Assigning evaluated expression to a variable

kaushikraman · #1 (**permalink**) 07-21-2008

Hello,

Could you please let me know what is the problem here..
28:var1="SERVER_$j"
29:eval $var1=`grep "^DBSERVER=" "$i" |cut -d"=" -f2`

i get this error:

syntax error at line 29 : `|' unexpected

Thanks for your quick response..This is urgent..pls..

Regards
Kaushik

zaxxon · #2 (**permalink**) 07-21-2008

Sorry, have no working solution yet - can't delete my post, sorry

zaxxon · #3 (**permalink**) 07-21-2008

That should hopefully work - tested it on some similar example.

Code:

var1="SERVER_$j"
TMP_VAR="`grep "^DBSERVER=" "$i" |cut -d"=" -f2`"
eval ${var1}="${TMP_VAR}"

kaushikraman · #4 (**permalink**) 07-22-2008

It still does not work...Does it have to do something with the filename being conatined in the variable i?

Vi-Curious · #5 (**permalink**) 07-22-2008

Code:

 
#!/usr/bin/bash
i=test.txt
j=B10
var1=SERVER_"$j"
echo "DBSERVER = $var1"
eval var1=`grep "^DBSERVER=" "$i" | cut -d"=" -f2`
echo "DBSERVER = $var1"

With file test.txt containing:

Code:

 
line 1
 DBSERVER=SERVER_XXX
line 3
DBSERVER=SERVER_A1
line 5

Produces the following when run:

Code:

 
HOSTNAME:> test.sh
DBSERVER = SERVER_B10
DBSERVER = SERVER_A1

kaushikraman · #6 (**permalink**) 07-22-2008

Thanks folks..Problem got resolved..there was a mismatching '`' above the mentioned lines of code which was causing the problem..

Thank you...
Regards
Kaushik

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