systemd .service/.timer question (needing help)

[Trever L. Adams]

I am needing a bit of help. I am converting some of my old crontab
entries to xxx.timer and xxx.service systemd files. I have the following
(the system is a backup server that can be woken by magic packets or
some amount of time before the backups run):

ExecStart=/usr/sbin/rtcwake -m mem -t $(/usr/bin/date +\%s -d 'today
23:50') > /dev/null

It yeilds:

Invalid escape sequences in line, correcting: "/usr/sbin/rtcwake -m mem
-t $(/usr/bin/date +\%s -d 'today 23:50') > /dev/null"


Is there a way to correct this easily, or am I going to have to turn
that line into a separate shell script?

Thank you.

Trever

[Richard Shaw]

On Thu, Jun 15, 2017 at 4:12 PM, Trever L. Adams <
trever(a)middleearth.sapphiresunday.org&gt; wrote:

>  I am needing a bit of help. I am converting some of my old crontab
>  entries to xxx.timer and xxx.service systemd files. I have the following
>  (the system is a backup server that can be woken by magic packets or
>  some amount of time before the backups run):
>
>  ExecStart=/usr/sbin/rtcwake -m mem -t $(/usr/bin/date +\%s -d 'today
>  23:50') > /dev/null
>
>  It yeilds:
>
>  Invalid escape sequences in line, correcting: "/usr/sbin/rtcwake -m mem
>  -t $(/usr/bin/date +\%s -d 'today 23:50') > /dev/null"
>
>
>  Is there a way to correct this easily, or am I going to have to turn
>  that line into a separate shell script? 

SystemD executes the binaries directly without a shell so you can't use
shell variables and such. You could write a script or I think prepending
/usr/bin/bash on the front may work. You may need to put the commands in
quotes. Google should find you an example.

Thanks,
Richard

[Trever L. Adams]

Thank you, Richard. you answered another question I had about one. I can
now fix all of my cronjobs to be .service/.timer pairs.

Trever

On 06/15/2017 03:18 PM, Richard Shaw wrote:
>  On Thu, Jun 15, 2017 at 4:12 PM, Trever L. Adams
>  <trever(a)middleearth.sapphiresunday.org
>  <mailto:[e-mail]>> wrote:
>
>      I am needing a bit of help. I am converting some of my old crontab
>      entries to xxx.timer and xxx.service systemd files. I have the
>      following
>      (the system is a backup server that can be woken by magic packets or
>      some amount of time before the backups run):
>
>      ExecStart=/usr/sbin/rtcwake -m mem -t $(/usr/bin/date +\%s -d 'today
>      23:50') > /dev/null
>
>      It yeilds:
>
>      Invalid escape sequences in line, correcting: "/usr/sbin/rtcwake
>      -m mem
>      -t $(/usr/bin/date +\%s -d 'today 23:50') > /dev/null"
>
>
>      Is there a way to correct this easily, or am I going to have to turn
>      that line into a separate shell script?
>
>
>  SystemD executes the binaries directly without a shell so you can't
>  use shell variables and such. You could write a script or I think
>  prepending /usr/bin/bash on the front may work. You may need to put
>  the commands in quotes. Google should find you an example.
>
>  Thanks,
>  Richard 
>
>
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