5 answers. If your variable is empty somewhere, it’s the same as if you just had the echo command, which just prints the status of echo. This way, if %var2% is empty, only echo var2: will be printed instead of echo off.
Why is ECHO disabled?
5 answers. If your variable is empty somewhere, it’s the same as if you just had the echo command, which just prints the status of echo. This way, if %var2% is empty, only echo var2: will be printed instead of echo off.
What does echo off mean?
echo off. If echo is disabled, the prompt will not appear in the command prompt window. To show the prompt again, type echo on. To prevent all commands in a batch file (including the echo off command) from appearing on the screen, type @ echo off on the first line of the batch file.
What is @echo off in batch file?
@echo off prevents the contents of the command prompt and batch file from being displayed, so only the output is visible. The @ also hides the output of the echo off command.
What is the equivalent of Echo on Windows?
use the /? command option, for example date /? . … Windows and Unix command line equivalents.
| Windows Command | Unix Command | Notes |
|---|---|---|
| Set Path < /td > | echo $PATH | Displays the value of the environment variable using set in Windows. |
How do I stop my phone’s echo?
This is common on mobile phones, iPhones, Androids or Samsung Galaxy. To resolve this issue, ask the participant who is not hearing an echo on their phone to lower the microphone or speaker volume, and then retest the echo on the line.
Why are phone calls ringing?
In many cases, the echo is a symptom of acoustic feedback from the other party’s phone. Your voice is transmitted through the phone system to the other party, the phone’s speaker plays the sound, then the phone’s microphone picks up that sound and it is echoed back to your phone.
Does the echo dot turn off automatically?
With Amazon Echo, the device itself does not turn off completely, but music or other audio signals are automatically turned off. Setting a sleep timer is incredibly easy: all you have to say is “Alexa, set a sleep timer for 30 minutes” (or however long you want).
Should I unplug Alexa at night?
Your Echo will automatically go to sleep when not in use. Turning it off is a personal preference, you can just unplug it if you like. … Otherwise, it just goes into sleep mode when not in use.
How do I turn off the echo?
To prevent these lines from appearing, you have three options.
- Add @echo off to the batch file. If you want to hide all commands and REM lines, add @echo off as the first line of the batch file.
- Replace REM with @REM. …
- Use :: instead of REM.
What is the echo command for?
The echo command in Linux is used to display the text/string line passed as an argument. It is a built-in command mainly used in shell scripts and batch files to display status text on the screen or in a file.
What does the ECHO command do?
echo / Function
What does the echo command do in Windows?
In arithmetic, echo is a command that displays the strings passed to it as arguments. This is a command available in various operating system shells, typically used in shell scripts and batch files to display status text on the screen or in a computer file, or as part of a pipeline’s source.