CODEWITHSUNDEEP
linuxbashcounterincrement
Luis Vito
Luis Vito

Reputation: 83

Re-execute a command by a given time interval in bash

Is there a way to Re-execute a command by a given time interval in bash? I want Weather to be re-executed every 30 min. here is example of my script:

#!/bin/bash

#Show time, date and clickable calendar
clock() {
    curtime=`date '+%I:%M'` 
    curdate=`date '+%d-%m-%Y'`
    echo "%{A:/usr/bin/gsimplecal:}%{T2} %{T1}$curdate%{A} %{T2} %{T1}$curtime"
}


volume1() {
    amixer get Master | sed -n 'N;s/^.*\[\([0-9]\+%\).*$/\1/p'
 }

#weather
weather(){
  curl -s "$(curl -s 'http://www.wunderground.com/' | sed -n '/Full Forecast/{s#[^"]*"\([^"]*\)".*#http://www.wunderground.com\1#p}')" | sed -n '/"curCond"/{ s#.*wx-value[^>]*>\([^<]*\)<.*#\1#; h }; /"curTemp"/{ N; N; N; s#.*wx-value[^>]*>\([^<]*\)<.*wx-unit[^>]*>&deg;\(.\).*#\1°\2 #; G; s#\n##; p }'
    echo $weather
    }

while :; do

echo "%{B#DDecf0f1}%{F#2c2c2c}%{T2}%{l}    $(groups)    %{T1}$(curwin) %{r}%{F#2C2C2C}  $(weather) $(space)|$(space) VOL: $(volume1) $(space)|$(space) $(uptime)  $(space)|$(space)   $(clock) %{A2}$(curwin)"

sleep 1 #sleep of mainloop

done

Upvotes: 1

Views: 326

Answers (1)

Rany Albeg Wein
Rany Albeg Wein

Reputation: 3474

I suggest you to use cron to run your script periodically.

If you only want to run a specific function from your script ( e.g. weather() ), add a switch statement to your script in which you'll perform a check if a certain option was provided, for example -w for executing the weather() function.

When you edit crontab to run every 30 minutes ( i.e. 0,30 * * * * my_script ), provide -w to your script in order to execute weather() only - 0,30 * * * * my_script -w

Upvotes: 1

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