Show time elapsed with script

Support & Help Requests
1

I would like to modify this to display how much time has elapsed. If someone can give me a start,
I will work at the problem.

#!/bin/bash
#
#  Sound alarm after specifying time and message 
# Must input time delay AND message in double quotes !!
#
#       
# ** sleep can also accept intergers ex. sleep 7.63
# Made alias for it type al and time
# 2> /dev/null suppresses messages for amixer AND (c)vlc
#
soundfile="/usr/share/sounds/My_Sounds/Alarm-sound-buzzer.mp3"
#originalVolume=$(amixer -D pulse get Master | grep -m 1 -o -E [[:digit:]]+%)
clear
amixer -D pulse sset Master 100% > /dev/null 2>&1
if [ -f "$soundfile" ];
then
     echo "Soundfile is present."
else
      
  echo "File $soundfile does NOT exist."
  echo
  echo "Program will now exit."
  exit
fi

[ -z "$2" ] && {
echo 
echo -e "   Error!! No time value given and/or message specified !!"
echo
echo -e "   Alarm Program 2018"
echo
echo -e "   alarm.sh [time value in seconds] Message in double Quotes"; 
echo -e "   alarm 5m   = 5 minute alarm"
echo -e "   alarm 5h   = 5 hour alarm"
echo -e "   alarm 5d   = 5 day alarm"
echo -e "   alarm 1.5m = 1 minute 30 seconds alarm"
echo 
echo -e "   alarm.sh 1m "\"Tea is ready."\""  

echo 
exit 1; }

echo  -e "\033[32;5mTIMER COUNTING DOWN to $1 \033[0m"
sleep $1
{
    for ((volume = 35; volume <= 85; volume += 2)); do
        amixer -D pulse sset Master ${volume}% > /dev/null
        sleep .5
    done
} &

cvlc --play-and-exit "$soundfile" > /dev/null 2>&1
#set back to original volume
amixer -D pulse sset Master %85
echo $2

gxmessage -fg blue -font  'sans 20' -timeout 2 ' TIME IS UP !!'

I found something that may help. I don't know how to transfer the time from the command line to the hour and minute.

#!/bin/bash
GREEN='\033[0;32m'
RED='\033[0;31m'
YELLOW='\033[0;33m'
RESET='\033[0m'
hour=0
min=0
sec=11
tput civis
echo -ne "${GREEN}"
        while [ $hour -ge 0 ]; do
                 while [ $min -ge 0 ]; do
                         while [ $sec -ge 0 ]; do
                                 if [ "$hour" -eq "0" ] && [ "$min" -eq "0" ]; then
                                         echo -ne "${YELLOW}"
                                 fi
                                 if [ "$hour" -eq "0" ] && [ "$min" -eq "0" ] && [ "$sec" -le "10" ]; then
                                         echo -ne "${RED}"
                                 fi
                                 echo -ne "$(printf "%02d" $hour):$(printf "%02d" $min):$(printf "%02d" $sec)\033[0K\r"
                                 let "sec=sec-1"
                                 sleep 1
                         done
                         sec=59
                         let "min=min-1"
                 done
                 min=59
                 let "hour=hour-1"
         done
echo -e "${RESET}"
tput cnorm
2

I can't be sure I understand your question. But I think you are asking how to pass command line parameters into a bash script.

The first script includes the answer. "$1" in the script is the value of the first parameter, and "$2" is the second.

3

Yes, I want to pass command line parameters to the alarm script.

I know that $1 is the time while $2 is the message.

4

So what is the question?

echo displays text or variables to stdout--text is quoted, variables are preceeded with $.

You know how to get the time passed into the script.

So I think all the questions are answered--but clearly I'm not understanding what you're missing.

5

You may find what you want in this code snippet, which is in my .bashrc file. You could modify the parts inside the function into your script.

function countdown(){
   date1=$((`date +%s` + $1)); 
   while [ "$date1" -ge `date +%s` ]; do 
     echo -ne "$(date -u --date @$(($date1 - `date +%s`)) +%H:%M:%S)\r";
     sleep 0.1
   done
}

I didn't write it, and don't recall where I found it.

1 Like
6

On the date1 line, I get

syntax error: operand expected (error token is "+ ")

7

I pasted @charles-nix 's code to my terminal, then countdown 10 it counts down 10 seconds.

(I found the countdown() function here ... linux - Is there a way to display a countdown or stopwatch timer in a terminal? - Super User)

1 Like
8

Hmm. Some interesting comments here, but when I first read the question, "

My first thought was to just use the "time" command. If you call the script using the 'time' command it will then display time values on completion. For example, I have a script I run called "todaysfiles:

touch -t date +%m%d0000 /tmp/$$
find $1 -type f -newer /tmp/$$ -ls | sort -t ' ' -n -b +7
rm /tmp/$$

If I run it using the 'time ' command

'time todaysfiles' in my /tmp directory, after the display of files, I see

real 0m0.653s
user 0m0.013s
sys 0m0.006s

Is that helpful?

9

Your script times how long it takes your program to run.

I am looking to modify my alarm script so that it shows a countdown time as the time elapses.

10

Your script times how long it takes your program to run.

I am looking to modify alarm.sh to show the time remaining.

