Listing 1: The load Script

1: #
2: # load: Display system load, with suggestions as to how appropriate a
3: #       time it is to run a CPU-intensive process.
4: #
5:
6: echo
7: echo "     SYSTEM LOAD ANALYSIS"
8: echo
9:
10: uptime | awk '{
11:     val = $(NF - 2)
12:
13:     if (substr(val, length(val), length(val)) == ",")
14:         val = substr(val, 1, length(val)-1)
15:
16:     printf "The current system load is %s\n\n", val
17:
18:     if (val < 1) {
19:         print "This is a very light system load."
20:         print "It is a good time to run a report."
21:     }
22:     else if (val < 1.5) {
23:         print "This is a relatively light system load. It is OK to run"
24:         print "a report now."
25:     } else if (val < 2) {
26:         print "This is a moderate system load. Long reports will slow"
27:         print "the system down a bit, but go ahead if you must."
28:         print "Better yet, for low-priority reports, wait until the"
29:         print "system load drops below 1.00."
30:     } else if (val < 3) {
31:         print "This is a medium-to-heavy load.