STDERR: STDERR and php://stderr
STDERR：STDERR和php://stderr
Often, you'll want to capture stdout and stderr.
您常常会需要捕获stdout和stderr。
How to save STDERR and STDOUT of a pipeline on a file?
如何节省管道stderr和标准输出一个文件？
Qlog is nice when you don't want to write printf STDERR every time.
如果不希望每次编写printfSTDERR，那么qlog将非常有用。
The same rules apply in AIX with > and >> on stdout and stderr.
在 AIX 中，对stdout和 stderr 使用 > 和 >>时应用相同的规则。
If stderr has been redirected to stdout, then both streams will be piped.
如果stderr已被重定向到stdout，那么两个流都会被通过管道导出。
(The stderr redirect to null is due to a scalar dropping issue in threads.pm).
(stderr重定向为null是由于threads . pm中的标量(scalar)释放问题)。
stderr is the standard error stream, which displays error output from commands.
stderr是标准错误流，显示命令中的错误输出。
The outlet is called the standard error device (usually referred to as stderr).
此出口称为标准错误设备(通常简称为stderr)。
Can't start unicorn, master failed to start, check stderr log for details.
无法启动的独角兽，主启动失败，详情请查看错误日志。
The -t option echoes each command to stderr before each command is executed.
t选项可以在执行每个命令之前将命令回显到stderr。
Thankfully, we remembered to separate stdout into ls.out and stderr into ls.err.
好在可以把stdout和stderr分别重定向到ls . out和ls .err，这样就能够看到错误消息。
You should never see any output from STDOUT (file descriptor 1) or STDERR (file descriptor 2).
您应该不会看到任何来自STDOUT(文件描述符1)或者STDERR(文件描述符2)的输出。
You cannot use 2 | to pipe stderr alone, at least, not with the tools we have learned so far.
您不能使用2 |单独导出stderr，至少使用我们目前所了解的工具还不能这样做。
Listing 10 shows what happens if you use nohup as we did before, but redirect both stdout and stderr.
清单10显示了按照旧方式使用nohup会发生什么情况，但同时重定向了stdout和stderr。
There are times when you may need to have both stdout and stderr written to the same file or device.
有时候，可能需要把stdout和stderr写到同一个文件或设备。
Meanwhile, the selpg process runs in the background, with stdout and stderr both redirected to files.
同时，selpg进程在后台运行，并且标准输出和标准错误都被重定向至文件。
In traditional programming languages such as c, you would use STDIN, STDOUT, and STDERR to accomplish this.
在诸如c之类的传统编程语言中，您将使用STDIN、STDOUT和STDERR完成此操作。
If there are errors in your script or command, you won't see a standard error (stderr) unless you pipe it to stdout.
如果命令或脚本出现错误，您将看不到标准的错误(stderr)，除非您通过竖线将它添加到stdout。
That's true. Although you can always redirect stderr and stdout, nothing beats a good command line error message.
这是事实。虽然你总是可以重定向标准输出和标准错误输出，没有什么比命令行错误消息好。
The nohup command is used to start a command that will ignore hangup signals and will append stdout and stderr to a file.
nohup命令用于启动一个忽略hangup信号的命令，并且将stdout和stderr附加到文件。
In the first case, stderr is redirected to the current location of stdout and then stdout is redirected to output.txt.
在第一种情况中，stderr被重定向到stdout的当前位置，然后在将stdout重定向到out put . txt，但第二次重定向仅影响stdout，不影响stderr。
With the environment configured, run the LeakyJNIApp for 10 seconds and capture the stderr output that contains the malloc log.
配置好环境之后，运行LeakyJNIApp10秒钟，并捕获stderr输出，其中包含malloc记录。
It is worth noting that code_recognizer.py sends its (large) test result file to STDOUT, but puts some friendly messages on STDERR.
值得注意的是，code_recognizer . py将它的(大的)测试结果文件发送到STDOUT，而将一些友好的消息放在STDERR里。
As we saw earlier in our discussion of pipelines, you need to redirect stderr to stdout before piping to tee if you want to save both.
在前面关于管道的讨论中可以看到，必须先将stderr重定向到stdout，然后再重定向到tee，如果您需要同时保存两者的话。
The term stdout is the output data that the program executed returns, and stderr refers to errors that the program encountered or returned.
术语stdout表示执行的程序所返回的输出数据，而stderr指的是程序遇到或返回的错误。
But our example just deals with simple values (and side effects). We want to make any use of a few attributes log the action to stderr.
但此处的示例仅处理简单的值(和副作用)。
If you've been paying attention, you've probably noticed that the standard error (stderr) stream isn't represented in any of those examples.
如果您仔细观察，那么可能会发现，前面的这些示例中并没有出现标准错误(stderr)流。
Combining STDOUT and STDERR in this way prevents STDERR output from showing up on the system console and enables the program to parse it.
以这种方法合并STDOUT和STDERR，将阻止STDERR输出在系统控制台上显示并允许程序解析它。
It writes your string argument to stderr (standard error), followed by a colon and a space, then the system error message followed by a newline.
它先将您的字符串参数写至标准错误(提供它用于定制消息)，接下来写入一个冒号和一个空格，然后是系统错误消息，后面是新的一行。
应用推荐