To create an empty file
```
 touch <filename>
```
To create multiple files
```
 touch file{1..5}.txt
```
List all the files including hidden files also
```
 ls -la
```
create a nested directory
```
 mkdir -p a/b/c/d/e
```
To view a file
```
 cat file.txt
```
To add output to the file
```
 echo "pavan" > file1.txt
```
To view the history of commands
```
 history
```
To remove a file
```
 rm file1.txt
```
To remove a file as nested
```
 rm -r A
```
To open a text editor
```
vim file1.txt
```
To show starting 2 records of the file
```
head -2 file1.txt
```
To show the last 2 records of the file
```
tail -2 file1.txt
```
To add a user
```
sudo useradd pavan
```
To add a user by creating a directory
```
sudo useradd -m pavan
```
To copy a file from one folder to another
```
cp folder1/testfile.txt folder2/
```
To move a file from one folder to another
```
mv folder1/file1.txt folder2/
```
To view all users
```
sudo cat /etc/passwd
```
To switch user
```
su pavan
```
To create a password for the user
```
sudo passwd pavan
```
To exit from the user
```
exit
```
To update packages
```
sudo apt update
```
To Upgrade packages
```
sudo apt upgrade
```
To install packages
```
sudo apt install docker.io
```
To uninstall packages
```
sudo apt purge docker.io
```

To add a username

 git config --global user.name "username"

To add an email
```
git config --global user.email "email"
```
To create a new branch
```
git checkout -b dev
```
To switch to a new branch
```
git checkout dev
```
To show the status of the branch
```
git branch
```
To get remote repo to local
```
git pull origin main
```
To add changes from the local to the remote repo
```
git push origin main
```
To delete unwanted commit from log
```
git revert <commit ID>
```
To reset the file to the previous version
```
git reset <commit ID>
```
To ignore the files which don't want to track
```
gitignore
```
To merge a branch
```
git merge dev
```
To reduce the commit history
```
git --squash
```
To maintain remote and local history in a linear manner
```
git --rebase master
```
To pick any specific commit ID
```
git cherry-pick <commit ID>
```
To save the working directory at the temp location without committing
```
git stash
```
To get back the file from the temp location.
```
git stash pop
```

Day 12 - Cheatsheet for Linux and Git