I can't understand choice error codes of batch
If I have a code like this:
@echo off
choice /C BL /M "Clear screen or list actual directory"
if errorlevel 2 goto l
if errorlevel 1 goto b
:l
tree /f
goto final
:b
cls
goto final
:final
I know this actually works, but I'm confused about one thing about the errorlevel parts.
I wrote first, the same code, but like this:
if errorlevel 1 goto l
if errorlevel 2 goto b
And that way it won't work properly It will only remember the errorcode 1. If you press the second option is not working.
I'm really wondering why the order of the errors matters, if a batch its supposed to execute line by line, or am i wrong?
In a nutshell, what I want to understand is how the error codes work here
batch-file if-statement cmd choice
edited Nov 28 '18 at 0:28
aschipfl
19.1k92956
asked Nov 27 '18 at 23:11
DaburuKaoDaburuKao
435
add a comment |
If I have a code like this:
@echo off
choice /C BL /M "Clear screen or list actual directory"
if errorlevel 2 goto l
if errorlevel 1 goto b
:l
tree /f
goto final
:b
cls
goto final
:final
I know this actually works, but I'm confused about one thing about the errorlevel parts.
I wrote first, the same code, but like this:
if errorlevel 1 goto l
if errorlevel 2 goto b
And that way it won't work properly It will only remember the errorcode 1. If you press the second option is not working.
I'm really wondering why the order of the errors matters, if a batch its supposed to execute line by line, or am i wrong?
In a nutshell, what I want to understand is how the error codes work here
batch-file if-statement cmd choice
edited Nov 28 '18 at 0:28
aschipfl
19.1k92956
asked Nov 27 '18 at 23:11
DaburuKaoDaburuKao
435
2
The classic form withif errorlevel 1actually is evaluated asif errorlevel is 1 or greaterso with the lower number first the 2nd if isn't executed at all.
– LotPings
Nov 27 '18 at 23:25
If errorlevel 1 If not errorlevel 2will only fire on 1.
– CatCat
Nov 27 '18 at 23:39
2
From the Choice help file: NOTE:The ERRORLEVEL environment variable is set to the index of the key that was selected from the set of choices. The first choice listed returns a value of 1, the second a value of 2, and so on. If the user presses a key that is not a valid choice, the tool sounds a warning beep. If tool detects an error condition, it returns an ERRORLEVEL value of 255. When you use ERRORLEVEL parameters in a batch program, list them in decreasing order.
– Squashman
Nov 27 '18 at 23:41
add a comment |
If I have a code like this:
@echo off
choice /C BL /M "Clear screen or list actual directory"
if errorlevel 2 goto l
if errorlevel 1 goto b
:l
tree /f
goto final
:b
cls
goto final
:final
I know this actually works, but I'm confused about one thing about the errorlevel parts.
I wrote first, the same code, but like this:
if errorlevel 1 goto l
if errorlevel 2 goto b
And that way it won't work properly It will only remember the errorcode 1. If you press the second option is not working.
I'm really wondering why the order of the errors matters, if a batch its supposed to execute line by line, or am i wrong?
In a nutshell, what I want to understand is how the error codes work here
batch-file if-statement cmd choice
edited Nov 28 '18 at 0:28
aschipfl
19.1k92956
asked Nov 27 '18 at 23:11
DaburuKaoDaburuKao
435
If I have a code like this:
@echo off
choice /C BL /M "Clear screen or list actual directory"
if errorlevel 2 goto l
if errorlevel 1 goto b
:l
tree /f
goto final
:b
cls
goto final
:final
I know this actually works, but I'm confused about one thing about the errorlevel parts.
I wrote first, the same code, but like this:
if errorlevel 1 goto l
if errorlevel 2 goto b
And that way it won't work properly It will only remember the errorcode 1. If you press the second option is not working.
I'm really wondering why the order of the errors matters, if a batch its supposed to execute line by line, or am i wrong?
In a nutshell, what I want to understand is how the error codes work here
batch-file if-statement cmd choice
batch-file if-statement cmd choice
edited Nov 28 '18 at 0:28
aschipfl
19.1k92956
asked Nov 27 '18 at 23:11
DaburuKaoDaburuKao
435
edited Nov 28 '18 at 0:28
aschipfl
19.1k92956
asked Nov 27 '18 at 23:11
DaburuKaoDaburuKao
435
edited Nov 28 '18 at 0:28
aschipfl
19.1k92956
edited Nov 28 '18 at 0:28
aschipfl
19.1k92956
edited Nov 28 '18 at 0:28
aschipfl
19.1k92956
19.1k92956
asked Nov 27 '18 at 23:11
DaburuKaoDaburuKao
435
asked Nov 27 '18 at 23:11
DaburuKaoDaburuKao
435
asked Nov 27 '18 at 23:11
DaburuKaoDaburuKao
435
435
2
The classic form withif errorlevel 1actually is evaluated asif errorlevel is 1 or greaterso with the lower number first the 2nd if isn't executed at all.
