exec/bkgpslog

   1 #!/bin/bash
   2
   3 # Author: Steven Baltakatei Sandoval
   4
   5 #== Variable Initialization ==
   6
   7 #== Global constants ==
   8 PATH="/usr/local/bin/:$PATH"    # Add default OpenTimestamps path to PATH (necessary if cron used to call this script)
   9 PATH="/opt/bktei:$PATH"         # Add default baltakatei script install directory to PATH (necessary for other bk scripts)
  10 SCRIPT_HOSTNAME=$(hostname)     # Save hostname of system running this script.
  11 SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script.
  12 SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format.
  13 SCRIPT_DATE_SHORT="$(date +%Y%m%d)"          # Save current date in ISO-8601 format.
  14 #DIROUT1="/home/pi/Sync/Evanescent_Location"  # Define output directory.
  15
  16 #== Function Definitions ==
  17 echoerr() {
  18     echo "$@" 1>&2; # Define stderr echo function.
  19 } # Define stderr message function.
  20 showUsage() {
  21     echoerr "USAGE:"
  22     echoerr "    bkgpslog.sh [ options ]"
  23     echoerr
  24     echoerr "OPTIONS:"
  25     echoerr "    -h, --help"
  26     echoerr "            Display help information."
  27     echoerr
  28     echoerr "    --version"
  29     echoerr "            Display script version."
  30     echoerr
  31     echoerr "    -v, --verbose"
  32     echoerr "            Display debugging info."
  33     echoerr
  34     echoerr "    -o, --output [ directory ]"
  35     echoerr "            Specify output directory to save logs."
  36 } # Display information on how to use this script.
  37 showVersion() {
  38     echoerr "$SCRIPT_VERSION"
  39 } # Display script version.
  40 vbm() {
  41     if [ $OPTION_VERBOSE -eq "true" ]; then
  42         echoerr "$@"
  43     fi
  44 } # Verbose message display function.
  45 processArguments() {
  46     while [ ! $# -eq 0 ]; do   # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
  47         echoerr "DEBUG:Starting processArguments while loop."
  48         echoerr "DEBUG:Provided arguments are:""$@"
  49         case "$1" in
  50             --h | --help) showUsage; exit 1;; # Display usage.
  51             --version) showVersion; exit 1;; # Show version
  52             --v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
  53             --o | --output) if [ -d "$2" ]; then DIROUT1="$2"; fi ;; # Define output directory.
  54             *) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options.
  55         esac
  56         shift
  57     done
  58 } # Argument Processing
  59 checkExecutables() {
  60
  61 } # Check that certain executables exist.
  62
  63 main() {
  64     processArguments # Process arguments.
  65     checkExecutables "gpspipe" # Confirm that executables necessary to run are available.
  66 } # Main function.
  67
  68
  69
  70
  71
  72
  73 if [[ -d "$DIROUT1" ]] && command -v "gpspipe" 1>/dev/null 2>/dev/null ; then
  74     while true; do
  75         #echoerr "DEBUG:Starting while loop."
  76         # Update time constants
  77         TIME_CURRENT="$(date --iso-8601=seconds)" ;
  78         #echoerr "DEBUG:TIME_CURRENT is:""$TIME_CURRENT" ;
  79         TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"
  80         #echoerr "DEBUG:TIME_CURRENT_SHORT is""$TIME_CURRENT_SHORT"
  81         DATE_CURRENT="$(date -d "$TIME_CURRENT" --iso-8601=date)" ;
  82         #echoerr "DEBUG:DATE_CURRENT is:""$DATE_CURRENT" ;
  83         DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)" ;
  84         #echoerr "DEBUG:DATE_CURRENT is:""$DATE_CURRENT_SHORT" ;
  85         DATE_TOMORROW="$(date -d "$TIME_CURRENT next day" --iso-8601=date)" ;
  86         #echoerr "DEBUG:DATE_TOMORROW is:""$DATE_TOMORROW" ;
  87         TIME_NEXT_MIDNIGHT="$(date -d "$DATE_TOMORROW" --iso-8601=seconds)" ;
  88         #echoerr "DEBUG:TIME_NEXT_MIDNIGHT is:""$TIME_NEXT_MIDNIGHT" ;
  89         SECONDS_UNTIL_NEXT_MIDNIGHT="$((  $(date +%s -d "$TIME_NEXT_MIDNIGHT") - $(date +%s -d "$TIME_CURRENT")  ))" ;
  90         #echoerr "DEBUG:SECONDS_UNTIL_NEXT_MIDNIGHT is:""$SECONDS_UNTIL_NEXT_MIDNIGHT" ;
  91         if [ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -eq 0 ]; then echoerr "WARNING:Is it exactly midnight?" ; continue; fi ; # Exit loop early if equal to 0 because "timeout 0s" never ends.
  92         if [ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -lt 0 ]; then echoerr "ERROR:Time until midnight error." ; exit 1; fi ; # Exit script if equal to 0 because "timeout 0s" never ends.
  93
  94         # Update output file names.
  95         DIROUTN="$DIROUT1" ;
  96         FILEOUTN="$DATE_CURRENT_SHORT""..""$(hostname)""_location.nmea" ;
  97
  98         # Append location log until midnight.
  99         timeout "$SECONDS_UNTIL_NEXT_MIDNIGHT""s" gpspipe -r 1>> "$DIROUTN"/"$FILEOUTN" 2>>/dev/null ; # log raw nmea data
 100     done
 101
 102     #gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ;
 103
 104 else
 105     echo "$SCRIPT_TIME_SHORT"">gpspipe or $DIROUT1 not found." >> ~/"$SCRIPT_DATE_SHORT"..error.log ;
 106 fi