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Error in eval eval command to print html tags


 
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# 1  
Error in eval eval command to print html tags

anyone has any info on why this is complaining???

Code:
vivek@vivek-c5e55ef2e ~/TAC
$ zoneCounter=1

vivek@vivek-c5e55ef2e ~/TAC
$ optUsage1=23%

vivek@vivek-c5e55ef2e ~/TAC
$ eval eval echo "<th>Zone $zoneCounter </th><th align=\"left\"> \$optUsage$zoneCounter </th>"
-bash: syntax error near unexpected token `<'

any help is appreciated.. thanks
# 2  
It is taking <, > and so forth to be redirection instead of text. This is because you are using eval, telling it to process the text as a shell statement, not as a quoted string.

If you explained exactly what you were trying to do, we might be able to find away avoiding eval and it's many problems (only one of which you've just discovered).
# 3  
After the first pass through the sh parser, there are multiple unquoted redirections.

Regards,
Alister
# 4  
what i am trying to achieve is i want to store different strings with dynamic variables.. and use this variable and echo them to html file...
zoneCounter can have any number of values starting from 1... and variable optUsage should hold values sepecific to that zoneCounter

so my final output should me as below

Code:
<th>Zone 1 </th><th align="left"> 23%</th>


found one more issue with eval :-(

Code:
vivek@vivek-c5e55ef2e ~/TAC
$ zoneCounter=2

vivek@vivek-c5e55ef2e ~/TAC
$ temp=$( cat TACHCAutomation.OutputZ$zoneCounter | grep "CCM-JVM-CPU:" | awk -F'CCM-JVM-CPU:' '{print $2}' )

vivek@vivek-c5e55ef2e ~/TAC
$  echo $temp
Not able to fetch HQE value....May be HQE Not running

vivek@vivek-c5e55ef2e ~/TAC
$ eval eval jvmCPU$zoneCounter=$( echo $temp )
-bash: able: command not found

vivek@vivek-c5e55ef2e ~/TAC

# 5  
You've just repeated the method you want, not the actual goal.

To template a bunch of text in shell, I'd put them in a here-document like this:

Code:
cat <<EOF
<th>Zone $zoneCounter </th><th align="left"> $optUsage$zoneCounter </th>
EOF

Much less escaping and doublethink.
# 6  
To be more specific regarding the original error: echo ><.

Another suggestion regarding a template: You can use printf. The "template" is the format string. The remaining arguments populate the template. But, for immediate output, Corona688's suggestion is probably best.

Regards,
Alister
# 7  
i tried both EOF and printf.. it dint work..or may be i am doing it wrong..

i think i dint explain properly.. here $optUsage$zoneCount is a single variable.... when formed properly it will be either variable optUsage1, optUsage2, optUsage3 which may hold any different values... for this reason i tried with eval command



Code:
vivek@vivek-c5e55ef2e ~/TAC
$ optUsage1=2%

vivek@vivek-c5e55ef2e ~/TAC
$ cat <<EOF
<th>Zone $zoneCounter </th><th align="left"> $optUsage$zoneCounter </th>
EOF
<th>Zone 1 </th><th align="left"> 1 </th>

vivek@vivek-c5e55ef2e ~/TAC


vivek@vivek-c5e55ef2e ~/TAC
$ optUsage1=2%

vivek@vivek-c5e55ef2e ~/TAC
$ printf "<th>Zone $zoneCounter </th><th align=\"left\"> $optUsage$zoneCounter </th>"
<th>Zone 1 </th><th align="left"> 1 </th>
vivek@vivek-c5e55ef2e ~/TAC

and one more thing is Even if end of file works how to redirect/append it to some file

one of my command reads something like this, where the output html tags with strings are redirected to html file..
Code:
eval eval echo "<th>Zone $zoneCounter </th><th align=\"left\"> \$optUsage$zoneCounter </th>">>TACHCAutomationtemp2.txt


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