I would like to save the output of the uptime command into a csv file in a Bash script. Since the uptime command has different output formats based on the time since the last reboot I came up with a pretty heavy solution based on case, but there is surely a more elegant way of doing this.

uptime output:

 8:58AM  up 15:12, 1 user, load averages: 0.01, 0.02, 0.00

desired result:

15:12,1 user,0.00 0.02 0.00,

current code:

case "`uptime | wc -w | awk '{print $1}'`" in
#Count the number of words in the uptime output

10)
    #e.g.:  8:16PM  up  2:30, 1 user, load averages: 0.09, 0.05, 0.02
    echo -n `uptime | awk '{ print $3 }' | awk '{gsub ( ",","" ) ; print $0 }'`","`uptime | awk '{ print $4,$5 }' | awk '{gsub ( ",","" ) ; print $0 }'`","`uptime | awk '{ print $8,$9,$10 }' | awk '{gsub ( ",","" ) ; print $0 }'`","
    ;;

12)
    #e.g.: 1:41pm  up 105 days, 21:46,  2 users,  load average: 0.28, 0.28, 0.27
    echo -n `uptime | awk '{ print $3,$4,$5 }' | awk '{gsub ( ",","" ) ; print $0 }'`","`uptime | awk '{ print $6,$7 }' | awk '{gsub ( ",","" ) ; print $0 }'`","`uptime | awk '{ print $10,$11,$12 }' | awk '{gsub ( ",","" ) ; print $0 }'`","
    ;;

13)
    #e.g.: 12:55pm  up 105 days, 21 hrs,  2 users,  load average: 0.26, 0.26, 0.26
    echo -n `uptime | awk '{ print $3,$4,$5,$6 }' | awk '{gsub ( ",","" ) ; print $0 }'`","`uptime | awk '{ print $7,$8 }' | awk '{gsub ( ",","" ) ; print $0 }'`","`uptime | awk '{ print $11,$12,$13 }' | awk '{gsub ( ",","" ) ; print $0 }'`","
    ;;
esac