To redirect stderr
to stdout
and have error messages sent to the same file as standard output, use the following:
正确的写法:command > file 2>&1
> file
redirect the stdout
to file
, and 2>&1
redirect the stderr
to the current location of stdout
.
The order of redirection is important. For example, the following example redirects only stdout
to file
. This happens because the stderr
is redirected to stdout
before the stdout
was redirected to file
.
错误的写法:command 2>&1 > file
Another way to redirect stderr
to stdout
is to use the &>
construct. In Bash &>
has the same meaning as 2>&1
:
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