PRODUCTS
Products Overview
Mathematica
Mathematica for Students
Mathematica Home Edition
Wolfram
CDF Player
(free download)
Computable Document Format (CDF)
web
Mathematica
grid
Mathematica
Wolfram
Workbench
Mathematica
Add-Ons
Wolfram|Alpha Products
SOLUTIONS
Solutions Overview
Engineering
Aerospace Engineering & Defense
Chemical Engineering
Control Systems
Electrical Engineering
Image Processing
Industrial Engineering
Materials Science
Mechanical Engineering
Operations Research
Optics
Petroleum Engineering
Biotechnology & Medicine
Bioinformatics
Medical Imaging
Finance, Statistics & Business Analysis
Actuarial Sciences
Data Analysis & Mining
Econometrics
Economics
Financial Engineering & Mathematics
Financial Risk Management
Statistics
Software Engineering & Content Delivery
Authoring & Publishing
Interface Development
Software Engineering
Web Development
Science
Astronomy
Biological Sciences
Chemistry
Environmental Sciences
Geosciences
Social & Behavioral Sciences
Design, Arts & Entertainment
Game Design, Special Effects & Generative Art
Education
STEM Education Initiative
Higher Education
Community & Technical College Education
Primary & Secondary Education
Students
Technology
Computable Document Format (CDF)
High-Performance & Parallel Computing (HPC)
See Also: Technology Guide
PURCHASE
Online Store
Other Ways to Buy
Volume & Site Licensing
Contact Sales
Software
Service
Upgrades
Training
Books
SUPPORT
Support Overview
Knowledge Base
Learning Center
Community & Forums
Training & Free Seminars
Does My Site Have a License?
Wolfram User Portal
COMPANY
About Wolfram Research
News & Events
Wolfram Blog
Partnerships
Employment Opportunities
History of
Mathematica
Stephen Wolfram's Home Page
Contact Us
OUR SITES
All Sites
Wolfram|Alpha
Demonstrations Project
MathWorld
Integrator
Wolfram Functions Site
Mathematica Journal
Wolfram Media
Wolfram
Tones
Wolfram Science
Stephen Wolfram
DOCUMENTATION CENTER SEARCH
New to
Mathematica
?
Find your learning path
»
Mathematica
>
Systems Interfaces & Deployment
>
Standalone Mathematica Kernels
>
$Echo
>
Mathematica
>
Core Language
>
Package Development
>
Standalone Mathematica Kernels
>
$Echo
>
Mathematica
>
Systems Interfaces & Deployment
>
Mathematica Sessions
>
Session Customization
>
Standalone Mathematica Kernels
>
$Echo
>
BUILT-IN MATHEMATICA SYMBOL
The Main Loop
Tutorials »
|
$Urgent
See Also »
|
Standalone Mathematica Kernels
More About »
$Echo
$Echo
gives a list of files and pipes to which all input is echoed.
MORE INFORMATION
You can use
$Echo
to keep a file of all your input commands.
EXAMPLES
CLOSE ALL
Basic Examples
(1)
Echo input to a temporary file:
Get the file name:
Append the stream to the list of streams that input is being echoed to:
Enter commands in cells with
style:
Restore
$Echo
to its default, and close the stream:
Show the contents of the file:
Echo input to a temporary file:
In[1]:=
Get the file name:
In[2]:=
Out[2]=
Append the stream to the list of streams that input is being echoed to:
In[3]:=
Enter commands in cells with
style:
In[4]:=
Out[4]=
In[5]:=
Out[5]=
Restore
$Echo
to its default, and close the stream:
In[6]:=
Out[6]=
Show the contents of the file:
In[7]:=
SEE ALSO
$Urgent
TUTORIALS
The Main Loop
MORE ABOUT
Standalone
Mathematica
Kernels
New in 1