Re: OT: dotfile generalities (was Re: repeated system mail, /etc/.pwd.lock ?)

[David Wright <deblis@lionunicorn.co.uk>]

On Thu 06 May 2021 at 10:46:03 (-0400), Greg Wooledge wrote:
> On Thu, May 06, 2021 at 02:37:17PM +0000, davidson wrote:
> > > $ shopt -s globstar
> > > $ ls /etc/**/.[^.]*
> > 
> > It now occurs to me that this still omits files like /etc/.a and
> > /etc/..metadotfile
> 
> It doesn't omit .a .  The * is allowed to match the empty string.
> 
> > Instead,
> > 
> >  $ ls /etc/**/.{.?,[^.]}*
> > 
> > does what I intend, which is to display all dotfiles under /etc. Seems
> > unduly complicated if you ask me, but it is what it is.
> 
> find /etc -type f -name '.*'

Well, here are the files on my system:

#  find /etc -type f -name '.*' -ls | sort -k 11
 -rwx------ 84357 May  6 08:25 /etc/.etckeeper
 -rw-------   932 Apr  3  2020 /etc/.gitignore
 -rw-r--r--     0 Apr  3  2020 /etc/.java/.systemPrefs/.system.lock
 -rw-r--r--     0 Apr  3  2020 /etc/.java/.systemPrefs/.systemRootModFile
 -rw-------     0 Apr  3  2020 /etc/.pwd.lock
 -rw-r--r--   102 Jun 23  2019 /etc/cron.d/.placeholder
 -rw-r--r--   102 Jun 23  2019 /etc/cron.daily/.placeholder
 -rw-r--r--   102 Jun 23  2019 /etc/cron.hourly/.placeholder
 -rw-r--r--   102 Jun 23  2019 /etc/cron.monthly/.placeholder
 -rw-r--r--   102 Jun 23  2019 /etc/cron.weekly/.placeholder
 -rw-r--r--     0 Dec 19  2018 /etc/sensors.d/.placeholder
 -rw-r--r--   220 Apr 17  2019 /etc/skel/.bash_logout
 -rw-r--r--  3526 Apr 17  2019 /etc/skel/.bashrc
 -rw-r--r--   807 Apr 17  2019 /etc/skel/.profile
# 

(I removed the node#, usage, #links and ownership for brevity.)

I have no argument with /etc/skel/ and the placeholders, obviously.
/etc/.etckeeper is a script for creating directories and resetting
ownerships/permissions in /etc/, and /etc/.gitignore is a list of
filename patterns that etckeeper is configured not to track.

Turning to the dot-directories with:

  # ls -GlgAR /etc/\.[^\.]*/   (pruned and attached)

/etc/.git/ certainly contains configuration files as well as the
repository itself. I know nothing about java, and how /etc/.java
relates to /etc/java/.

Most of this stuff is protected from reading, but I don't see the
point in "hiding" them with dots.

Cheers,
David.

/etc/.git/:
total 244
-rw-r--r--   1     17 May  6 08:25 COMMIT_EDITMSG
-rw-r--r--   1     23 Apr  3  2020 HEAD
drwxr-xr-x   2   4096 Apr  3  2020 branches
-rw-r--r--   1     92 Apr  3  2020 config
-rw-r--r--   1     21 Apr  3  2020 description
drwxr-xr-x   2   4096 Apr  3  2020 hooks
-rw-r--r--   1 206363 May  6 08:35 index
drwxr-xr-x   2   4096 Apr  3  2020 info
drwxr-xr-x   3   4096 Apr  3  2020 logs
drwxr-xr-x 260   4096 Apr  3  2020 objects
drwxr-xr-x   4   4096 Apr  3  2020 refs

/etc/.git/branches:
total 0

/etc/.git/hooks:
total 52
-rwxr-xr-x 1  478 Apr  3  2020 applypatch-msg.sample
-rwxr-xr-x 1  896 Apr  3  2020 commit-msg.sample
-rwxr-xr-x 1 3327 Apr  3  2020 fsmonitor-watchman.sample
-rwxr-xr-x 1  189 Apr  3  2020 post-update.sample
-rwxr-xr-x 1  424 Apr  3  2020 pre-applypatch.sample
-rwxr-xr-x 1  118 Apr  3  2020 pre-commit
-rwxr-xr-x 1 1638 Apr  3  2020 pre-commit.sample
-rwxr-xr-x 1 1348 Apr  3  2020 pre-push.sample
-rwxr-xr-x 1 4898 Apr  3  2020 pre-rebase.sample
-rwxr-xr-x 1  544 Apr  3  2020 pre-receive.sample
-rwxr-xr-x 1 1492 Apr  3  2020 prepare-commit-msg.sample
-rwxr-xr-x 1 3610 Apr  3  2020 update.sample

/etc/.git/info:
total 4
-rw-r--r-- 1 240 Apr  3  2020 exclude

/etc/.git/logs:
total 68
-rw-r--r-- 1 60021 May  6 08:25 HEAD
drwxr-xr-x 3  4096 Apr  3  2020 refs

/etc/.git/logs/refs:
total 4
drwxr-xr-x 2 4096 Apr  3  2020 heads

/etc/.git/logs/refs/heads:
total 64
-rw-r--r-- 1 60021 May  6 08:25 master

/etc/.git/objects:
total 1032
drwxr-xr-x 2 4096 Mar 27 13:03 00
[ … ]
drwxr-xr-x 2 4096 Jun 12  2020 ff
drwxr-xr-x 2 4096 Apr  3  2020 info
drwxr-xr-x 2 4096 Apr  3  2020 pack

/etc/.git/objects/00:
total 92
-r--r--r-- 1 13623 Jun 30  2020 1c2271807b14845a18e475364a48d9652a1ddd
[ … ]
-r--r--r-- 1 2697 Apr  3  2020 fac6f7df55d080c9804ea3386634bb906c531b

/etc/.git/objects/ff:
total 68
-r--r--r-- 1   62 Apr  3  2020 1f5877865a736c3c30efb1d8826aff909e078e
[ … ]
-r--r--r-- 1  380 Apr  3  2020 f8d813e0e033163e1ffe916f4cb8f0fd97f54b

/etc/.git/objects/info:
total 0

/etc/.git/objects/pack:
total 0

/etc/.git/refs:
total 8
drwxr-xr-x 2 4096 May  6 08:25 heads
drwxr-xr-x 2 4096 Apr  3  2020 tags

/etc/.git/refs/heads:
total 4
-rw-r--r-- 1 41 May  6 08:25 master

/etc/.git/refs/tags:
total 0

/etc/.java/:
total 4
drwxr-xr-x 2 4096 Apr  3  2020 .systemPrefs

/etc/.java/.systemPrefs:
total 0
-rw-r--r-- 1 0 Apr  3  2020 .system.lock
-rw-r--r-- 1 0 Apr  3  2020 .systemRootModFile