/usr/bin/crontab: cannot execute binary file: Exec format error?

Question

Task Schedulers

/etc# crontab -e
-bash: /usr/bin/crontab: cannot execute binary file: Exec format error

There were a couple of commands already registered earlier, now I went to the server, it knocks out an error. where did the binary go and why? How to restore?

Answer 1

Either the binary is damaged, or the libraries on which it depends.
View dmesg when such an error occurs.
Look ldd /usr/bin/crontabfor missing libraries.
You can also stupidly reinstall the package.
For debian something like this:
sudo apt install --reinstall cron