super.sh


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#!/usr/bin/bash
# SJP 9 Nov 2021
#
# Append the argument to a file, with datestamp

theDate=$(\date -I)     # ISO 8601, natch

# Where to store the log file
logFile=~/box/leger/etc/superLog.txt

# to log a value, the user must include it as an argument
if [ -z $1 ]
    then 
        echo "Usage: provide an argument for super.sh to append to the log"
        exit 1
fi

if [ $1 != "tail" ]
   then
      echo $theDate,$1 >> $logFile
      #printf '%s,%s\n' $theDate ,$1   >> $logFile
fi

# Note: double quote expression to preserve carriage returns (thanks, stackoverflow)
echo "$(tail ${logFile})"