Install Go Binaries on Raspberry Pi

rpi-golang-install.sh

#!/usr/bin/env bash
# Install Go Binaries on any ARMv6/ARMv7 system.
# Binaries from http://dave.cheney.net/unofficial-arm-tarballs

# Fetch release page and get latest tarball link
LINK=`wget -q -O - https://golang.org/dl/ | grep '\/go.*linux-armv6l\.tar\.gz' | head -1 | sed 's/^\(.*\)\(http[^">]*\)\(.*\)$/\2/'`

# Get Filename
FILENAME=`echo $LINK | sed 's/\(.*\)\(go.*linux-armv6l\.tar\.gz\)/\2/'`

# Download
if [ -f $FILENAME ]; then
    echo "File $FILENAME exists, skip download."
else
    echo "Downloading $LINK"
    wget $LINK
fi

# Backup old files
if [ -d /usr/local/go ]; then
    [ -d /usr/local/go-old ] && rm -rf /usr/local/go-old
    mv /usr/local/go /usr/local/go-old
    echo "Your old go has moved to /usr/local/go-old"
fi

# Install
echo "Intalling..."
tar -zxf $FILENAME -C /usr/local

# Add env
echo "Adding environment variables"
PFDIR=/etc/profile.d
if [ ! -d $PFDIR ]; then
    mkdir -p $PFDIR
fi

if [ -f $PFDIR/goenv.sh ]; then
    rm $PFDIR/goenv.sh
fi

GOENV1="export GOROOT=/usr/local/go"
GOENV2="export PATH=\$PATH:\$GOROOT/bin"

eval $GOENV1
eval $GOENV2

echo "$GOENV1
$GOENV2" >> $PFDIR/goenv.sh

# Finish
echo "Done"
echo `go version`
echo " "
echo "If you cannot run go command, check GOROOT=/usr/local/go in your env, and \$GOROOT/bin in your PATH"