Shell Programming and Scripting

Hi All,
I have a doubt.
Can we assign a regular expression for pattern searching to a variable in a script and then use that variable in place of a regular expression in sed command.I tried but got some syntax error!!Is it not possible.Because my requirement is that i have a generic script to get a threat number from a pstack command of a particulat process id and then i have to seach for that thread in the stack.How can i do it??
Thanks in advance.

Thanks a lot,Thats where i was making a mistake.
i guess this is the correct syntax:
sed -n "/ $var /p"

with this i will get an output but from that i have to delete any special character that comes for eg:
angle bracket or comma or full stop.
i am using this command but it is not working

sed 's/^( ^, //'

it is showing garbled sed command

could you please help?

my current output is ---> (af43a8,

but my desired output is ---> af43a8

How to get it?

That depends on the value of $var. What is it?

Code:

sed 's/^[(  ^,]//'

I tried tha above code sed 's/^[( ^,]//'
but it is only removing the leading angle bracket how to modify this command so that it can remove trailing comma also??

i have a keyword as (157c328,
with above sed command the output is coming like 157c328,
but i want output as 157c328 i.e without comma,do i have to issue another sed command to remove trailing comma or it can be done only with a single sed command to remove both leading bracket and trailing comma??
Thanks

I have another problem with SED command.

i have a file which looks like this:
file1{
CPS: Error registering CPS with MBean Server -- this will NOT affect the normal functioning of the program -- CPS w
ill just not be available for dynamic reloading: java.lang.NoClassDefFoundError: javax/management/modelmbean/ModelM
BeanInfo

******* Command Response *******

CMD RESPONSE = tfwk15On:true
tfwk15FullyOn:true
}

here i want to get the final output as true for tfwk15FullyOn

my problem is
i am using a command like this:

cat file1 |sed 's/tfwk15FullyOn:/@/g' |awk -F"@" '{print $2}'| sed '/^$/d' | sed -e 's/^.*{\(.*\)},*/\1/'


with this command i need to get output as true

but instead i am getting as output which looks like

CPS: Error registering CPS with MBean Server -- this will NOT affect the normal functioning of the program -- CPS will just not be available for dynamic reloading: java.lang.NoClassDefFoundError: javax/management/modelmbean/ModelM
BeanInfo
true

whereas i want output as true only...
Is there something wrong with my sed usage??
also here i am using two sed command ,is there any way that it can be done with one sed command??

Thanks in advance