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Logging ALL standard out of a bash script to a log file, but still show on screen

 
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Old 09-23-2009
Logging ALL standard out of a bash script to a log file, but still show on screen
Is it possible to store all standard-out of a bash script and the binaries it calls in a log file AND still display the stdout on screen?

I know this is possible to store ALL stdout/stderr of a script to a single log file like:
exec 1>&${logFile}
exec 2>&1

But running a script with the above would make the script absolutely silent from the commandline, I was hoping for something like:

exec 1>& | tee -a ${logFile}
or
exec 1>& tee -a ${logFile}


But both of those fail.

And no, I don't have the option of modifying every outputable line in the script to have a (| tee -a ${logFile})
 
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rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a filename containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)