– LotPings
Nov 27 '18 at 23:25
If errorlevel 1 If not errorlevel 2will only fire on 1.
– CatCat
Nov 27 '18 at 23:39
2
From the Choice help file: NOTE:The ERRORLEVEL environment variable is set to the index of the key that was selected from the set of choices. The first choice listed returns a value of 1, the second a value of 2, and so on. If the user presses a key that is not a valid choice, the tool sounds a warning beep. If tool detects an error condition, it returns an ERRORLEVEL value of 255. When you use ERRORLEVEL parameters in a batch program, list them in decreasing order.
– Squashman
Nov 27 '18 at 23:41
add a comment |
2
The classic form withif errorlevel 1actually is evaluated asif errorlevel is 1 or greaterso with the lower number first the 2nd if isn't executed at all.
– LotPings
Nov 27 '18 at 23:25
If errorlevel 1 If not errorlevel 2will only fire on 1.
– CatCat
Nov 27 '18 at 23:39
2
From the Choice help file: NOTE:The ERRORLEVEL environment variable is set to the index of the key that was selected from the set of choices. The first choice listed returns a value of 1, the second a value of 2, and so on. If the user presses a key that is not a valid choice, the tool sounds a warning beep. If tool detects an error condition, it returns an ERRORLEVEL value of 255. When you use ERRORLEVEL parameters in a batch program, list them in decreasing order.
– Squashman
Nov 27 '18 at 23:41
2
2
The classic form with
if errorlevel 1 actually is evaluated as if errorlevel is 1 or greater so with the lower number first the 2nd if isn't executed at all.– LotPings
Nov 27 '18 at 23:25
The classic form with
if errorlevel 1 actually is evaluated as if errorlevel is 1 or greater so with the lower number first the 2nd if isn't executed at all.– LotPings
Nov 27 '18 at 23:25
If errorlevel 1 If not errorlevel 2 will only fire on 1.– CatCat
Nov 27 '18 at 23:39
If errorlevel 1 If not errorlevel 2 will only fire on 1.– CatCat
Nov 27 '18 at 23:39
2
2
From the Choice help file: NOTE:The ERRORLEVEL environment variable is set to the index of the key that was selected from the set of choices. The first choice listed returns a value of 1, the second a value of 2, and so on. If the user presses a key that is not a valid choice, the tool sounds a warning beep. If tool detects an error condition, it returns an ERRORLEVEL value of 255. When you use ERRORLEVEL parameters in a batch program, list them in decreasing order.
– Squashman
Nov 27 '18 at 23:41
From the Choice help file: NOTE:The ERRORLEVEL environment variable is set to the index of the key that was selected from the set of choices. The first choice listed returns a value of 1, the second a value of 2, and so on. If the user presses a key that is not a valid choice, the tool sounds a warning beep. If tool detects an error condition, it returns an ERRORLEVEL value of 255. When you use ERRORLEVEL parameters in a batch program, list them in decreasing order.
– Squashman
Nov 27 '18 at 23:41
add a comment |
2 Answers
2
active
oldest
votes
C:>if /?
...
IF [NOT] ERRORLEVEL number command
...
ERRORLEVEL number Specifies a true condition if the last program run returned
an exit code equal to or greater than the number specified.In other words, if errorlevel 1 executes for any errorlevel (except 0 = no error) because they're all equal to or greater than 1.
answered Nov 27 '18 at 23:38
melpomenemelpomene
61.6k54994
add a comment |
Just a hint, when using the %errorlevel% variable attached to a goto label, things can be quite easy:
@echo off
choice /C BL /M "Clear screen or list actual directory"
goto :choice%errorlevel%
:choice1 B
tree /f
goto final
:choice2 L
cls
goto final
:final
pause
answered Nov 27 '18 at 23:57
LotPingsLotPings
19.5k61533
1
Of course!:)
– Aacini
Nov 28 '18 at 0:29
add a comment |
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2 Answers
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active
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2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
C:>if /?
...
IF [NOT] ERRORLEVEL number command
...
ERRORLEVEL number Specifies a true condition if the last program run returned
an exit code equal to or greater than the number specified.In other words, if errorlevel 1 executes for any errorlevel (except 0 = no error) because they're all equal to or greater than 1.
answered Nov 27 '18 at 23:38
melpomenemelpomene
61.6k54994
add a comment |
C:>if /?
