Redirect to stdout in bash -

is there filename assignable variable (i.e. not magic builtin shell token &1) let me redirect stdout?

what want run in cron script:

log=/tmp/some_file ... some_command 2>&1 >> $log echo "blah" >> $log ... 

conveniently, lets me turn off log noise redirecting /dev/null later when i'm sure there nothing can fail (or, @ least, nothing care about!) without rewriting whole script. yes, turning off logging isn't precisely best practice -- once script works, there not can conceivably go wrong, , trashing disk megabytes of log info nobody wants read isn't desired.
in case unexpectedly fails 5 years later, still possible turn on logging again flipping switch.

on other hand, while writing , debugging script, involves calling manually shell, extremely nice if dump output console. way wouldn't need tail logfile manually.

in other words, i'm looking /proc/self/fd/0 in bash-talk can assign log. happens, /proc/self/fd/0 works fine on linux box, wonder if there isn't such thing built bash (which preferrable).

basic solution:

#!/bin/bash log=/dev/null  # uncomment next line debugging (logging) # log=/tmp/some_file  {   some_command   echo "blah" } | tee 1>$log 2>&1 

more evolved:

#!/bin/bash  enable_log=0       # 1 log standard & error outputs log=/tmp/some_file  {   some_command   echo "blah" } | if (( $enable_log ))   tee 1>$log 2>&1 fi 

more elegant solution devsolar's idea:

#!/bin/bash  # uncomment next line debugging (logging) # exec 1> >(tee /tmp/some_file)  2>&1  some_command echo "blah"