How to programmatically extract / unzip a .7z (7-zip) file with R

Question

I\'m trying to automate the extraction of a number of files compressed with 7-zip. I need to automate this process, because a) there are many years of data I\'d like to unl

Answer 1

If you have 7z executable in your path, you can simple use system command

system('7z e -o <output_dir> <archive_name>')

Answer 2

This can be done with the archive package.

library(archive)
tf <- tempfile() ; td <- tempdir()
file.path <- "ftp://ftp.ibge.gov.br/Orcamentos_Familiares/Pesquisa_de_Orcamentos_Familiares_2008_2009/Microdados/Dados.zip"
download.file( file.path , tf , mode = "wb" )
archive(tf)

See https://github.com/jimhester/archive