How can I grep variable?
 

I want to And search grep shell

but It's hard to grep variable


---------------------------------------------------------------
#!/bin/bash


if [ $# -eq 0 ]
then
echo "Ussage: phone searchfor [...searchfor]"
echo "(You didn't tell me what you want to search for )"

else

pass=0
find=""

for idx in $*
do
if [ -n "$idx" ]
then
if [ $pass -eq 0 ]
then
find=$(egrep "$idx" mydata)
pass=1

else

find=$("$find" | grep "$idx")

echo $find
fi
fi

done

if [ -z "$find" ]
then
echo "There is no such thing"
else

echo $find | awk -f display.awk

fi

fi

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there is one error : command not found

in find=$("$find" | grep "$idx")

how can I grep variable and store it into variable?

Unless $find is a command I am not how you think the pipe will work? Maybe try calling a command on the variable, say echo, then there is some standard input for grep and the pipe to work with.

Also, what would be the point? Is it likely that $find will have multiple lines in it? If not, why use grep?

Not sure what you want but maybe you could just run env and then grep.

or if you want to list just the environment variables without the values;