How can I implement install-or-upgrade for brew recipes?

问题

I want to install a brew recipe or upgrade it if is already installed using bash.

The command is supposed to return a non zero exit code only if at the end the recipe is not installed.

PS. One should remark the brew install xxx return error code if xxx is already installed.

回答1:

Background: https://github.com/Homebrew/legacy-homebrew/issues/30939

I just needed this also. This seems to work.

#!/usr/bin/env bash

package=$1
pkg_installed=false
pkg_updated=false
verbose=true

# TODO: ensure valid input

brew update >/dev/null 2>&1
list_output=`brew list | grep $package`
outdated_output=`brew outdated | grep $package`

# now enable error checking
set -e

if [[ ! -z "$list_output" ]]; then
    pkg_installed=true
    $verbose && echo "package is installed"
    if [[ -z "$outdated_output" ]]; then
        pkg_updated=true
        $verbose && echo "package is updated"
    else
        $verbose && echo "package is not updated. updating..."
        brew upgrade $package
    fi
else
    $verbose && echo "package is not installed. installing..."
    brew install $package
fi

Usage:

> brew outdated
jemalloc (4.3.0) < 4.3.1
terraform (0.7.9) < 0.7.10
> brew_install_or_upgrade.sh jemalloc; echo $?
package is installed
package is not updated. updating...
==> Upgrading 1 outdated package, with result:
jemalloc 4.3.1
==> Upgrading jemalloc
==> Downloading https://homebrew.bintray.com/bottles/jemalloc-4.3.1.el_capitan.bottle.tar.gz
######################################################################## 100.0%
==> Pouring jemalloc-4.3.1.el_capitan.bottle.tar.gz
🍺  /usr/local/Cellar/jemalloc/4.3.1: 16 files, 1.4M
0
> brew_install_or_upgrade.sh jemalloc; echo $?
package is installed
package is updated
0
>

来源：https://stackoverflow.com/questions/39037601/how-can-i-implement-install-or-upgrade-for-brew-recipes

标签

bash

homebrew