Downstream echo is very slow on Linux login

Table of contents

problem phenomenon

 Cause Analysis

 Solution

Source code and other data acquisition methods

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problem phenomenon

When logging in to linux, the remote connection is normal, but the [root@...] echo is very slow. When executing scripts, it is easy to cause confusion in issuing commands

 Cause Analysis

The .bash_history file in the home directory is too large, and it takes too long to read this file every time you log in.

 Further analysis of the reason for the file size is found to be that the file has been added with 'a' permission (append, which allows append operations in the file), which causes commands to be continuously written into the file in the form of append.

 Solution

Remove the 'a' attribute before deleting the file.

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Source code and other data acquisition methods

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