Hey Guilhem. > There might be a better way to detect an initramfs-tools environment
I once faced the same question when writing a (cryptsetup) keyscript, i.e. how to definitely find out whether one's "within" the initramfs. With crypsetup it may seem easy - check for e.g. /scripts/local- top/cryptroot - but that, as well as similar files (like /conf/initramfs.conf) may in principle also exist after the system has booted. The best I could find was checking whether / is of type rootfs: Something like: # `grep`’s `-q`-option is not used as it may cause an exit status of `0` even # when an error occurred. grep -E '^[^ ]+ [^ ]+ [^ ]+ [^ ]+ / [^ ]+ ([^ ]+ )*- rootfs [^ ]+ [^ ]+$' /proc/self/mountinfo >/dev/null 2>/dev/null; [ "$?" -ne 1 ]; But checking as you do may in practise fully suffice. Cheers, Chris.
