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Groups > comp.os.linux.misc > #67731
| From | The Natural Philosopher <tnp@invalid.invalid> |
|---|---|
| Newsgroups | comp.os.linux.misc, comp.sys.raspberry-pi |
| Subject | Re: Simple way for web to execute root shell script. |
| Date | 2025-05-23 21:44 +0100 |
| Organization | A little, after lunch |
| Message-ID | <100qmo3$8ldq$1@dont-email.me> (permalink) |
| References | <100pphq$2taj$2@dont-email.me> <100qfmc$78ks$3@dont-email.me> |
Cross-posted to 2 groups.
On 23/05/2025 19:44, Rich wrote:
> In comp.os.linux.misc The Natural Philosopher <tnp@invalid.invalid> wrote:
>> I have a shell script that monitors hardware stuff - it needs to run
>> as root and be called by Apache as user www.
>>
>> Bookworm linux on a Pi4.
>>
>> Its all inside a domestic firewall so security is not a huge issue.
>> What is the quickest and simplest solution to this?
>
> You've been given lots of options already. But not this one.
>
> What "hardware stuff" is it monitoring? If it is reading files in
> /proc and/or /sys to obtain its "data" then another alternative would
> be to setup /proc and /sys to be mounted group or world readable (or to
> reset permissions on the necessary files via a rc.local boot script to
> group or world readable). That would let the script "monitor" without
> being root. Then you could even convert the script into a CGI script
> (which Apache is more than able to execute, and doing so for minimal
> text output involves the script outputting a handful of HTTP headers
> before the monitor data) and get your "monitoring data" back via
> Apache.
>
Sadly the data is not available in /sys or /proc AFAIK.
I wanted information on the temperature and data volumes on the SSDs and
the temperature of the ARM core. Plus data on the amount of data being
transported over the ethernet interface.
The tools that came to hand were vgcencmd, smartctl, df and ip. Plus
some sedery grepery and awkery
The script is (if you are interested)
#!/bin/bash
smartctl -a /dev/sda | grep Celsius | awk '{print $10}'
smartctl -a /dev/sdb | grep Celsius | awk '{print $10}'
vcgencmd measure_temp | sed -e 's/temp=//' | sed -e "s/'C//"
ip -s link show dev eth0 | awk 'FNR == 4 {print $1}'
ip -s link show dev eth0 | awk 'FNR == 6 {print $1}'
df -h | grep /dev/sd
A typical output is
40
44
57.4
220513467
17430583
/dev/sda2 110G 6.1G 98G 6% /
/dev/sda1 510M 66M 445M 13% /boot/firmware
/dev/sda3 366G 126G 222G 37% /home
/dev/sdb1 219G 130G 78G 63% /backup
/dev/sdb2 1.6T 1.3T 297G 81% /home/Media
/dev/sda5 990G 559G 381G 60% /home/Media/Unedited
/dev/sda6 366G 26G 322G 8% /backup2
The intention is to poll that using AJAX and parse it into the position
of needles on dials in a web page.
I used to do this via SNMP, but less and less is available with SNMP and
its clunky as shit,
If any of that is in /proc or /sys. I would like to hear about it.
None of this is precision stuff: I am building an ARM based NAS and I
just need a quick and easy way to keep an eye on it to see if it gets to
hot or too full as I develop stuff
--
In theory, there is no difference between theory and practice.
In practice, there is.
