calculating
currency values, 188 “92
loan payments, 84 “86
calculators
floating-point arbitrary-precision , 29 “31
interactive, 73 “75
cat command, 46, 212, 270
cgi-bin directory, 203, 243
changetrack script, 196, 196 “200
checkexternal script, 232 “35
checkForCmdInPath method, 13
checking spelling, 75 “76
checklibrary script, 182 “86
checklinks script, 178, 230 “32
checkspelling script, 75 “76
color sequences, ANSI. See ANSI color sequences
commands, user . See user commands
compress program, 104, 106
compressed files
code, 104 “7
ensuring maximally compressed files, 107 “9
connecttime script, 166 “68
contact forms, processing, 211 “14
contactus.html. web page, 213
convertatemp script, 82 “84
cron jobs, 152 “54
code, 152 “53
crontab entries, validating, 147 “52
code, 148 “50
hacking script, 152
results of script, 151
running script, 151
crontab file, 147, 151, 285
currency values, calculating, 188 “92
cut command, 20, 86, 262, 311