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February 28, 2017 12:29
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How many users are logged in to the Linux PCs from the cs department at University of Bremen?
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| #!/bin/sh | |
| i=1 | |
| while [ $i -le 25 ]; do | |
| x=$( printf %02d $i ) | |
| printf "x%s: " "${x}" | |
| ssh '-o ConnectTimeout=3' "x$x.informatik.uni-bremen.de" "printf \"%s loadavg: %s\\n\" \"\$( who | grep -v '(unknown)' | wc -l)\" \"\$(cat /proc/loadavg)\"" | |
| i=$(( i + 1 )) | |
| done |
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