如何将bst脚本中的stdout和stderr都重定向到文件? [英] How to redirect both stdout and stderr to a file from within a bash script?

问题描述

我想在我的bash脚本中添加一条命令，将所有stderr和stdout定向到特定文件.来自此和许多其他来源，我知道在命令行中我会使用:

I want to add a command to my bash script that directs all stderr and stdout to specific files. From this and many other sources, I know that from the command line I would use:

/path/to/script.sh >> log_file 2>> err_file

但是，我想要在脚本中添加一些东西，类似于这些slurm标志:

However, I want something inside my script, something akin to these slurm flags:

#!/bin/bash
#SBATCH -o slurm.stdout.txt # Standard output log
#SBATCH -e slurm.stderr.txt # Standard error log

<code>

是否有一种方法可以直接从脚本内进行输出，还是需要使用>> ;?log_file 2>>每次我调用脚本时都出现err_file 吗?谢谢

Is there a way to direct output from within a script, or do I need to use >> log_file 2>> err_file every time I call the script? Thanks

推荐答案

您可以在bash脚本的开头使用它:

You can use this at the start of your bash script:

# Redirected Output
exec > log_file 2> err_file

如果文件确实存在，则将其截断为零大小.如果您想附加，请使用以下命令:

If the file does exist it is truncated to zero size. If you prefer to append, use this:

# Appending Redirected Output
exec >> log_file 2>> err_file

如果要将stdout和stderr都重定向到同一文件，则可以使用:

If you want to redirect both stdout and stderr to the same file, then you can use:

# Redirected Output
exec &> log_file
# This is semantically equivalent to
exec > log_file 2>&1

如果您想附加，请使用此:

If you prefer to append, use this:

# Appending Redirected Output
exec >> log_file 2>&1

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