> echo "/dev/sda1 /mnt/dev ext4 defaults 0 0" | sudo tee -a /etc/fstab > If this... | Hacker News

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		soheil on Dec 9, 2021 \| parent \| context \| favorite \| on: How to write idempotent Bash scripts (2019) > echo "/dev/sda1 /mnt/dev ext4 defaults 0 0" \| sudo tee -a /etc/fstab > If this is run again, you’ll end up having duplicate entries in your /etc/fstab You could also just add a space in front of a command you don't to accidentally run later. This will not store it in .history

mdaniel on Dec 9, 2021 | [–]

Perhaps you conflated /etc/fstab with $HOME/.bash_history? Because for sure that "sudo tee -a" will cheerfully append its stdin to the named file each time it is run, at least until you run out of disk space

ttyprintk on Dec 9, 2021 | [–]

Seems to me findmnt has the proper helpers for checking. But, I would recommend a systemd mount unit.

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