Shulou(Shulou.com)06/01 Report--

Today, I will talk to you about how to judge the successful execution of the bc command in linux. Many people may not know much about it. In order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article.

Bc:

No=1321456

Echo "obase=2;$no" | bc binary, octal and hexadecimal are the same. +-*% operation can be achieved by replacing quotation marks.

Determine the successful execution of the command:

Run echo $? after executing the command. If the result is non-0, it means that the operation is not successful, and vice versa.

0 standard input

1 standard output

2 standard error

For example, output ls command error messages to out.txt

Ls "cuowucanshu" 2 > out.txt

> empty files > > append file contents

After reading the above, do you have any further understanding of how to determine whether the bc command is executed successfully in linux? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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