-- Yogi Berra
Back to comp.os.linux.misc | Previous | Next — Previous in thread | Next in thread | Find similar
Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-23 13:26 +0100
Re: Simple way for web to execute root shell script. Pancho <Pancho.Jones@protonmail.com> - 2025-05-23 13:51 +0100
Re: Simple way for web to execute root shell script. Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2025-05-23 14:47 +0000
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-23 16:06 +0100
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-23 16:00 +0100
Re: Simple way for web to execute root shell script. Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2025-05-23 14:08 +0000
Re: Simple way for web to execute root shell script. Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2025-05-23 14:23 +0000
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-23 16:03 +0100
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-23 16:02 +0100
Re: Simple way for web to execute root shell script. Marc Haber <mh+usenetspam1118@zugschl.us> - 2025-05-23 17:24 +0200
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-23 17:53 +0100
Re: Simple way for web to execute root shell script. Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-24 00:37 +0000
Re: Simple way for web to execute root shell script. John-Paul Stewart <jpstewart@personalprojects.net> - 2025-05-23 10:14 -0400
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-23 16:05 +0100
Re: Simple way for web to execute root shell script. Eli the Bearded <*@eli.users.panix.com> - 2025-05-23 16:46 +0000
Re: Simple way for web to execute root shell script. Rich <rich@example.invalid> - 2025-05-23 18:44 +0000
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-23 21:44 +0100
Re: Simple way for web to execute root shell script. Rich <rich@example.invalid> - 2025-05-24 02:13 +0000
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-24 09:18 +0100
Re: Simple way for web to execute root shell script. Theo <theom+news@chiark.greenend.org.uk> - 2025-05-24 08:27 +0100
Re: Simple way for web to execute root shell script. Chris Elvidge <chris@internal.net> - 2025-05-24 13:28 +0100
Re: Simple way for web to execute root shell script. Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2025-05-25 10:17 +0300
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-25 08:52 +0100
Re: Simple way for web to execute root shell script. Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-25 09:42 +0000
Re: Simple way for web to execute root shell script. vallor <vallor@cultnix.org> - 2025-05-29 03:04 +0000
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-29 12:03 +0100
Re: Simple way for web to execute root shell script. Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2025-05-26 11:27 +0300
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-26 12:31 +0100
Re: Simple way for web to execute root shell script. druck <news@druck.org.uk> - 2025-05-27 21:44 +0100
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-28 08:58 +0100
Re: Simple way for web to execute root shell script. druck <news@druck.org.uk> - 2025-05-28 21:34 +0100
Re: Simple way for web to execute root shell script. Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2025-05-29 10:07 +0300
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-29 12:14 +0100
Re: Simple way for web to execute root shell script. Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2025-05-30 20:53 +0300
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-30 19:36 +0100
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-29 11:36 +0100
Re: Simple way for web to execute root shell script. Rich <rich@example.invalid> - 2025-05-29 14:41 +0000
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-29 18:47 +0100
Re: Simple way for web to execute root shell script. druck <news@druck.org.uk> - 2025-05-23 22:17 +0100
Re: Simple way for web to execute root shell script. Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-23 23:11 +0000
Re: Simple way for web to execute root shell script. c186282 <c186282@nnada.net> - 2025-05-24 01:43 -0400
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-24 09:20 +0100
Re: Simple way for web to execute root shell script. Richard Kettlewell <invalid@invalid.invalid> - 2025-05-24 10:58 +0100
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-24 11:27 +0100
Re: Simple way for web to execute root shell script. Eli the Bearded <*@eli.users.panix.com> - 2025-05-24 17:55 +0000
Re: Simple way for web to execute root shell script. Richard Kettlewell <invalid@invalid.invalid> - 2025-05-24 19:24 +0100
Re: Simple way for web to execute root shell script. Rich <rich@example.invalid> - 2025-05-24 15:41 +0000
Re: Simple way for web to execute root shell script. Andrew Smallshaw <andrews@sdf.org> - 2025-05-24 17:35 +0000
Re: Simple way for web to execute root shell script. Fritz Wuehler <fritz@spamexpire-202505.rodent.frell.theremailer.net> - 2025-05-24 23:34 +0200
Re: Simple way for web to execute root shell script. Dominik Ałaszewski <Dominik.Alaszewski@gazeta.pl.invalid> - 2025-05-26 17:24 +0000
Re: Simple way for web to execute root shell script. The Natural Philosopher <tnp@invalid.invalid> - 2025-05-26 20:44 +0100
Re: Simple way for web to execute root shell script. Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-26 22:22 +0000
Re: Simple way for web to execute root shell script. c186282 <c186282@nnada.net> - 2025-05-27 01:48 -0400
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