...
IF [NOT] ERRORLEVEL number command
...
ERRORLEVEL number Specifies a true condition if the last program run returned
an exit code equal to or greater than the number specified.In other words, if errorlevel 1 executes for any errorlevel (except 0 = no error) because they're all equal to or greater than 1.
answered Nov 27 '18 at 23:38
melpomenemelpomene
61.6k54994
add a comment |
C:>if /?
...
IF [NOT] ERRORLEVEL number command
...
ERRORLEVEL number Specifies a true condition if the last program run returned
an exit code equal to or greater than the number specified.In other words, if errorlevel 1 executes for any errorlevel (except 0 = no error) because they're all equal to or greater than 1.
answered Nov 27 '18 at 23:38
melpomenemelpomene
61.6k54994
C:>if /?
...
IF [NOT] ERRORLEVEL number command
...
ERRORLEVEL number Specifies a true condition if the last program run returned
an exit code equal to or greater than the number specified.In other words, if errorlevel 1 executes for any errorlevel (except 0 = no error) because they're all equal to or greater than 1.
answered Nov 27 '18 at 23:38
melpomenemelpomene
61.6k54994
answered Nov 27 '18 at 23:38
melpomenemelpomene
61.6k54994
answered Nov 27 '18 at 23:38
melpomenemelpomene
61.6k54994
answered Nov 27 '18 at 23:38
melpomenemelpomene
61.6k54994
61.6k54994
add a comment |
add a comment |
Just a hint, when using the %errorlevel% variable attached to a goto label, things can be quite easy:
@echo off
choice /C BL /M "Clear screen or list actual directory"
goto :choice%errorlevel%
:choice1 B
tree /f
goto final
:choice2 L
cls
goto final
:final
pause
answered Nov 27 '18 at 23:57
LotPingsLotPings
19.5k61533
1
Of course!:)
– Aacini
Nov 28 '18 at 0:29
add a comment |
Just a hint, when using the %errorlevel% variable attached to a goto label, things can be quite easy:
@echo off
choice /C BL /M "Clear screen or list actual directory"
goto :choice%errorlevel%
:choice1 B
tree /f
goto final
:choice2 L
cls
goto final
:final
pause
answered Nov 27 '18 at 23:57
LotPingsLotPings
19.5k61533
1
Of course!:)
– Aacini
Nov 28 '18 at 0:29
add a comment |
Just a hint, when using the %errorlevel% variable attached to a goto label, things can be quite easy:
@echo off
choice /C BL /M "Clear screen or list actual directory"
goto :choice%errorlevel%
:choice1 B
tree /f
goto final
:choice2 L
cls
goto final
:final
pause
answered Nov 27 '18 at 23:57
LotPingsLotPings
19.5k61533
Just a hint, when using the %errorlevel% variable attached to a goto label, things can be quite easy:
@echo off
choice /C BL /M "Clear screen or list actual directory"
goto :choice%errorlevel%
:choice1 B
tree /f
goto final
:choice2 L
cls
goto final
:final
pause
answered Nov 27 '18 at 23:57
LotPingsLotPings
19.5k61533
answered Nov 27 '18 at 23:57
LotPingsLotPings
19.5k61533
answered Nov 27 '18 at 23:57
LotPingsLotPings
19.5k61533
answered Nov 27 '18 at 23:57
LotPingsLotPings
19.5k61533
19.5k61533
1
Of course!:)
– Aacini
Nov 28 '18 at 0:29
add a comment |
1
Of course!:)
– Aacini
Nov 28 '18 at 0:29
1
1
Of course!
:)– Aacini
Nov 28 '18 at 0:29
Of course!
:)– Aacini
Nov 28 '18 at 0:29
add a comment |
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2
The classic form with
if errorlevel 1actually is evaluated asif errorlevel is 1 or greaterso with the lower number first the 2nd if isn't executed at all.– LotPings
Nov 27 '18 at 23:25
If errorlevel 1 If not errorlevel 2will only fire on 1.– CatCat
Nov 27 '18 at 23:39
2
From the Choice help file: NOTE:The ERRORLEVEL environment variable is set to the index of the key that was selected from the set of choices. The first choice listed returns a value of 1, the second a value of 2, and so on. If the user presses a key that is not a valid choice, the tool sounds a warning beep. If tool detects an error condition, it returns an ERRORLEVEL value of 255. When you use ERRORLEVEL parameters in a batch program, list them in decreasing order.
– Squashman
Nov 27 '18 at 23:41