protoc-gen-go: program not found or is not executable

There are two ways to install the protobuf compiler, if you're on Ubuntu you can use this,

sudo apt install protobuf-compiler

Then of course there's the standard way,

go get -u github.com/golang/protobuf/{proto,protoc-gen-go}

Here forward it's just adding the path. Assuming when you installed Go you did this,

echo 'export GOPATH=$HOME/Go' >> $HOME/.bashrc
source $HOME/.bashrc

Now you can just extend this,

echo 'export PATH=$PATH:$GOPATH/bin' >> $HOME/.bashrc
source $HOME/.bashrc

Strangely protoc can't expand ~.

Resolved by following the steps:

Install go library using: go get -u github.com/golang/protobuf/{proto,protoc-gen-go}

export GO_PATH=~/go
export PATH=$PATH:/$GO_PATH/bin

Reference: Unable to build protobuf to go endpoint

From the github repo this solution has worked for me.

Go version is go version go1.14.1 linux/amd64

Add this to .bashrc and source it.

export GOROOT=/usr/local/go
export GOPATH=$HOME/go
export GOBIN=$GOPATH/bin
export PATH=$PATH:$GOROOT:$GOPATH:$GOBIN

https://github.com/golang/protobuf/issues/795

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