<ol style="list-style-type: lower-alphanone;"><li><p>a) '''jammy''' indicates the type of linux distribution of rootfs</p></li><li><p>b) '''xfce''' means rootfs is the type of desktop version, if it is '''cli''', it means the type of server version</p></li><li><p>c) '''arm64''' represents the architecture type of rootfs</p></li><li><p>d) '''f930ff6ebbac1a72108a2e100762b18f''' is the MD5 hash value generated by the package names of all software packages installed by rootfs. As long as the list of software packages installed by rootfs is not modified, this value will not change. The compilation script will use this MD5 hash value to generate Determine whether rootfs needs to be recompiled</p></li></ol>