------------------------------------------
cp: invokes the copy command
[options]: optional flags that modify the behavior (e.g., -i, -f, -r, -p)
<source>: the file or directory to be copied
<source1> <source2> ...: allows specifying multiple source files
<destination>: target file or directory
<destination_directory>: if copying multiple files, the destination must be a directory

Copy between two files

When the cp command is provided with two file names, it copies the contents of the source file to the destination file.

ls

Thu, 26 Feb 2026 12:03:01 +0100

test test a zase jen test