This is... odd.>From my workstation, where I'm directly logged in, if I ssh to any CentOS7 box, as myself, and try to run man, it fails. Example 1: man dd man: cannot write to /var/cache/man/cat1/dd.1.gz in catman mode dd. Example 2: man dd man: can't chmod (null): Bad address man: can't unlink (null): Bad address dd. In all cases, if I sudo -s to root, I have no trouble reading the manpage. In all cases I've tried, selinux is in permissive mode.>From one of these boxes:ls -laF /var/cache/man/ | more total 832 drwxr-xr-x. 38 root root 4096 Jan 27 07:52 ./ drwxr-xr-x. 9 root root 105 Dec 28 12:42 ../ -rw-r--r--. 1 root root 190 Dec 28 13:18 CACHEDIR.TAG drwxr-xr-x. 4 root root 62 Jan 27 07:52 ca/ drwxr-xr-x. 2 root root 20 Jan 27 11:27 cat1/ <...> But it's the same in CentOS 6. Clues? mark
On 01/27/2016 10:31 AM, m.roth at 5-cent.us wrote:> This is... odd. > > From my workstation, where I'm directly logged in, if I ssh to any CentOS > 7 box, as myself, and try to run man, it fails. > Example 1: > man dd > man: > cannot write to /var/cache/man/cat1/dd.1.gz in catman mode > dd. > > Example 2: > man dd > man: can't chmod (null): Bad address > man: can't unlink (null): Bad address > dd. > > In all cases, if I sudo -s to root, I have no trouble reading the manpage. > In all cases I've tried, selinux is in permissive mode. > > From one of these boxes: > ls -laF /var/cache/man/ | more > total 832 > drwxr-xr-x. 38 root root 4096 Jan 27 07:52 ./ > drwxr-xr-x. 9 root root 105 Dec 28 12:42 ../ > -rw-r--r--. 1 root root 190 Dec 28 13:18 CACHEDIR.TAG > drwxr-xr-x. 4 root root 62 Jan 27 07:52 ca/ > drwxr-xr-x. 2 root root 20 Jan 27 11:27 cat1/ > <...> > > But it's the same in CentOS 6. Clues?I've had NOCACHE set in /etc/man.config for a long time. On a modern machine there's not that much overhead generating the text page on demand, and eliminating that avoids issues with pages formatted for one window size being viewed on another. -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.
Robert Nichols wrote:> On 01/27/2016 10:31 AM, m.roth at 5-cent.us > wrote: >> This is... odd. >> >> From my workstation, where I'm directly logged in, if I ssh to any >> CentOS 7 box, as myself, and try to run man, it fails. >> Example 1: >> man dd >> man: >> cannot write to /var/cache/man/cat1/dd.1.gz in catman mode >> dd. >> >> Example 2: >> man dd >> man: can't chmod (null): Bad address >> man: can't unlink (null): Bad address >> dd. >> >> In all cases, if I sudo -s to root, I have no trouble reading the >> manpage. In all cases I've tried, selinux is in permissive mode.<snip>> I've had NOCACHE set in /etc/man.config for a long time. On a modern > machine there's not that much overhead generating the text page on > demand, and eliminating that avoids issues with pages formatted for > one window size being viewed on another.Thanks for the suggestion. The thing that bothers me is why this should happen at all.... mark