To permanently update ~/.profile with source, only working on manual input. Also reboot of the whole system won‘t update ~/.profile and i need to update it manual.
Is there a special code style to use it as working code inside a bash/shell script or is this special code not intended to be used in automated scripts?
Need it to automate installation of golang.
In the following code the line "source ~/.profile" won't work, and without any error messages, the rest is working fine:
#!/bin/bash
sudo apt update
sudo apt -y upgrade
cd ~
curl -O https://dl.google.com/go/go1.12.5.linux-amd64.tar.gz
tar xvf go1.12.5.linux-amd64.tar.gz
sudo chown -R root:root ./go
sudo mv go /usr/local
cd ~
sudo rm go1.12.5.linux-amd64.tar.gz
sudo echo "export GOPATH=\$HOME/work" >> ~/.profile
sudo echo "export PATH=\$PATH:/usr/local/go/bin:\$GOPATH/bin" >> ~/.profile
source ~/.profile
Preferred:
Source the script itself rather than running it - then the commands in the script are run in the current shell, including the source ~/.profile.
Alternative (since this replaces the running shell, history, variable values, and other state will be lost. So there should be a very good reason to use this method):
Use exec bash or something similar instead of source ~/.profile - this replaces the currently running Bash with another instance which will itself load the new .profile.
Here is a refactoring which defers the decision to the user and cleans up the script somewhat.
#!/bin/bash
# Put this in a variable so there is only one place to update
tarball='go1.12.5.linux-amd64.tar.gz'
sudo apt update
sudo apt -y upgrade
# cd || why would you?
curl -O "https://dl.google.com/go/$tarball"
tar xvf "$tarball"
sudo chown -R root:root ./go
sudo mv go /usr/local
rm "$tarball"
printf '%s
' "export GOPATH=\$HOME/work" \
"export PATH=\$PATH:/usr/local/go/bin:\$GOPATH/bin" >> ~/.profile
echo "$0: done. source ~/.profile or exec bash to activate new settings." >&2