# should exist
Sys.which("bash")## bash
## "/bin/bash"
Sys.which("sh")## sh
## "/bin/sh"
Does bash work?
echo hello world
echo 'a b c' | sed 's/ /\|/g'
# number of lines
awk 'END{print NR;}' 027-engine-bash.Rmd## hello world
## a|b|c
## 23
How about sh?
# run wc on all engine examples
ls | grep engine | xargs wc## 108 208 1423 023-engine-python.md
## 65 165 1292 023-engine-python.Rmd
## 17 38 162 024-engine-awk.md
## 11 41 252 024-engine-awk.Rmd
## 13 21 128 025-engine-ruby.md
## 7 17 109 025-engine-ruby.Rmd
## 14 37 235 026-engine-haskell.md
## 8 37 267 026-engine-haskell.Rmd
## 74 194 1382 027-engine-bash.md
## 23 58 352 027-engine-bash.Rmd
## 27 35 222 028-engine-perl.md
## 14 26 172 028-engine-perl.Rmd
## 129 354 2645 029-engine-Rcpp.md
## 97 345 2685 029-engine-Rcpp.Rmd
## 23 56 528 057-engine-dot.md
## 18 62 474 057-engine-dot.Rmd
## 40 183 1371 058-engine-tikz.md
## 35 193 1346 058-engine-tikz.Rmd
## 15 67 425 060-engine-sas.md
## 13 72 537 060-engine-sas.Rmd
## 64 136 1043 080-engine-coffeescript.md
## 29 98 877 080-engine-coffeescript.Rmd
## 844 2443 17927 total