Shell - Batch Characters - Characters that causes errors when tried to echo -

[Shell] - Batch Characters - Characters that causes errors when tried to echo - - Printable Version

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+---- Thread: [Shell] - Batch Characters - Characters that causes errors when tried to echo - (/showthread.php?tid=2977548)

- Batch Characters - Characters that causes errors when tried to echo - - DAVEologist - Oct 28, 2012

What are characters that would cause errors when tried echoing?
For example...

Code 
echo Hello! I love putting |'s on my thread titles!

pause

It would close automatically because of the pipe, (|) that I put.
So that's only one character. Any other characters?

* - AMDjack - Oct 28, 2012

(Oct 28, 2012 12:43 AM)DAVEologist Wrote: What are characters that would cause errors when tried echoing?
For example...

Code
echo Hello! I love putting |'s on my thread titles! pause

It would close automatically because of the pipe, (|) that I put.
So that's only one character. Any other characters?

To get past that put a ^ infront of it IE: ^| and it will work.

* - WOLGA - Oct 28, 2012

He trying to figure out the characters that give the error.

try echoing these

:[]zxcvbnm,.'/@!\#$%^&*()_;{}<>"?+àáâãäåæçèéêëìíîïðñòóôõöøœùúûüýÿþßšžāăąćċčďēěėęğġģħīįiıĳķĺļľłńņňőŕřśşťūůűųźżƒǆǳțαβγδεζηθικλμνξοπρστυφχψωάέήίόύώϊϋΐΰς΄΅абвгдеёжзийклмнопрстуфхцчшщъыьэюяÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØŒÙÚÛÜÝŸÞßŠŽĀĂĄĆĊČĎĒĚĖĘĞĠĢĦĪĮİIĲĶĹĻĽŁŃŅŇŐŔŘŚŞŤŪŮŰŲŹŻƒǅǲȚΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩΆΈΉΊΌΎΏΪΫΐΰςАБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ¿¡←→↑↓√@§¶†‡|¦–—¤$¢€£¥™©®×÷=±∞ƒºª«»~„"“”^ˇ˘˙¸˛˜′″µ°¹²³♭♪•…¬¯%‰¼½¾⇒⇔●◆*****▲▼☆★♀♂

* - DAVEologist - Oct 28, 2012

(Oct 28, 2012 01:39 AM)Qwertyuiopasdfghjklzxc Wrote: He trying to figure out the characters that give the error.

try echoing these

:[]zxcvbnm,.'/@!\#$%^&*()_;{}<>"?+àáâãäåæçèéêëìíîïðñòóôõöøœùúûüýÿþßšžāăąćċčďēěėęğġģħīįiıĳķĺļľłńņňőŕřśşťūůűųźżƒǆǳțαβγδεζηθικλμνξοπρστυφχψωάέήίόύώϊϋΐΰς΄΅абвгдеёжзийклмнопрстуфхцчшщъыьэюяÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØŒÙÚÛÜÝŸÞßŠŽĀĂĄĆĊČĎĒĚĖĘĞĠĢĦĪĮİIĲĶĹĻĽŁŃŅŇŐŔŘŚŞŤŪŮŰŲŹŻƒǅǲȚΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩΆΈΉΊΌΎΏΪΫΐΰςАБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ¿¡←→↑↓√@§¶†‡|¦–—¤$¢€£¥™©®×÷=±∞ƒºª«»~„"“”^ˇ˘˙¸˛˜′″µ°¹²³♭♪•…¬¯%‰¼½¾⇒⇔●◆*****▲▼☆★♀♂

Uhhh... can you please choose non-unicode text? I can't save my Batch file with those.

* - SoulByte - Oct 28, 2012

The characters are these: ^<>%&|

The quote character " can also cause trouble in certain circumstances though not in echo.
The following script would crash:

Code 
set abc=hello"world

if "%abc%"=="bla" echo Bla

Parentheses () can also ruin grouping of commands.
This script would also crash as the ) in the echo would end the grouping before the programmer had intended.

Code 
if 1==1 (

  echo Hello ) World

  pause>nul

  )

And you can't display ! with delayedexpansion enabled.

Code 
setlocal enabledelayedexpansion

echo Hello World!

You can use the escape character ^ to display these special characters (except !).

* - DAVEologist - Oct 28, 2012

(Oct 28, 2012 03:17 AM)SoulByte Wrote: The characters are these: ^<>%&|

The quote character " can also cause trouble in certain circumstances though not in echo.
The following script would crash:

Code
set abc=hello"world if "%abc%"=="bla" echo Bla

Parentheses () can also ruin grouping of commands.
This script would also crash as the ) in the echo would end the grouping before the programmer had intended.

Code
if 1==1 ( echo Hello ) World pause>nul )

And you can't display ! with delayedexpansion enabled.

Code
setlocal enabledelayedexpansion echo Hello World!

You can use the escape character ^ to display these special characters (except !).

Cool. Very useful indeed. :)
Thanks for the share!

* - G T X - Oct 28, 2012

(Oct 28, 2012 03:17 AM)SoulByte Wrote: And you can't display ! with delayedexpansion enabled.

You can use the escape character ^ to display these special characters (except !).

You can display the exclamation mark by escaping it three times.

Code 
@echo off

setlocal enabledelayedexpansion

echo Hello World^^^!

* - White Light - Oct 28, 2012

(Oct 28, 2012 01:32 PM)G T X Wrote: You can display the exclamation mark by escaping it three times.

Code
@echo off setlocal enabledelayedexpansion echo Hello World^^^!

I tried that before and it didn't work for me...the only way I could get it to work was to disable setlocal.

* - SIM-1073426 - Oct 28, 2012

(Oct 28, 2012 01:32 PM)G T X Wrote: You can display the exclamation mark by escaping it three times.

Code
@echo off setlocal enabledelayedexpansion echo Hello World^^^!

Actually, you only need to escape it two times.

Code 
@echo off

setlocal enabledelayedexpansion

echo Hello World^^!

* - White Light - Oct 28, 2012

(Oct 28, 2012 02:48 PM)Aces. Wrote: Actually, you only need to escape it two times.

Code
@echo off setlocal enabledelayedexpansion echo Hello World^^!

Since the normal functionality of the caret would cause it to protect itself, then it later has the ability to protect the ! then I guess that would be the easiest solution. Any more than 3 would cause extra carets to be displayed, and the third would do nothing (as it doesn't normally show up when it is protecting something).