effective user ID, 85. See also user ID
environment variables , 10, 160
error code. See exit code
error messages
common, 17 “19
compiler, 165, 197 “200
configure , 188 “189
kernel build, 215
linker, 167 “168
make , 172
printing, 260 “262
Samba, 289
scripts, 178 “179
understanding, 16 “17
/etc/fstab , 46 “47, 51 “52
/etc/ld.so.conf , 169 “170
/etc/ modprobe .conf , 225 “226
/etc/passwd , 68 “70. See also passwd
/etc/pcmcia , 122 “123, 237 “239
/etc/services , 113, 127. See also network, ports and services
/etc/syslog.conf , 66 “67
Ethernet
IP networking, 108 “109
network interface, 92 “93, 317 “318
networks, 107 “108
wireless, 121 “124, 318
executables
creating, 164 “165, 167 “172, 181 “182
file format, 209
locations, 30 “31
setuid, 22, 45, 152
shell scripts, 143 ( see also shell scripts)