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bashdatewhile-looptimestampunix-timestamp

Problem generating timestamps in a loop in Bash

When I run the command: 

timestamp=$(date+"%s") ; echo "$timestamp"

there is no error.

However when I try to run it in a loop like:

while [  $COUNTER -lt 10 ]; do  ts=$(date+"%s") ; echo "$ts" ; let COUNTER=COUNTER+1 ;  done

"-bash: date+%s: command not found" error is thrown. Why?

Solution 
  • while [  $COUNTER -lt 10 ]; do  ts=$(date +"%s") ; echo "$ts" ; let COUNTER=COUNTER+1 ;  done

    you need to write it with a space $(date +"%s")