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Scripting numpty question

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# 8  
Old 01-01-2013
Wrench
You can also use
Code:
wget -O - somewhereyourscripthostedat | sh

instead of scp and ssh (-x?). You don't need to chmod your script and actually it will be downloaded each time from one location and not actually saved on the target server
# 9  
Old 01-01-2013
Cheers polkan
That would need to be run from each machine wouldn't it? I suppose you could Cron it....
Looks nice and easy but I'm not sure how it'd work.
# 10  
Old 01-01-2013
Wrench
I run it from one (hub) machine that has ssh key authorized on the slave machines listed in the file "list.txt". Presuming "scripthostedat" is URL of the place the script I need to run hosted using http (for example, it can be anything wget can understand) exact command I need to run on the hub machine is:

Code:
for server in `cat list.txt`; do ssh $server -x "wget -O - scripthostedat | sh"; done

And my script is executed on each slave machine
# 11  
Old 01-01-2013
That is a useless use of cat and will break down when the list is large enough.

Code:
while read server ; do ...  ; done < list.txt

This User Gave Thanks to Corona688 For This Post:
polkan
# 12  
Old 01-02-2013
Wrench
TY, Corona, great link to the useless...

We was talking about about hundreds of servers - such a construction works good on hundreds items list on most *nixes out of box. But it can be easier to understand for not so professional Smilie
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