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

# Add ~/hugo to PATH and run `hugo` program

tenv -p ~/hugo hugo

Powershell

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

tenv -p C:\dev\hugo hugo

Especially useful for RUST_BACKTRACE on Powershell

tenv -e RUST_BACKTRACE=1 cargo -- run

Shell environment

Bash

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

tenv -e APPLES=Red -e BANANAS=Yellow bash

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.