Add something like this to your /etc/fstab. Will save a few touches to the SD card and enhance system security a little. My last SD went for 3+ years on a decently busy little Pi.
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## Decrease touches to root partition a little with noatime flag
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/dev/mmcblk<NUM>p<NUM> / ext4 defaults,noatime 0 1
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## decrease writes because tmp activity by mounting as tmpfs
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tmpfs /tmp tmpfs ddefaults,nodev,nosuid,noexec,noatime,mode=1777 0 0
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## /dev/shm security measure
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tmpfs /dev/shm tmpfs defaults,noexec,nodev,nosuid 0 0
