如何在使用管道时将stderr写入文件？

Question

如何在使用管道时将stderr写入文件？我知道怎么用tee要写入输出(STDOUT)aaa.sh到bbb.out，同时仍将其显示在终端中：./aaa.sh | tee bbb.out我现在该怎么写STDERR到一个名为ccc.out，当它还在展示的时候？

Answer 1

这可能对人们通过谷歌发现这一点很有用。只需取消您想要尝试的示例。当然，可以重命名输出文件。

#!/bin/bash

STATUSFILE=x.out

LOGFILE=x.log

### All output to screen

### Do nothing, this is the default

### All Output to one file, nothing to the screen

#exec > ${LOGFILE} 2>&1

### All output to one file and all output to the screen

#exec > >(tee ${LOGFILE}) 2>&1

### All output to one file, STDOUT to the screen

#exec > >(tee -a ${LOGFILE}) 2> >(tee -a ${LOGFILE} >/dev/null)

### All output to one file, STDERR to the screen

### Note you need both of these lines for this to work

#exec 3>&1

#exec > >(tee -a ${LOGFILE} >/dev/null) 2> >(tee -a ${LOGFILE} >&3)

### STDOUT to STATUSFILE, stderr to LOGFILE, nothing to the screen

#exec > ${STATUSFILE} 2>${LOGFILE}

### STDOUT to STATUSFILE, stderr to LOGFILE and all output to the screen

#exec > >(tee ${STATUSFILE}) 2> >(tee ${LOGFILE} >&2)

### STDOUT to STATUSFILE and screen, STDERR to LOGFILE

#exec > >(tee ${STATUSFILE}) 2>${LOGFILE}

### STDOUT to STATUSFILE, STDERR to LOGFILE and screen

#exec > ${STATUSFILE} 2> >(tee ${LOGFILE} >&2)

echo "This is a test"

ls -l sdgshgswogswghthb_this_file_will_not_exist_so_we_get_output_to_stderr_aronkjegralhfaff

ls -l ${0}