11

I can not get this to show my string?

countdown() {
    start="$(( $(date '+%s') + $1))"
    while [ $start -ge $(date +%s) ]; do
        time="$(( $start - $(date +%s) ))"
        printf '%s\r' "$(date -u -d "@$time" +%H:%M:%S)"
        printf  “Tea is ready."

        sleep 0.1
            done
}

stopwatch() {
    start=$(date +%s)
    while true; do
        time="$(( $(date +%s) - $start))"
        printf '%s\r' "$(date -u -d "@$time" +%H:%M:%S)"
        sleep 0.1
    done
}
12

The quote before Tea is different than the quote after ready. I added this to my .bashrc sourced it.
Also added a \n after Tea is ready. countdown 10 shows:

countdown() {
    start="$(( $(date '+%s') + $1))"
    while [ $start -ge $(date +%s) ]; do
        time="$(( $start - $(date +%s) ))"
        printf '%s\r' "$(date -u -d "@$time" +%H:%M:%S)"
        sleep 0.1
    done
    printf  "Tea is ready.\n"
}

user@lake:~$ countdown 5
Tea is ready.
user@lake:~$

13

Thanks pavlos_kairus.

.bashrc is like one big collection of scripts that can be run.

:slight_smile:

14

Hi fixit7,
I really like your script so I started to toy around a bit with it.
I edited your script a bit until it mostly did what you asked.

I skipped the fractions part, bash only supports integers.
There are several ways though (by using, for instance, the 'bc' command) but I'll leave that up to you for the moment.

I hope I didn't make a mess of it
( btw I used a line from @charles-nix 's example) :

#!/bin/bash
#
# "I am looking to modify my alarm script
# so that it shows a countdown time as the time elapses"
#
#  Sound alarm after specifying time and message 
# Must input time delay AND message in double quotes !!
#       
# ** sleep can also accept intergers ex. sleep 7.63
# Made alias for it type al and time
# 2> /dev/null suppresses messages for amixer AND (c)vlc

soundfile="/usr/share/sounds/My_Sounds/Alarm-sound-buzzer.mp3"

#set back to original volume when leaving this script, even on Ctrl-C
trap "amixer -D pulse sset Master %85" EXIT
trap "exit" INT TERM

#originalVolume=$(amixer -D pulse get Master | grep -m 1 -o -E [[:digit:]]+%)
clear
amixer -D pulse sset Master 100% > /dev/null 2>&1
if [ -f "$soundfile" ];
then
     echo "Soundfile is present."
else
  echo -e "File $soundfile does NOT exist.\n\nProgram will now exit.\n"
  exit
fi


# Below, I cleaned it up a bit by using a  "here document"

[ -z "$2" ] && cat<<ERRORMESSAGE && exit 1

   Error!! No time value given and/or message specified !!

   Alarm Program 2018

   alarm.sh [time value in seconds] Message in double Quotes 
   alarm 5m   = 5 minute alarm
   alarm 5h   = 5 hour alarm
   alarm 5d   = 5 day alarm
   alarm 1.5m = 1 minute 30 seconds alarm

   alarm.sh 1m "Tea is ready."  

ERRORMESSAGE

# alternative way to do colors
Reset=$( tput sgr0    ) ; Bl=$( tput blink   ) ; Gr=$( tput setaf 2 )

echo  -e "${Gr}${Bl}TIMER COUNTING DOWN to $1${Reset}"


# countdown display
# below is the part you are insterested in
# it replaces your "sleep" command


#this converts days,hours,months to seconds
case "$1" in
*d ) fact=86400 ;;
*h ) fact=3600  ;;
*m ) fact=60    ;;
*  ) fact=1     ;;
esac
(( period = ${1/[a-z]/} * fact ))


#this calculates the endtime based on 'now'
start=$( date +"%s" ) ; (( finish = start + period ))


# this is the counter,  based around charles-nix's counter format idea 
while (( period >= 0 ))
do
       echo -ne "$(date -u --date @${period} +%H:%M:%S)\t\t\r";
       (( period = finish - $( date +%s ) )) 2>/dev/null
done	    	 


# Fade-in process:
#you used curly brackets but you probably wanted  parenthesis
(
    for ((volume = 35; volume <= 85; volume += 2)); do
        amixer -D pulse sset Master ${volume}% > /dev/null
        sleep .5
    done
) &


cvlc --play-and-exit "$soundfile" &> /dev/null
echo $2

gxmessage -fg blue -font  'sans 20' -timeout 2 ' TIME IS UP !!'
1 Like
15

It worked well.

if [ ! -f "$soundfile" ];

This is what is needed.

if [ -f "$soundfile" ];

16

Oops, that was something I forgot to change back after some testing :blush:
I'll correct it.

17

No problem.

One other thing.

My string is getting chopped off.

Soundfile is present.
TIMER COUNTING DOWN to 1s
Tea00:00
18

Your 'tea is ready' is printed earlier than the 00:00 of the counter.
That means that the counter is backgrounded.
That is weird, this is my output:

Soundfile is present.
TIMER COUNTING DOWN to 1s
Tea is ready.

What happens if you place an 'echo' between counter and fade-in process ?

19

Well, I was not clear on what you wanted based on the phrasing of your question. I see others have already offered solutions, so I'll not confuse the issue.

1 Like
20

Well, OldStrummer I do appreciate your help.