Script Homebrew para reinstalar fórmulas

Question

Eu gostaria de desenvolver um script bash para capturar a fórmula Homebrew atualmente instalada e, em seguida, ser capaz de reinstalar essas fórmulas no caso de precisar reinstalar meu sistema operacional.

Espero combinar esses dois segmentos em um único script parametrizado:

Capture fórmulas atualmente instaladas:

#!/bin/sh

# capture
brew list >> ~/sh.brew.formulas.txt

Instale Homebrew e fórmulas:

#!/bin/sh

# 
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

# get most-recent list of formulas
brew update

# disable macports
# TODO

# process list of formulas that have been installed
for i in $(cat ~/sh.brew.formulas.txt) ; do
  brew install $i
done

Em seguida, ligue para ele:

$ ./brewer.sh archive

$ ./brewer.sh install

Alguma sugestão?

    

Answer 1

Resolvi meu próprio problema aprendendo mais sobre scripts Bash.

O resultado é brewer project .

Bash script to archive or restore a workstation's Homebrew formulas.

Aqui está o código:

#!/bin/sh

# Author:   Craig Buchanan

# Purpose:  Archive currently installed Homebrew formulas to allow them to be reinstalled after a OS failure

# Revision History:
    # 31-OCT-2014 - created
    # 07-NOV-2014 - command-line parameter support

# Enhancements:
# * Homebrew Cask support?

# Reset POSIX variable in case getopts has been used previously in the shell.
OPTIND=1

# Initialize variables:
FORMULAS=~/sh.brew.formulas.txt
verbose=0
show_help=0

#
# heredocs
#
GENERAL_HELP=$(cat << 'EOF'

Usage:

  brewer [options] command

Exmaples:

  brewer archive
  brewer install

Options:

  -h     Display help
  -v     Enable verbose output

EOF)

ARCHIVE_HELP=$(cat << 'EOF'

Usage:

  brewer [options] archive

Exmaples:

  brewer archive
  brewer -f PATH/TO/FILE archive

Options:

  -f     file to use as destination (default: $FORMULAS)


EOF)

INSTALL_HELP=$(cat << 'EOF'

Usage:

  brewer [options] install

Exmaples:

  brewer install
  brewer -f PATH/TO/FILE install

Options:

  -f     file to use as source (default: $FORMULAS)

EOF)

#
# Save list of install Homebrew formulas to a file.
#
function archive() {

    if [ $show_help -eq 1 ]; 
    then
        echo "$ARCHIVE_HELP\n"
        exit 1
    fi

    if [ $verbose -eq 1 ]; 
    then    
        echo "Archiving current list of Homebrew formulas ..."
    fi

    # make back-up current file if it exists
    if [ -f $FORMULAS ]; then

        if [ $verbose -eq 1 ]; 
        then
            echo "Copying existing archive to $(basename $FORMULAS .txt)_$(stat -f "%Sm" -t "%Y%m%dT%H%M%S").txt ..."
        fi
        mv "$FORMULAS" "$(basename $FORMULAS .txt)_$(stat -f "%Sm" -t "%Y%m%dT%H%M%S").txt"
    fi

    # redirect command to a file
    brew list >> $FORMULAS

    if [ $verbose -eq 1 ]; 
    then
        echo "$FORMULAS created."
    fi

}

#
# Install Homebrew, then install formulas.
#
function install() {

    if [ $show_help -eq 1 ]; 
    then
        echo "$INSTALL_HELP\n"
        exit 1
    fi

    # if $FILE doesn't exist, fail
    if [ ! -f $FORMULAS ];
    then
        if [ $verbose -eq 1 ]; 
        then
            echo "$FORMULAS does not exist.  Please run './brewer archive' to create it."
        fi
       exit 2
    fi

    # if Homebrew not installed, install it
    type -P brew &>/dev/null && echo "Homebrew found ..." || {

        echo "Installing Homebrew ..."
        ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

    }

    # get most-recent list of formulas
    if [ $verbose -eq 1 ]; 
    then
        echo "Updating Homebrew ..."
    fi
    brew update

    # TODO: disable macports
    if [ $verbose -eq 1 ]; 
    then
        echo "Disabling Macports ..."
    fi

    if [ $verbose -eq 1 ]; 
    then
        echo "Installing formulas..."
    fi

    # process list of formulas that have been installed
    # ignoring lines that start with an '#'
    for i in $( sed '/^#/ d' < "$FORMULAS") ; do

        if [ $verbose -eq 1 ]; 
        then
            echo "Installing $i ..."
        fi

        # attempt to install formula
        # if error (e.g. alread installed), write error, process next formula
        brew install $i || continue

    done

    if [ $verbose -eq 1 ]; 
    then
        echo "Processing completed."
    fi
}

#
# Process command line
#
while getopts "h?vf:" opt; do

    case "$opt" in
    h|\?)
        show_help=1
        ;;
    v)  verbose=1
        ;;
    f)  FILE=$OPTARG
        ;;
    esac
done

shift $((OPTIND-1))

[ "$1" = "--" ] && shift

# echo "verbose=$verbose, show_help=$show_help, FILE='$FILE', Leftovers: $@"

if [ $# -eq 0 ]
  then
    echo "$GENERAL_HELP\n"
    exit 1
fi

# run command
$1