not able to install twitteR through github

[AshwiniRS]

install_github("geoffjentry/twitteR")

When I use the above command, I get following warning -

Downloading GitHub repo geoffjentry/twitteR@master
from URL https://api.github.com/repos/geoffjentry/twitteR/zipball/master
Installing twitteR
trying URL 'https://cran.cnr.berkeley.edu/src/contrib/rjson_0.2.15.tar.gz'
Content type 'application/x-gzip' length 98905 bytes (96 KB)

downloaded 96 KB

sh: 1: /bin/gtar: not found
sh: 1: /bin/gtar: not found
Error in system(cmd, intern = TRUE) : error in running command
In addition: Warning message:
In utils::untar(src, exdir = target, compressed = "gzip") :
‘/bin/gtar -xf '/tmp/Rtmp0cbchW/rjson_0.2.15.tar.gz' -C '/tmp/Rtmp0cbchW/devtools69303592ae94'’ returned error code 127

Can anyone help me on this?

[lgheorma]

Try this code
install.packages("twitteR")

[jcolomb]

it seems the latest version on github has problems indeed. strange since building from the repo works...