shell scripting error logging

Question

Hi all,

I'm trying to setup a simple logging framework in my shell scripts. For this I'd like to define a "log" function callable as

log "LEVEL" $message

Where the message is a variable to which I have previously redirected the outputs of executed commands. My trouble is that I get errors with the following

{message=command 2>&3 1>&3 3>&-} >&3
log "INFO" $message

There's something wrong isn't there?

TIA

Answer 1

Perhaps you want:

message=$( command 2>&1 )
log INFO "$message"

Answer 2

In addition to the $(), you need to use spaces and a semicolon with your curly braces (if you even need them):

{ command; }