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Improve Bash alias 

This will take into account nested directories inside your main project
directory
Daniel Li 2018-07-26 16:13:07 +01:00 committed by Jordan Harband
parent 355c4c7915
commit e06f735776
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@ -386,30 +386,59 @@ If you prefer a lighter-weight solution, the recipes below have been contributed
Put the following at the end of your `$HOME/.bashrc`: Put the following at the end of your `$HOME/.bashrc`:
```bash ```bash
find-up () {
path=$(pwd)
while [[ "$path" != "" && ! -e "$path/$1" ]]; do
path=${path%/*}
done
echo "$path"
}
cdnvm(){ cdnvm(){
cd $@ cd $@;
if [[ -f .nvmrc && -s .nvmrc && -r .nvmrc ]]; then nvm_path=$(find-up .nvmrc | tr -d '[:space:]')
<.nvmrc nvm install;
elif [[ $(nvm current) != $(nvm version default) ]]; then # If there are no .nvmrc file, use the default nvm version
if [[ ! $nvm_path = *[^[:space:]]* ]]; then
declare default_version;
default_version=$(nvm version default);
# If there is no default version, set it to `node`
# This will use the latest version on your machine
if [[ $default_version == "N/A" ]]; then
nvm alias default node;
default_version=$(nvm version default);
fi
# If the current version is not the default version, set it to use the default version
if [[ $(nvm current) != "$default_version" ]]; then
nvm use default; nvm use default;
fi fi
elif [[ -s $nvm_path/.nvmrc && -r $nvm_path/.nvmrc ]]; then
declare nvm_version
nvm_version=$(<"$nvm_path"/.nvmrc)
# Add the `v` suffix if it does not exists in the .nvmrc file
if [[ $nvm_version != v* ]]; then
nvm_version="v""$nvm_version"
fi
# If it is not already installed, install it
if [[ $(nvm ls "$nvm_version" | tr -d '[:space:]') == "N/A" ]]; then
nvm install "$nvm_version";
fi
if [[ $(nvm current) != "$nvm_version" ]]; then
nvm use "$nvm_version";
fi
fi
} }
alias cd='cdnvm' alias cd='cdnvm'
``` ```
This alias would automatically detect a `.nvmrc` file in the directory you're `cd`ing into, and switch to that version. And when you `cd` back, it will automatically switch back to the `default` version. This alias would search 'up' from your current directory in order to detect a `.nvmrc` file. If it finds it, it will switch to that version; if not, it will use the default version.
If you prefer one-liners:
```
alias cd='cdnvm(){ cd $@; if [[ -f .nvmrc && -s .nvmrc && -r .nvmrc ]]; then <.nvmrc nvm install; elif [[ $(nvm current) != $(nvm version default) ]]; then nvm use default; fi; };cdnvm'
```
You may also run this directly on your terminal:
```bash
$ echo 'alias cd='\''cdnvm(){ cd $@; if [[ -f .nvmrc && -s .nvmrc && -r .nvmrc ]]; then <.nvmrc nvm install; elif [[ $(nvm current) != $(nvm version default) ]]; then nvm use default; fi; };cdnvm'\''' >> ~/.bashrc
```
#### zsh #### zsh