Added Commands

Added more commands to learn after 10.

Author: SaniTheWay

README.md

@@ -1,11 +1,12 @@
 # LearnBase-Bash :book:
 ### Heared about Linux? Want to learn bash scripting? or Searching for a good Handbook for terminal Commands?
+> 🏗️**This Repository still under construction. But feel free to explore and contribute** 🤿
 
 **HERE's ALL.**<br>
 In a programmers' life, Linux is the thing that one should know how to use it efficiently.
 This is a self learn tutorial for those who new to Linux terminal and want to learn how to use it effectively.
 
-> This tutorial is covering the most used(80-90%) commands.
+> This tutorial is covering the most used(80-90%) commands.<br>
 
 ### 📙Let's Start❗
 
@@ -14,13 +15,15 @@ __1. ```man``` command__
  - Syntax: ```man <command_name>```
  - use ```q``` key to exit from man page
 
+
 __2. ```ls``` command__
  - list command, used to list the files.
  - Syntax: ```ls``` accepts a lot of options 
    - ```ls```
    - ```ls <folder_path>``` - to list files of a specific folder
    -  ```ls -al``` 
 
+   
 __3. ```mkdir``` command__
  - to create folders
  - Syntax:
@@ -29,6 +32,7 @@ __3. ```mkdir``` command__
    - ```mkdir -p <parentfolder / childfolder>``` - nested folders
    - 
 
+
 __4. ```cd``` command__
  - cd means change directory. You can jump between folders using this command.
  -Syntax: 
@@ -37,34 +41,120 @@ __4. ```cd``` command__
    - ```cd ../folder_name``` - 
    - ```cd /<foldername>``` - use absolute paths, which start from the root folder ```/```
 
+
 __5. ```pwd``` command__
  - prints current folder path.
 
+ 
 __6. ```rmdir``` command__
  - delete __empty__ folders using this command
  - Syntax:
-   - ```rmdir <folder_name>
+   - ```rmdir <folder_name>```
    - ```rm -rf <folder>``` : _To delete folders with files in them_
    > ❗ NOTE: this command does not ask for the confirmation from the user and immediately remove that you ask it to remove.
 
+
 __7. ```touch``` command__
  - to create an empty file
- - Syntax: ```touch <file_name>
+ - Syntax: ```touch <file_name>```
  - If the file already exists, it opens th file in write mode.
 
+
 __8. ```mv``` command__
  - to move the file and also to rename the file
  - ```mv <from_folder/file> <to_folder/file>``` 
  - ```mv <file1> <file2> <tofolder>``` - to move more than one file, make a list of file and move to folder.
 
+
 __9. ```cp``` command__
  - to copy a file
 
+
 __10. ```open``` command__
  - to open a file using this command
  - Syntax: ```open <filename>```
 
-__11. ```find``` command
+  
+__11. ```find``` command__
  - used to find files or folders matching a particular search pattern. It searches recursively.
+ - ```file . -name <file_name>``` - to find the file with its name.
  - Example: to find all the files in current directory with extension ```.png``` and also print the relative path. 
-  - ```find . -name '*.png'``` 
+   - Syntax:
+   - ```find . -name '*.png'```
+   - 
+
+
+__12. ```gzip``` command__
+ - to compress a file with extension ``` .gz```
+ - Syntax: 
+   - ```gzip <file_name>``` : using this the original file will be deleted.
+   - ```gzip -c <file_name> > <filename.gz>``` : using ```-c``` option specifies that the output will go to the standard output stream without affecting original file.
+   
+   > or can use -k option 
+   
+   ```gzip -k <file_name>```
+   - ```gzip <file1> <file2>``` : to zip mutiple files
+   - 🟡```gzip -r <folder_name>```: to compress a folder recursively
+   - 🟢```gzip -d <file_name.gz>``` : to decompress a file
+
+
+__13. ```gunzip``` command__
+ - equivalent to ```gzip``` command, but ``` -d``` option is enabled by default.
+ - Syntax: 
+  - ```gunzip [option] [archive name/file name]```
+
+
+__14. ```alias``` command__
+ - to create your command for your convenience.
+ - Example: 
+   - ```alias ll = 'ls -al'``` : use ```ll``` in place of ```ls -al``` command
+ - ```alias``` : *(with no option)* to list all alias defines
+
+
+__15. ```cat``` command__
+ - *SUPER POWERFUL command*
+ - ```cat <file_name>``` : prints a file content
+ - ```cat <file1> <file2>``` : to print multiple file content
+ - ```cat <file1> <file2> > file3``` : to concatenate the content of multiple files into a new one.
+ - ```cat <file1> <file2> >> <file3>``` : to append content of multiple files into new one.
+ - ```cat <file_name> | <another_command>``` : to feed a file's content as input to another command.
+ - ```cat -s <file_name>``` to remove multiple empty lines.
+
+
+__16. ```less``` command__
+ - to watch the file content in an interactive UI
+ - ```less <filename>```
+
+
+__17. ```head``` and ```tail``` command__
+ - ```head``` to print first 10 lines of the file.
+ - ```tail``` to print last 10 lines of the file.
+
+
+__18. ```wc``` command__
+ - helps in counting the lines, words, and characters in a file. Mostly, it is used with pipes ```|``` for counting operation.
+ - It will display the number of lines, words, and bytes from the file.
+ - Syntax: ```wc [option]... [file]...```
+
+
+__19. ```grep``` command__
+ > grep command filters the content of a file which makes search easy.
+ > _grep_ stands for global regular expression print.
+ 
+ - _helpful in day-to-day coding_
+ - Syntax: 
+   - ```command | grep <searchWord>``` : with pipes (case sensitive by default)
+   - ```grep <search_Word> <file_name>``` : without pipes
+   - ```grep -v <search_Word> <file_name>``` : to search for non-matching searched word.
+   - ```grep -i <searchWord> <filename>``` : to filter output in a case-insensitive way.
+
+
+__20. ```sort``` command__
+ - used to sort the list items
+ - ```sort <file_name>``` : by default case sensitive and alphabetic.
+ - ```sort -r <file_name>``` : reverse order sort.
+ -  ```sort --ignore-case <file_name>``` : to sort case insensitive, use ```-n``` to sort numerically.
+ -  ```sort -u <file_name>``` : to remove duplicated.
+ -  Example : ```ls | sort``` : used with list command.
+
+