| 1 |
#!/usr/bin/env bash |
| 2 |
# Douglas Thrift |
| 3 |
# |
| 4 |
# CCS Computer Science |
| 5 |
# |
| 6 |
# Login Accounting |
| 7 |
|
| 8 |
wtmp='/var/log/wtmp.0' |
| 9 |
|
| 10 |
if [[ -f "$wtmp" ]]; then |
| 11 |
cat="`which cat`" |
| 12 |
elif [[ -f "$wtmp.gz" ]]; then |
| 13 |
cat="`which zcat`" |
| 14 |
wtmp="$wtmp.gz" |
| 15 |
elif [[ -f "$wtmp.bz2" ]]; then |
| 16 |
cat="`which bzcat`" |
| 17 |
wtmp="$wtmp.bz2" |
| 18 |
else |
| 19 |
echo "$wtmp doesn't exist" |
| 20 |
exit 2 |
| 21 |
fi |
| 22 |
|
| 23 |
echo -e '\nDoing login accounting:' |
| 24 |
|
| 25 |
declare -a name value |
| 26 |
declare -i count=0 |
| 27 |
|
| 28 |
for item in $("`which ac`" -pf <("$cat" "$wtmp") | "`which sort`" -nr -k 2); do |
| 29 |
if [[ $((count % 2)) -eq 0 ]]; then |
| 30 |
name[${#name[*]}]="$item" |
| 31 |
else |
| 32 |
value[${#value[*]}]="$item" |
| 33 |
fi |
| 34 |
count="$count + 1" |
| 35 |
done |
| 36 |
|
| 37 |
count="$count / 2" |
| 38 |
|
| 39 |
for (( index = 0; index != count; ++index )); do |
| 40 |
printf '\t%-16s %8.2f\n' "${name[$index]}" "${value[$index]}" |
| 41 |
done |
