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See man grep on Solaris (https://www.unix.com/man-page/OpenSolaris/1/grep/). The xpg4 version has a -q option.

What do you mean map? This puts it in the variable $grep
You could do this:...

Standard grep uses POSIX BRE's (Basic regular expressions) which do not include alternation. So one should use egrep for that which supports ERE's (Extended Regular Expressions). The reason that \|...

You don't need to use eval - or egrep if you escape the infix |

Of course it runs... maybe it just doesn't find anything?

Show some of your input file

$ echo cats and dogs > file1
$...

What does that mean in concrete terms? Is there no output?

Did you try to run that command in the shell and see if it will work?
/usr/bin/grep -i 'dog\|cat' test.log
Also try
/usr/bin/grep -iE...

What about:


#!/bin/sh
TEST=test.log
GREP=/usr/bin/egrep

$GREP -i 'dog|cat' ${TEST}

In line 1 and 3 all backslashes should lean the other way...

Try:


eval $GREP ...


For indirect references you have to use eval.

HTH Chris

You removed the minus sign "-" from the last line, right?