Helpful Commands

This is a list of helpful commands that you may find useful.

Aliases

Shell command aliases that I frequently use. Add these to your .bashrc or .zshrc file, and then run source ~/.bashrc or source ~/.zshrc to apply the changes.

alias gita="git add ."
alias ls="ls -a -l"
alias gits="git status"
alias gitpl="git pull"
alias gitps="git push --follow-tags"
alias yarnu="yarn upgrade-interactive"
alias yarnd="yarn run dev"
alias yarnr="yarn run release patch"

Disk Usage

To find the largest files and directories in a directory
```
 du -ha * | sort -h | tail -n 20
```
- du Disk usage, human-readable, include files.
- sort Sort, human-numeric-sort
- tail Show end of file, 20 lines.

Docker

Get shell access to a running container
```
docker exec -ti <container_name> sh
```

Get shell access to an image

docker run --rm -it --entrypoint sh <image_name>

Git

Remove branches not on remote

git fetch -p && for branch in $(git for-each-ref --format '%(refname) %(upstream:track)' refs/heads | awk '$2 == "[gone]" {sub("refs/heads/", "", $1); print $1}'); do git branch -D $branch; done

Remove files from the repository that are present in .gitignore
```
git rm -r --cached .
git add .
```
Selectively add or overwrite a file from another branch
```
git checkout --patch <branch> <file>
```
Revert a file to the state it was at a commit
```
git checkout <commit hash> -- <file>
```

Clone into the current directory

git init
git remote add origin <url_of_repository>
git fetch origin
git checkout -b main --track origin/main

Discard all changes since last commit
```
git stash --include-untracked
```
Compare a file between two branches
```
git diff <branch1>..<branch2> <file>
```

Grep

Search for a time-stamp in a directory. (Where 24 is the year, 06 is the month, 13 is the day, and 17:20 is the local time)
```
grep -R -E "24(\-|\/)?06(\-|\/)?13(T| )(17|21)\:20" .
```
- Recursive, match pattern

MacOS Specific

Dock Hide/Show Speed

defaults write com.apple.dock autohide-delay -int 0
defaults write com.apple.dock autohide-time-modifier -float 0.15
killall Dock

You can change the values for 0 and 0.4 to see if a different setting works better for you.

Remember to change int to float if you want to use a float instead of 0.

If you don’t like it, you can undo the changes using these commands:
```
defaults delete com.apple.dock autohide-delay
defaults delete com.apple.dock autohide-time-modifier
killall Dock
```

SCP

Copy a file from an SSH source

scp username@host:source-path destination-path