List of Command-Line Tools - Data Science at the Command Line - page 166

$ help alias
$ alias ll = 'ls -alF'
awk
Pattern scanning and text processing language. Mawk (version 1.3.3) by Mike
Brennan (1994). http://invisible-island.net/mawk .
$ sudo apt-get install mawk
$ man awk
$ seq 5 | awk '{sum+=$1} END {print sum}'
15
aws
Manage AWS Services such as EC2 and S3 from the command line. AWS Command
Line Interface (version 1.3.24) by Amazon Web Services (2014). http://
aws.amazon.com/cli .
$ sudo pip install awscli
$ aws help
$ aws ec2 describe-regions | head -n 5
{
"Regions": [
{
"Endpoint": "ec2.eu-west-1.amazonaws.com",
"RegionName": "eu-west-1"
bash
GNU Bourne-Again SHell. Bash (version 4.3) by Brian Fox and Chet Ramey (2010).
http://www.gnu.org/so ​ ware/bash .
$ sudo apt-get install bash
$ man bash
bc
Evaluate equation from standard input. Bc (version 1.06.95) by Philip A. Nelson
(2006). http://www.gnu.org/so ​ ware/bc .
$ sudo apt-get install bc
$ man bc
$ echo 'e(1)' | bc -l
2.71828182845904523536