"System groups" (often just "groups") contain users[1], and are one of the basic security concepts in UNIX and many other operating systems. Each user belongs to a primary group and any number of secondary groups; a group, like a user, can be allowed to access or modify certain files and directories using the usual chown, chmod, chgrp, setfacl tools.
"Netgroups", on the other hand, are part of NIS/YP directory services system used only in Unix-like systems. A netgroup contains entries in the form (hostname, user, nis-domain) (with all three items optional), and can describe a user on any host, any user on a specific host, and such. Netgroups are not used with files directly, but only by NIS-aware programs: NFS exported filesystems, sudo, system login rights.
[1] Other operating systems may allow more advanced configurations; e.g. Windows NT supports groups as group members.
Had the same issue. Ran a few times
Create /etc/e2fsck.conf with the following content:
[scratch_files]
directory = /var/cache/e2fsck
Updated e2fsck:
wget http://downloads.sourceforge.net/project/e2fsprogs/e2fsprogs/v1.43.1/e2fsprogs-1.43.1.tar.gz
tar xzf e2fsprogs-1.43.1.tar.gz
cd e2fsprogs-1.43.1
./configure
make
cd e2fsck/
./e2fsck
Reran. Same error but I noticed it was completing more with each run. Ran until completion
Best Answer
fsck is just the original name. When they came out with new file systems they would need a specific tool for each one, efsck for ext, e2fsck for ext2, dosfsck, fsckvfat. So they made fsck the front end that just calls whichever is the appropriate tool.