logexec.sh runs a command with params and logs stderr & stdout output to a timestamped logfile

logexec.sh

# [2016Dec26 MCK] - logexec.sh - this script runs the given command, redirects Stderr to Stdout, & tees the output to the screen and a logfile
# [2021Feb22 MCK] - updated to re-write the leading '.' character when scripts from the current directory are executed
# [2022Nov03 MCK] - commented out conditional around shortname test on line 27/28 since the '[[' causes errors 
# [2024Dec05 MCK] - Adding log heading to fully print CMD before running it

TODAY=`date "+%Y%m%b%d-%H%M"`

usage ()
{
        echo "
#
#  Usage: use $0 to execute a command (ie: apt-get install) and log the output to a logfile with today's date 
# 
#       this script takes one (1) or more parameters: 
#       * the command to execute, and any other parameters on the same command-line
#       
"
}

if [ $# -lt 1 ]
then usage
else
	CMD="$*"
	LOGNAME=$(echo $CMD| sed -e 's/^\./_/ ; s/[^A-Za-z0-9._-]/_/g')
	
	MAXLENGTH=80
	lenLOGNAME=${#LOGNAME}
	
	# this if/then conditional fails due to the '[[' being interpreted as command that cannot be found
	#if [[ "$lenLOGNAME"  -gt "$MAXLENGTH" ]]
	#then
		SHORTNAME=${LOGNAME:0:$MAXLENGTH}
		LOGNAME=$SHORTNAME
	#fi

	echo -e "======= \n >>> $CMD \n=+=+=+= \n" 2>&1 | tee -a ${LOGNAME}.$TODAY.log
        ( $CMD ) 2>&1 | tee -a ${LOGNAME}.$TODAY.log
fi