6:21 a.m.
Still haven't mastered bash, not even a jack (
Have strung some command(s) together in /etc/cron.daily
#!/bin/bash
## Download no-bebug rawhide kernel
/usr/bin/cd /var/cache/yum/x86_64/20/fedora-rawhide-kernel-nodebug-source/packages
&& \ /usr/bin/reposync --source -n =fedora-rawhide-kernel-nodebug
kernel && \
## used to rebuild new no-debug
## Rawhide kernels for non eol FedoraN
/usr/local/bin/mock-kernel ---> (which is below question)
Question: How do I prevent the above line from happening if nothing
new was downloaded?
#!/bin/bash
## rebuild no-debug kernel using mock
cd /etc/mock && \
/usr/bin/mock -r fedora-20-x86_64
--no-clean /var/cache/yum/x86_64/20/fedora-rawhide-kernel-nodebug-source/packages/*.rpm
&& \
/usr/bin/createrepo /var/lib/mock/fedora-20-x86_64/result && \
yum check-update && \
/usr/bin/mock -r mock -r
fedora-19-x86_64
/var/cache/yum/x86_64/20/fedora-rawhide-kernel-nodebug-source/packages/kernel
</snipped F18>
--
Regards,
Frank
www.frankly3d.com
4:52 a.m.
New subject: Script Help (Bash) SOLVED
On Sat, 28 Sep 2013 10:31:07 -0500
inode0 <inode0(a)gmail.com> wrote:
On Sat, Sep 28, 2013 at 6:21 AM, Frank Murphy
<frankly3d(a)gmail.com>
wrote:
> Still haven't mastered bash, not even a jack (
>
> Have strung some command(s) together in /etc/cron.daily
>
> #!/bin/bash
> ## Download no-bebug rawhide kernel
> /usr/bin/cd /var/cache/yum/x86_64/20/fedora-rawhide-kernel-nodebug-source/packages
> && \ /usr/bin/reposync --source -n =fedora-rawhide-kernel-nodebug
> kernel && \
> ## used to rebuild new no-debug
> ## Rawhide kernels for non eol FedoraN
> /usr/local/bin/mock-kernel ---> (which is below question)
> Question: How do I prevent the above line from happening if
> nothing new was downloaded?
While there might be a cleaner way to detect that something was
downloaded what I do is log the output from reposync and then
I decided to split it as two operations,
using
inotifywait on the watched dir.
it would then kickin mock as required.
--
Regards,
Frank
www.frankly3d.com
9:18 p.m.
New subject: Script Help (Bash) SOLVED
| > On Sat, Sep 28, 2013 at 6:21 AM, Frank Murphy <frankly3d(a)gmail.com>
| > wrote: [...]
| > > #!/bin/bash
Unless I really need bash, I use:
#!/bin/sh
More portable. You'll be surprised how little bash actually gives
you in scripting scenarios.
| > > ## Download no-bebug rawhide kernel
| > > /usr/bin/cd
/var/cache/yum/x86_64/20/fedora-rawhide-kernel-nodebug-source/packages
| > > && \ /usr/bin/reposync --source -n =fedora-rawhide-kernel-nodebug
| > > kernel && \
Two remarks:
I tend to write lines like the above as:
cmd1 \
&& cmd2
If you write:
cmd1 && \
cmd2
and accidentally put something after the slosh (such as some
spaces), the former layout will cause a syntax error (alerting
you) while the latter layout will quietly not work quite as
expected.
Second:
I almost invariably put:
set -ue
at the top of my scripts. This turns on -u: abort on an undefined
variable, VERY handy for catching assignment mistakes and -e:
abort on error, which means abort when any command has a non-zero
exit status _that has not been checked_.
This would let you write your script like this:
set -ue
cd /var/cache/yum/x86_64/20/fedora-rawhide-kernel-nodebug-source/packages
/usr/bin/reposync --source -n =fedora-rawhide-kernel-nodebug
and so on without all the tedious "&&" stuff.
It is surprisingly useful and easy to code under this regime,
and catches a long of simple mistakes.
Cheers,
--
Cameron Simpson <cs(a)zip.com.au>
Gross power consumption [...] such as 3D graphics and MPEG-2 are the
two applications which consume a disproportionate amount of power [...]
eating close to 18 watts of power. Close behind is Microsoft Word 7.0,
which consumes close to 16 watts of power.
11:44 a.m.
On Sat, Sep 28, 2013 at 11:30 AM, Frank Murphy <frankly3d(a)gmail.com> wrote:
On Sat, 28 Sep 2013 10:31:07 -0500
inode0 <inode0(a)gmail.com> wrote:
> While there might be a cleaner way to detect that something was
> downloaded what I do is log the output from reposync and then
>
> if grep -q Download REPOSYNCLOG; then
> # do stuff when new things were synced
> fi
>
> John
With bash would there be an
else
exit
?
