From mboxrd@z Thu Jan  1 00:00:00 1970
From: Derek Fawcus <dfawcus@cisco.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] plan 9 ports to unix (including libdraw)
Message-ID: <20031017213548.H23130@edinburgh.cisco.com>
References: <OFB2D3336F.6270B83B-ON85256DC2.0063E4FF@com>
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In-Reply-To: <OFB2D3336F.6270B83B-ON85256DC2.0063E4FF@com>; from cjones83@csc.com on Fri, Oct 17, 2003 at 02:21:22PM -0400
Date: Fri, 17 Oct 2003 21:35:48 +0100
Topicbox-Message-UUID: 718a10ce-eacc-11e9-9e20-41e7f4b1d025

On Fri, Oct 17, 2003 at 02:21:22PM -0400, Caerwyn B Jones wrote:
>
> The tricky bit is to get the current working directory of the shell.
> On Solaris it's possible to use /proc/n/cwd to find it out. There's
> probably an equivalent on Linux.

Well from the below,  it's similar.  I believe that readlink() on
/proc/n/cwd (for linux) will get what you want.  I'm not sure what
one does on solaris.

DF

Solaris:

$ ls -l /proc/$$
total 2717
-rw-------   1 dfawcus   2752512 Oct 16 19:09 as
-r--------   1 dfawcus       152 Oct 16 19:09 auxv
-r--------   1 dfawcus        36 Oct 16 19:09 cred
--w-------   1 dfawcus         0 Oct 16 19:09 ctl
lr-x------   1 dfawcus         0 Oct 16 19:09 cwd ->
dr-x------   2 dfawcus      8208 Oct 16 19:09 fd
-r--r--r--   1 dfawcus       120 Oct 16 19:09 lpsinfo
-r--------   1 dfawcus       912 Oct 16 19:09 lstatus
-r--r--r--   1 dfawcus       536 Oct 16 19:09 lusage
dr-xr-xr-x   3 dfawcus        48 Oct 16 19:09 lwp
-r--------   1 dfawcus      2304 Oct 16 19:09 map
dr-x------   2 dfawcus       544 Oct 16 19:09 object
-r--------   1 dfawcus      2776 Oct 16 19:09 pagedata
-r--r--r--   1 dfawcus       336 Oct 16 19:09 psinfo
-r--------   1 dfawcus      2304 Oct 16 19:09 rmap
lr-x------   1 dfawcus         0 Oct 16 19:09 root ->
-r--------   1 dfawcus      1440 Oct 16 19:09 sigact
-r--------   1 dfawcus      1232 Oct 16 19:09 status
-r--r--r--   1 dfawcus       256 Oct 16 19:09 usage
-r--------   1 dfawcus         0 Oct 16 19:09 watch
-r--------   1 dfawcus      3648 Oct 16 19:09 xmap

Linux:

; ls -l /proc/$pid
total 0
-r--r--r--    1 dfawcus  dfawcus         0 Oct 17 21:28 cmdline
lrwxrwxrwx    1 dfawcus  dfawcus         0 Oct 17 21:28 cwd -> /home/dfawcus
-r--------    1 dfawcus  dfawcus         0 Oct 17 21:28 environ
lrwxrwxrwx    1 dfawcus  dfawcus         0 Oct 17 21:28 exe -> /usr/packages/rc-1.6b3/bin/rc-el
dr-x------    2 dfawcus  dfawcus         0 Oct 17 21:28 fd
-r--r--r--    1 dfawcus  dfawcus         0 Oct 17 21:28 maps
-rw-------    1 dfawcus  dfawcus         0 Oct 17 21:28 mem
lrwxrwxrwx    1 dfawcus  dfawcus         0 Oct 17 21:28 root -> /
-r--r--r--    1 dfawcus  dfawcus         0 Oct 17 21:28 stat
-r--r--r--    1 dfawcus  dfawcus         0 Oct 17 21:28 statm
-r--r--r--    1 dfawcus  dfawcus         0 Oct 17 21:28 status