tenv 0.2.0

Small CLI for running commands with temporary environment variables
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# tenv (temporary environment)

Small CLI app for running commands with temporary environment variables. Super useful on Windows/Powershell where you can't easily set temp variables inline with command being run.

## Uses

### Running commands

Bash
```bash
# Add ~/hugo to PATH and run `hugo` program
tenv -p ~/hugo hugo

```
Powershell
```bash
# Add C:\dev\hugo to PATH and run `hugo` program

tenv -p C:\dev\hugo hugo
```

Especially useful for RUST_BACKTRACE on Powershell
```powershell
tenv -e RUST_BACKTRACE=1 cargo -- run
```
### Shell environment

Bash
```bash
# spawn new bash shell with env vars APPLES="Red" and BANANAS="Yellow"

tenv -e APPLES=Red -e BANANAS=Yellow bash
```
Powershell
```powershell
<# spawn new Powershell with env vars APPLES="Red" and BANANAS="Yellow" #>
tenv -e APPLES=Red -a BANANAS=Yellow powershell
```

## Caveat

Because some shell commands aren't directly callable from Command::new() (i.e. the `cat` alias on Powershell), tenv runs programs directly through powershell on Windows and bash otherwise.