List of Command-Line Tools - Data Science at the Command Line - page 173

grep
Print lines matching a pattern. Grep (version 2.16) by Jim Meyering (2012). http://
www.gnu.org/so ​ ware/grep .
$ sudo apt-get install grep
$ man grep
head
Output the first part of files. Head (version 8.21) by David MacKenzie and Jim
Meyering (2012). http://www.gnu.org/so ​ ware/coreutils .
$ sudo apt-get install coreutils
$ man head
$ seq 5 | head -n 3
1
2
3
header
Add, replace, and delete header lines. Header by Jeroen H.M. Janssens (2014). https://
github.com/jeroenjanssens/data-science-at-the-command-line .
$ git clone https://github.com/jeroenjanssens/data-science-at-the-command-
line.git
$ header -h
in2csv
Convert common, but less awesome, tabular data formats to CSV. Csvkit (version
0.8.0) by Christopher Groskopf (2014). http://csvkit.readthedocs.org .
$ sudo pip install csvkit
$ in2csv --help
jq
Process JSON. Jq (version jq-1.4) by Stephen Dolan (2014). http://stedo
lan.github.com/jq .
$ # See website for installation instructions
$ # See website for documentation