diff options
Diffstat (limited to 'helper/febootstrap-supermin-helper.pod')
| -rw-r--r-- | helper/febootstrap-supermin-helper.pod | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/helper/febootstrap-supermin-helper.pod b/helper/febootstrap-supermin-helper.pod index 7a3dbd1..c6c551c 100644 --- a/helper/febootstrap-supermin-helper.pod +++ b/helper/febootstrap-supermin-helper.pod @@ -9,6 +9,8 @@ febootstrap-supermin-helper - Reconstruct initramfs from supermin appliance. febootstrap-supermin-helper -f ext2 input [...] host_cpu kernel initrd appliance + febootstrap-supermin-helper -f checksum input [...] host_cpu + =head1 DESCRIPTION I<febootstrap-supermin-helper> reconstructs a bootable kernel and @@ -31,7 +33,8 @@ C<kernel>, C<initrd> and C<appliance> are the temporary output files that this script produces. These output files are meant to be used just for booting the appliance, and should be deleted straight afterwards. The extra C<appliance> parameter is only required when -the format is C<ext2>. +the format is C<ext2>. None of these parameters are needed for +the checksum output C<-f checksum>. =head1 OPTIONS @@ -54,9 +57,22 @@ and C<initrd>, where the C<initrd> is the appliance. An ext2 filesystem. -In this case you have to supply names for the C<kernel>, -a small C<initrd> which is used just to locate the appliance, -and the C<appliance> (the ext2 filesystem). +In this case you have to supply names for the C<kernel>, a small +C<initrd> which is used just to locate the appliance, and the +C<appliance> (the ext2 filesystem). + +=item checksum + +Output a checksum. + +This prints a checksum which only changes when one of the input files +changes. + +You can use this in order to cache the output of a previous run of +this program: computing the checksum is much quicker than building an +appliance, and you only need to invalidate the cache (and consequently +rebuild the appliance) when the checksum changes. Note that the +host_cpu and the UID of the current user are included in the checksum. =back |