If You Can Write a Salesforce Formula, You Can Use the Command Line

If you can write a formula
field
pchittum@salesforce.com
@pchittum
Peter Chittum,
Director, Developer Evangelism, EMEA
You can use a Command Line

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Who are you?
Any Computer User
You Want To Use Command Line
You Are Not Sure Where to Start

I'm using a Mac
(and I changed my shell two weeks ago: ohmyzsh)

Myth: The Command Line Is Scary
 > curl https://blixtar-dev-ed.my.salesforce.com/services/data/v39.0/
query?q=SELECT+Id,Name+FROM+Account+LIMIT+1 -H 'Authorization: Bearer
00D24000000IwtW!
AQ4AQMiGG9NfUlO5njwZpODWCazHSUFRgM26olREehLfu9GPqq1JWSTxwUfgncjdET.
13_G0dPm5SobOPuj_F0.vvlU9Ih44'
{"totalSize":1,"done":true,"records":[{"attributes":
{"type":"Account","url":"/services/data/v39.0/sobjects/Account/
001240000050EByAAM"},"Id":"001240000050EByAAM","Name":"DRVA"}]}

Scary!!!
names.txt
James
Colette
Oscar
Edith
 $ sort names.txt
 Colette
 Edith
 James
 Oscar
N
ot

Let's state the obvious (and oversimplify)…
A command line is an app (often called a shell or terminal)
It runs little apps (commands)

How a command works
Input
(STDIN, FILE)
Output
(STDOUT)

Sound familiar?
2017-11-5T12:53:00.000+0000
HOUR(Time_Stamp__c)
12

Commands can be made to run sequentially
Even better...
Commands can talk to each other!
It's called "piping"

Semicolon: Do one thing ; then do
another
;

Only do the second if no error on first
&&

Pipe: Send output from the first to the
second
|

What does this do?
TEXT( HOUR( TIMEVALUE(Date_Field__c) ) )
 Date_Field__c = 2018-01-13T23:21:48.000+0000
 '23'

Deconstructed
Date_Field__c = 2018-01-13T23:21:48.000+0000
TIMEVALUE(Date_Field__c)
HOUR( 23:21:48.000+0000 )
TEXT( 23 )
'23'

Another Way to Represent This
Date_Field__c = 2018-01-13T23:21:48.000+0000
Date_Field__c TIMEVALUE() HOUR()
TEXT()
23:21:48.000+0000 23
'23'

Command Line Pipe Symbol
Date_Field__c = 2018-01-13T23:21:48.000+0000
TIMEVALUE(Date_Field__c) | HOUR() | TEXT()
'23'

There are also parameters
Input Output
Parameters

Redirect: Write output from first thing
to a file
(Careful…this wipes the previous contents of the file)
>

Append: Write output from first thing to
the end of a file
>>

cd
ls
mkdir
rmdir
touch
rm
mv
cat
echo
File System Basics
change directory
list files and directories
make a directory/folder
remove a directory
make a new file
remove a file
move a file
concatenate two files (but also reads a single file to
STDOUT)
write to STDOUT

Demo
Files, Folders, Input, Output

alias
create a shortcut for a more complicated command

different ways to read a file
cat
head
tail

dog
...actually there is no 'dog', but you can do this:
$ alias dog='cat'
turn your cat into dog

wc
not the loo…
word count
counts stuff

grep
Search in files
(global regular expression print)

sed
Modify data in a stream
(stream editor)

Demo
cat, head, tail, wc, grep, sed

Salesforce DX CLI
CLI for accessing Salesforce APIs
Unix, CMD, PowerShell, WSL all supported.
$ sfdx force --help

 $ curl https://blixtar-dev-ed.my.salesforce.com/services/data/v39.0/
query?q=SELECT+Id,Name+FROM+Account+LIMIT+1 -H 'Authorization: Bearer
00D24000000IwtW!
AQ4AQMiGG9NfUlO5njwZpODWCazHSUFRgM26olREehLfu9GPqq1JWSTxwUfgncjdET.
13_G0dPm5SobOPuj_F0.vvlU9Ih44'
{"totalSize":1,"done":true,"records":[{"attributes":
{"type":"Account","url":"/services/data/v39.0/sobjects/Account/
001240000050EByAAM"},"Id":"001240000050EByAAM","Name":"DRVA"}]}
 $ sfdx force:data:soql:query -u blixtar -q "SELECT Id,Name FROM Account
LIMIT 1"
 ID NAME
 !!!!!!!!!!!!!!!!!! !!!!
 001240000050EByAAM DRVA
 Total number of records retrieved: 1.
Instead of this:
You can do this:

Demo
Working with Salesforce DX CLI

Mac/Unix v Windows CMD
Windows is case insensitive
Unix file permissions
sudo versus Run As Administrator

All the other stuff
Package managers (apt, brew, chocolatey, npm)
Automating (cron, shell scripts)
Source Control (git)
Powershell, CMD, cygwin (Windows shells)
Z shell (popular powerful Unix shell)
Task Runners (gulp, grunt, …)
awk (Unix programming language)
REPLs (interactive mode programming)

More About Command Lines
CodeAcademy's Learn the Command Line course
https://www.codecademy.com/courses/learn-the-
command-line
Brief History of Command Lines
http://bit.ly/brief-history-cmd-lines
Windows and Unix Command Line equivalents:
http://bit.ly/win2unixcmd

My Stuff
Slides:
slideshare.net/chittum
Demo:
salesforce.quip.com/rFA0Af9rhUza

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If You Can Write a Salesforce Formula, You Can Use the Command Line

If You Can Write a Salesforce Formula, You Can Use the Command Line

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