Mount
losetup --list 的輸出是如何排序的？
當我執行
losetup --list（或只是losetup）獲取系統上的環回設備列表時，輸出似乎沒有任何有意義的順序：0 $ losetup --list NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC /dev/loop1 0 0 1 1 /var/lib/snapd/snaps/core18_1885.snap 0 512 /dev/loop29 0 0 1 1 /var/lib/snapd/snaps/core18_1880.snap 0 512 /dev/loop19 0 0 1 1 /var/lib/snapd/snaps/gtk-common-themes_1506.snap 0 512 /dev/loop27 0 0 1 1 /var/lib/snapd/snaps/gnome-characters_539.snap 0 512 /dev/loop17 0 0 1 1 /var/lib/snapd/snaps/gnome-characters_550.snap 0 512 /dev/loop8 0 0 1 1 /var/lib/snapd/snaps/gtk-common-themes_1502.snap 0 512 /dev/loop25 0 0 1 1 /var/lib/snapd/snaps/kde-frameworks-5-qt-5-14-core18_4.snap 0 512 /dev/loop15 0 0 1 1 /var/lib/snapd/snaps/glimpse-editor_134.snap 0 512 /dev/loop6 0 0 1 1 /var/lib/snapd/snaps/gnome-calculator_730.snap 0 512 /dev/loop23 0 0 1 1 /var/lib/snapd/snaps/gnome-logs_93.snap 0 512 /dev/loop13 0 0 1 1 /var/lib/snapd/snaps/wormhole_112.snap 0 512 /dev/loop4 0 0 1 1 /var/lib/snapd/snaps/canonical-livepatch_94.snap 0 512它顯然不是按設備名稱排序的，也不是按備份文件的名稱排序的。順序是隨意的嗎？
losetupgetdents64()從讀取/sys/block，因此它是該目錄中條目的順序。如果你得到相同的訂單
ls -f（不排序），那就是它：# ls -f /sys/block | grep loop loop1 loop6 loop4 loop2 loop0 loop7 loop5 loop3並
losetup進行比較：# losetup NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC /dev/loop1 0 0 0 0 /dev/shm/b 0 512 /dev/loop6 0 0 0 0 /dev/shm/c 0 512 /dev/loop4 0 0 0 0 /dev/shm/a 0 512 /dev/loop2 0 0 0 0 /dev/shm/c 0 512 /dev/loop0 0 0 0 0 /dev/shm/a 0 512 /dev/loop7 0 0 0 0 /dev/shm/d 0 512 /dev/loop5 0 0 0 0 /dev/shm/b 0 512 /dev/loop3 0 0 0 0 /dev/shm/d 0 512
getdents手冊頁沒有提到任何關於訂單的內容，但是readdir說：The order in which filenames are read by successive calls to readdir() depends on the filesystem implementation; it is unlikely that the names will be sorted in any fashion.在排序列表（等）中輸出文件的程序
ls通常會自行排序，當您使用類似的東西時echo *，shell 會為您進行排序。對於
losetup輸出，我想沒有人會費心以任何有意義的方式對其進行排序。