rm -rf /home/wordpress/testDomain.com私のLinuxコンピュータからファイルを削除できません。ファイルを削除する代わりにOperation not permittedエラーが発生します。この問題をどのように解決できますか？
$ cd /home/wordpress/testDomain.com/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs
$ sudo rm -f annmanagement
rm: cannot remove 'annmanagement': Operation not permitted
$ ls -al
total 3308
drwxr-xr-x 2 www-data www-data 4096 May 27 13:43 .
drwxr-xr-x 3 www-data www-data 4096 May 27 13:46 ..
-r-------- 1 root root 3375768 Dec 27 2016 annmanagement
$ sudo find . -inum 535255 -exec rm -i {} \;**
rm: remove regular file './annmanagement'? y
rm: cannot remove './annmanagement': Operation not permitted
$ lsattr
----i---------e----- ./annmanagement
$ stat annmanagement
File: annmanagement
Size: 3375768 Blocks: 6600 IO Block: 4096 regular file
Device: fd00h/64768d Inode: 535255 Links: 1
Access: (0400/-r--------) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2022-05-27 09:02:30.650849241 +0200
Modify: 2016-12-27 10:48:37.000000000 +0100
Change: 2022-03-15 07:59:42.524922372 +0100
Birth: -
トレース出力：
$ sudo strace rm -f annmanagement**
execve("/bin/rm", ["rm", "-f", "annmanagement"], 0x7ffc24e45690 /* 13 vars */) = 0
brk(NULL) = 0x55cd820a2000
arch_prctl(0x3001 /* ARCH_??? */, 0x7ffe7894d320) = -1 EINVAL (Invalid argument)
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=42697, ...}) = 0
mmap(NULL, 42697, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f8c5d386000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300A\2\0\0\0\0\0"..., 832) = 832
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
pread64(3, "\4\0\0\0\20\0\0\0\5\0\0\0GNU\0\2\0\0\300\4\0\0\0\3\0\0\0\0\0\0\0", 32, 848) = 32
pread64(3, "\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\30x\346\264ur\f|Q\226\236i\253-'o"..., 68, 880) = 68
fstat(3, {st_mode=S_IFREG|0755, st_size=2029592, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c5d384000
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
pread64(3, "\4\0\0\0\20\0\0\0\5\0\0\0GNU\0\2\0\0\300\4\0\0\0\3\0\0\0\0\0\0\0", 32, 848) = 32
pread64(3, "\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\30x\346\264ur\f|Q\226\236i\253-'o"..., 68, 880) = 68
mmap(NULL, 2037344, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f8c5d192000
mmap(0x7f8c5d1b4000, 1540096, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7f8c5d1b4000
mmap(0x7f8c5d32c000, 319488, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19a000) = 0x7f8c5d32c000
mmap(0x7f8c5d37a000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1e7000) = 0x7f8c5d37a000
mmap(0x7f8c5d380000, 13920, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f8c5d380000
close(3) = 0
arch_prctl(ARCH_SET_FS, 0x7f8c5d385580) = 0
mprotect(0x7f8c5d37a000, 16384, PROT_READ) = 0
mprotect(0x55cd80c6a000, 4096, PROT_READ) = 0
mprotect(0x7f8c5d3be000, 4096, PROT_READ) = 0
munmap(0x7f8c5d386000, 42697) = 0
brk(NULL) = 0x55cd820a2000
brk(0x55cd820c3000) = 0x55cd820c3000
openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=3035952, ...}) = 0
mmap(NULL, 3035952, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f8c5ceac000
close(3) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
newfstatat(AT_FDCWD, "annmanagement", {st_mode=S_IFREG|0400, st_size=3375768, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlinkat(AT_FDCWD, "annmanagement", 0) = -1 EPERM (Operation not permitted)
openat(AT_FDCWD, "/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2996, ...}) = 0
read(3, "# Locale name alias data base.\n#"..., 4096) = 2996
read(3, "", 4096) = 0
close(3) = 0
openat(AT_FDCWD, "/usr/share/locale/en_US.UTF-8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en_US.utf8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en_US/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en.UTF-8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en.utf8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en_US.UTF-8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en_US.utf8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en_US/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en.UTF-8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en.utf8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
write(2, "rm: ", 4rm: ) = 4
write(2, "cannot remove 'annmanagement'", 29cannot remove 'annmanagement') = 29
openat(AT_FDCWD, "/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en_US/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en_US.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en_US.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en_US/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale-langpack/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
write(2, ": Operation not permitted", 25: Operation not permitted) = 25
write(2, "\n", 1
) = 1
lseek(0, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
close(0) = 0
close(1) = 0
close(2) = 0
exit_group(1) = ?
+++ exited with 1 +++
答え1
ilsattr表示された出力によると、ファイルには（「不変」）属性があります。
chattr(1)マニュアルで（Ubuntuから）：
この属性を持つファイルは
i変更できません。削除または名前変更できず、ファイルへのリンクを作成できず、ファイルのメタデータのほとんどを変更できず、ファイルを書き込みモードで開くことができません。スーパーユーザーまたはこの機能を持つプロセスのみがこのプロパティを設定またはCAP_LINUX_IMMUTABLE消去できます。
これにより、次のファイルのローカルシステムの状況が再現されますfile。
$ touch file
$ lsattr file
--------------e----- file
$ sudo chattr +i file
$ lsattr file
----i---------e----- file
$ sudo rm file
rm: cannot remove 'file': Operation not permitted
ファイルを削除する前に、ルートの不変属性を設定解除する必要がありました。
$ sudo chattr -i file
$ rm file