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Outputs only the 'up' section of the uptime command in pretty form, supporting most Linux distro and Mac OS X.
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| #!/bin/sh | |
| # Referenced this stackoverflow answer by John1024: https://stackoverflow.com/a/28353785/2372698 | |
| uptime -p >/dev/null 2>&1 | |
| if [ "$?" -eq 0 ]; then | |
| # Supports most Linux distro | |
| # when the machine is up for less than '0' minutes then | |
| # 'uptime -p' returns ONLY 'up', so we need to set a default value | |
| UP_SET_OR_EMPTY=$(uptime -p | awk -F 'up ' '{print $2}') | |
| UP=${UP_SET_OR_EMPTY:-'less than a minute'} | |
| else | |
| # Supports Mac OS X, Debian 7, etc | |
| UP=$(uptime | sed -E 's/^[^,]*up *//; s/mins/minutes/; s/hrs?/hours/; | |
| s/([[:digit:]]+):0?([[:digit:]]+)/\1 hours, \2 minutes/; | |
| s/^1 hours/1 hour/; s/ 1 hours/ 1 hour/; | |
| s/min,/minutes,/; s/ 0 minutes,/ less than a minute,/; s/ 1 minutes/ 1 minute/; | |
| s/ / /; s/, *[[:digit:]]* users?.*//') | |
| fi | |
| echo "up $UP" |
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