[action] [PR:145] Fix modify_single_file generate empty file issue (#145) #153
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Fix hostcfgd modify_single_file method generates empty file issue
Why I did it
Fix hostcfgd modify_single_file method generates empty file issue: sonic-net/sonic-buildimage#19748
In the original code, there are 2 'mv' commands to backup and copy new file, if hostcfgd crash between those 2 commands, the original file will be removed, then when hostcfgd restart later, it will generate a empty file.
The issue can be fix by use cp command.
Work item tracking
How I did it
Replace 'mv' command to 'cp' command
How to verify it
Manually verified.
Pass all test case.
Which release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)
will updated with this PR image later.
Description for the changelog
Fix hostcfgd modify_single_file method generates empty file issue
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)