Le 01/06/2012 23:56, Arno Teunisse a écrit :
One question about compound variables :
# uname -a on my linux give me back :
#Linux arnot-VirtualBox 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7
14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
# So I use the following code to store the items I want into a compound
variable:
str=$(uname -a)
typeset -C uname # declare a compound variable
uname.os=${str:0:5} # ${str:start:length} is substr ( perl speaking )
uname.virtualMachine=${str:6:16}
uname.linuxKernel=${str:23:16}
uname.osName=${str:40:10}
uname.date=${str:55:27}
uname.arch=${str:84:5}
uname.end=${str:104:9}
# trying , in a loop to get at the values :
for i in ${!uname.*}
do
print $i '->' ${i} VALUE??
done
output of the script :
uname.arch -> uname.arch VALUE??
uname.date -> uname.date VALUE??
uname.end -> uname.end VALUE??
uname.linuxKernel -> uname.linuxKernel VALUE??
uname.os -> uname.os VALUE??
uname.osName -> uname.osName VALUE??
uname.virtualMachine -> uname.virtualMachine VALUE??
I do not get back the value of the compound variable : What am I doing
wrong ???
use nameref to evaluate the value of $i :
str="Linux arnot-VirtualBox 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7
14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux"
...
for i in ${!uname.*}
do
nameref j=$i
print $i '->' $j
done
also, take a look at src/cmd/ksh93/tests and
http://svn.nrubsig.org/svn/people/gisburn/scripts/
Regards,
Cyrille Lefevre
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