Article
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Listing 1
Listing 2
Listing 3: The sysload.sh Script
1: #
2: # sysload.sh: log system load
3: # (called from cron table)
4: #
5: # Written by Leor Zolman, 6/17/91
6: #
7: # usage:
8: # sysload.sh daily (run periodically throughout the day)
9: # sysload.sh final (run once at the end of the day)
10: #
11: # When $1 is "daily": adds a line to DAYLOG with the current 15-minute
12: # load average.
13: #
14: # When $1 is "final": computes average of all daily entries in DAYLOG. An
15: # entry noting this average is appended to AVGLOG. The contents of DAYLOG
16: # and the average are then appended to LOADLOG, and DAYLOG is deleted.
17: # Then, if this is Friday, the average of the 5 daily averages is
18: # also computed and appended to AVGLOG.
19: #
20: #
21:
22: debug=N
23: ADMINGRP=tech # System administration group id on your system
24:
25: if [ $debug = N ]; then
26: DAYLOG=/u3/General/Ltmp/sysload.day
27: LOADLOG=/u3/General/Ltmp/sysload.log
28: AVGLOG=/u3/General/Ltmp/sysload.avg
29: else
30: DAYLOG=day
31: LOADLOG=log
32: AVGLOG=avg
33: fi
34:
35: [ $# -ne 1 ] && echo "usage: $0 {daily | final}" >&2 && exit 1
36:
37: case $1 in
38: daily)
39: if [ ! -r $DAYLOG ]; then
40: touch $DAYLOG
41: chmod 664 $DAYLOG
42: chgrp $ADMINGRP $DAYLOG
43: fi
44: echo `date +"%a %D %T"`: `uptime |
45: awk '{
46: txt = $(NR)
47: if (substr(txt, length(txt), length(txt)) == ",")
48: txt = substr(txt, 1, length(txt)-1)
49: print txt
50: }'` >>$DAYLOG
51: break;;
52:
53: final)
54: [ ! -r $DAYLOG ] && echo "$0: Cannot open $DAYLOG" >&2
&& exit 1
55: if [ ! -r $LOADLOG ]; then
56: touch $LOADLOG
57: chmod 664 $LOADLOG
58: chgrp $ADMINGRP $LOADLOG
59: fi
60: if [ ! -r $AVGLOG ]; then
61: touch $AVGLOG
62: chmod 664 $AVGLOG
63: chgrp $ADMINGRP $AVGLOG
64: fi
65: tmp=`tmpname sld`
66: echo "`date +\"%a %D\"`: \c" >$tmp
67: awk '{
68: total = total + $4
69: count = count + 1
70: }
71: END {
72: printf("\tAverage for the day: %5.2
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