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how to redirect error output under unix

how to redirect error output under unix# Unix - 噫吁兮，危乎高哉

s*n2000-12-27 08:12

1 楼

I want to redirect the error output to a file, how to do
this? command > error.txt 2>&1 doesn't work(learn from a
shell programming book). sgi irix 6.5. thanks.

p*s2000-12-27 08:12

2 楼

That is for Bourne/Korn/BourneAgain shells.
Guess you are using C shell, try to use >& instead of >

【在 s******n 的大作中提到】

: I want to redirect the error output to a file, how to do
: this? command > error.txt 2>&1 doesn't work(learn from a
: shell programming book). sgi irix 6.5. thanks.

s*n2000-12-27 08:12

3 楼

yes, i am using tcsh. you mean this:
command >& error 2>&1
result: Ambiguous output redirect
i am a newbie of unix, thanks.

【在 p****s 的大作中提到】

:
: That is for Bourne/Korn/BourneAgain shells.
: Guess you are using C shell, try to use >& instead of >

p*s2000-12-27 08:12

4 楼

command >& error
As I know, there is no way to separate stderr and stdout in c shells.
So actually the file "error" will hold both stdout and stderr.

【在 s******n 的大作中提到】

: yes, i am using tcsh. you mean this:
: command >& error 2>&1
: result: Ambiguous output redirect
: i am a newbie of unix, thanks.

s*n2000-12-27 08:12

5 楼

that makes sense, what i want is ouputing the f77 compiler
license information to a file. everytime i compile a file,
it always output lots of dummy. thanks.

【在 p****s 的大作中提到】

:
: command >& error
: As I know, there is no way to separate stderr and stdout in c shells.
: So actually the file "error" will hold both stdout and stderr.

s*n2000-12-27 08:12

6 楼

csh & tcsh,
(command > result.out) >& error.out

【在 s******n 的大作中提到】

: I want to redirect the error output to a file, how to do
: this? command > error.txt 2>&1 doesn't work(learn from a
: shell programming book). sgi irix 6.5. thanks.