gcc -g -O2 -o iftop addr_hash.o edline.o hash.o iftop.o ns_hash.o options.o resolver.o screenfilter.o serv_hash.o sorted_list.o threadprof.o ui_common.o ui.o tui.o util.o addrs_ioctl.o addrs_dlpi.o dlcommon.o stringmap.o cfgfile.o vector.o -lpcap -lm -lcurses -lpthread
make[2]: Leaving directory `/home/iftop/iftop-1.0pre4'
make[1]: Leaving directory `/home/iftop/iftop-1.0pre4'
Making install in config
make[1]: Entering directory `/home/iftop/iftop-1.0pre4/config'
make[2]: Entering directory `/home/iftop/iftop-1.0pre4/config'
make[2]: Nothing to be done for `install-exec-am'.
make[2]: Nothing to be done for `install-data-am'.
make[2]: Leaving directory `/home/iftop/iftop-1.0pre4/config'
make[1]: Leaving directory `/home/iftop/iftop-1.0pre4/config'
make[1]: Entering directory `/home/iftop/iftop-1.0pre4'
make[2]: Entering directory `/home/iftop/iftop-1.0pre4'
/usr/bin/mkdir -p '/usr/local/sbin'
/usr/bin/install -c iftop '/usr/local/sbin'
/usr/bin/mkdir -p '/usr/local/share/man/man8'
/usr/bin/install -c -m 644 iftop.8 '/usr/local/share/man/man8'
make[2]: Leaving directory `/home/iftop/iftop-1.0pre4'
make[1]: Leaving directory `/home/iftop/iftop-1.0pre4'
命令执行完成后，可以看到iftop已经被安装到/usr/local/sbin目录下了