You can add one if you want one.
if something; then
something
else
something else
fi
John
11:54 a.m.
hi frankly,
On 09/28/2013 11:30 AM, Frank Murphy wrote:
On Sat, 28 Sep 2013 10:31:07 -0500
inode0 <inode0(a)gmail.com> wrote:
> While there might be a cleaner way to detect that something was
> downloaded what I do is log the output from reposync and then
>
> if grep -q Download REPOSYNCLOG; then
> # do stuff when new things were synced
> fi
With bash would there be an
else
exit
?
frankly, no.
if the "if" fails, there is nothing else to do, so it will exit.
Maybe me need to lookup bash functions :(
frankly, would not hurt.
--
peace out.
in a world with out fences, who needs gates.
tc.hago.
g
.
11:30 a.m.
On Sat, 28 Sep 2013 10:31:07 -0500
inode0 <inode0(a)gmail.com> wrote:
While there might be a cleaner way to detect that something was
downloaded what I do is log the output from reposync and then
if grep -q Download REPOSYNCLOG; then
# do stuff when new things were synced
fi
John
With bash would there be an
else
exit
?
Maybe me need to lookup bash functions :(
--
Regards,
Frank
www.frankly3d.com
8:35 a.m.
On Sat, 28 Sep 2013 14:27:57 +0100
Junk <junk(a)therobinsonfamily.net> wrote:
reposync -p dest-dir would be easier.
Junk
That's cleaner,
but how do I stop the script if nothing to sync.
--
Regards,
Frank
www.frankly3d.com
8:27 a.m.
On 28 Sep 2013, at 14:19, Frank Murphy <frankly3d(a)gmail.com> wrote:
On Sat, 28 Sep 2013 13:55:15 +0100
"Patrick O'Callaghan" <pocallaghan(a)gmail.com> wrote:
> On Sat, Sep 28, 2013 at 12:21 PM, Frank Murphy
> <frankly3d(a)gmail.com> wrote:
>
>> /usr/bin/cd
>
>
> Without looking any further, this is clearly wrong. Even if there
> is a /usr/bin/cd file (see recent discussion) in order to have any
> effect on the current directory used by subsequent commands you
> *have* to use the Shell built-in cd.
>
> poc
I got around that by adding script to path,
then "alias my_script=". my_script"
so it download where I need it.
--
Regards,
reposync -p dest-dir would be easier.
Junk
8:19 a.m.
On Sat, 28 Sep 2013 13:55:15 +0100
"Patrick O'Callaghan" <pocallaghan(a)gmail.com> wrote:
On Sat, Sep 28, 2013 at 12:21 PM, Frank Murphy
<frankly3d(a)gmail.com> wrote:
> /usr/bin/cd
Without looking any further, this is clearly wrong. Even if there
is a /usr/bin/cd file (see recent discussion) in order to have any
effect on the current directory used by subsequent commands you
*have* to use the Shell built-in cd.
poc
I got around that by adding script to path,
then "alias my_script=". my_script"
so it download where I need it.
--
Regards,
Frank
www.frankly3d.com
7:55 a.m.
On Sat, Sep 28, 2013 at 12:21 PM, Frank Murphy <frankly3d(a)gmail.com> wrote:
/usr/bin/cd
Without looking any further, this is clearly wrong. Even if there is a
/usr/bin/cd file (see recent discussion) in order to have any effect on the
current directory used by subsequent commands you *have* to use the Shell
built-in cd.
poc
poc
10:31 a.m.
On Sat, Sep 28, 2013 at 6:21 AM, Frank Murphy <frankly3d(a)gmail.com> wrote:
Still haven't mastered bash, not even a jack (
Have strung some command(s) together in /etc/cron.daily
#!/bin/bash
## Download no-bebug rawhide kernel
/usr/bin/cd /var/cache/yum/x86_64/20/fedora-rawhide-kernel-nodebug-source/packages
&& \ /usr/bin/reposync --source -n =fedora-rawhide-kernel-nodebug
kernel && \
## used to rebuild new no-debug
## Rawhide kernels for non eol FedoraN
/usr/local/bin/mock-kernel ---> (which is below question)
Question: How do I prevent the above line from happening if nothing
new was downloaded?
While there might be a cleaner way to detect that something was
downloaded what I do is log the output from reposync and then
if grep -q Download REPOSYNCLOG; then
# do stuff when new things were synced
fi
John
3857
days inactive
3860
days old
10 comments
6 participants
participants (6)
-
Cameron Simpson -
Frank Murphy -
g -
inode0 -
Junk -
Patrick O'Callaghan