Witajcie!
Mam do Was pytanie odnośnie kwestii, która nie związana jest stricte z programowaniem, jednak w pewnych sytuacjach się zazębia
Chodzi mi o program ls (linux).
Mam za zadanie napisac program przetwarzający plik tekstowy ls.txt i w związku z tym mam kilka pytań:
- Zamieszczam plik ls.txt
total 6216
-rwxr-xr-x 1 root root 729040 2009-03-02 15:22 bash
-rwxr-xr-x 1 root root 30140 2008-11-10 12:51 bunzip2
-rwxr-xr-x 1 root root 30140 2008-11-10 12:51 bzcat
lrwxrwxrwx 1 root root 6 2009-09-23 13:34 bzcmp -> bzdiff
-rwxr-xr-x 1 root root 2140 2008-11-10 12:51 bzdiff
lrwxrwxrwx 1 root root 6 2009-09-23 13:34 bzegrep -> bzgrep
-rwxr-xr-x 1 root root 4874 2008-11-10 12:51 bzexe
lrwxrwxrwx 1 root root 6 2009-09-23 13:34 bzfgrep -> bzgrep
-rwxr-xr-x 1 root root 3642 2008-11-10 12:51 bzgrep
-rwxr-xr-x 1 root root 30140 2008-11-10 12:51 bzip2
-rwxr-xr-x 1 root root 9524 2008-11-10 12:51 bzip2recover
lrwxrwxrwx 1 root root 6 2009-09-23 13:34 bzless -> bzmore
-rwxr-xr-x 1 root root 1297 2008-11-10 12:51 bzmore
-rwxr-xr-x 1 root root 30196 2008-06-27 02:31 cat
-rwxr-xr-x 1 root root 50784 2008-06-27 02:31 chgrp
-rwxr-xr-x 1 root root 46664 2008-06-27 02:31 chmod
-rwxr-xr-x 1 root root 50792 2008-06-27 02:31 chown
-rwxr-xr-x 1 root root 5472 2009-04-10 02:51 chvt
-rwxr-xr-x 1 root root 75492 2008-06-27 02:31 cp
-rwxr-xr-x 1 root root 118508 2009-02-15 18:39 cpio
-rwxr-xr-x 1 root root 87924 2008-11-05 08:51 dash
-rwxr-xr-x 1 root root 58960 2008-06-27 02:31 date
-rwxr-xr-x 1 root root 9620 2009-07-07 17:19 dbus-cleanup-sockets
-rwxr-xr-x 1 root root 297364 2009-07-07 17:19 dbus-daemon
-rwxr-xr-x 1 root root 5476 2009-07-07 17:19 dbus-uuidgen
-rwxr-xr-x 1 root root 50820 2008-06-27 02:31 dd
-rwxr-xr-x 1 root root 50812 2008-06-27 02:31 df
-rwxr-xr-x 1 root root 96216 2008-06-27 02:31 dir
-rwxr-xr-x 1 root root 5468 2009-02-18 20:43 dmesg
-rwxr-xr-x 1 root root 9652 2008-05-03 06:14 dnsdomainname
-rwxr-xr-x 1 root root 57884 2009-04-10 02:51 dumpkeys
-rwxr-xr-x 1 root root 26048 2008-06-27 02:31 echo
-rwxr-xr-x 1 root root 40440 2008-11-24 08:51 ed
-rwxr-xr-x 1 root root 96216 2008-11-04 22:16 egrep
-rwxr-xr-x 1 root root 26036 2008-06-27 02:31 false
-rwxr-xr-x 1 root root 9576 2009-04-10 02:51 fgconsole
-rwxr-xr-x 1 root root 55156 2008-11-04 22:16 fgrep
-rwxr-xr-x 1 root root 22536 2007-11-23 11:15 fuser
-rwsr-xr-x 1 root root 22064 2009-03-05 18:42 fusermount
-rwxr-xr-x 1 root root 100312 2008-11-04 22:16 grep
-rwxr-xr-x 1 root root 63 2008-10-15 09:32 gunzip
-rwxr-xr-x 1 root root 5874 2008-10-15 09:32 gzexe
-rwxr-xr-x 1 root root 57360 2008-10-15 09:32 gzip
-rwxr-xr-x 1 root root 9648 2008-05-03 06:14 hostname
-rwxr-xr-x 1 root root 207692 2008-11-05 04:11 ip
-rwxr-xr-x 1 root root 9572 2009-04-10 02:51 kbd_mode
-rwxr-xr-x 1 root root 13748 2009-03-18 23:17 kill
-rwxr-xr-x 1 root root 1374396 2009-02-10 17:13 ld_static
-rwxr-xr-x 1 root root 42564 2008-06-27 02:31 ln
-rwxr-xr-x 1 root root 82676 2009-04-10 02:51 loadkeys
-rwxr-xr-x 1 root root 35080 2009-04-04 07:49 login
-rwxr-xr-x 1 root root 96216 2008-06-27 02:31 ls
-rwxr-xr-x 1 root root 9452 2009-03-18 17:02 lsmod
-rwxr-xr-x 1 root root 34312 2008-06-27 02:31 mkdir
-rwxr-xr-x 1 root root 30220 2008-06-27 02:31 mknod
-rwxr-xr-x 1 root root 9552 2008-11-05 13:30 mktemp
-rwxr-xr-x 1 root root 30316 2009-02-18 20:43 more
-rwsr-xr-x 1 root root 76228 2009-02-18 20:43 mount
-rwxr-xr-x 1 root root 5400 2009-03-31 11:02 mountpoint
lrwxrwxrwx 1 root root 20 2009-09-23 13:34 mt -> /etc/alternatives/mt
-rwxr-xr-x 1 root root 30604 2009-02-15 18:39 mt-gnu
-rwxr-xr-x 1 root root 83732 2008-06-27 02:31 mv
-rwxr-xr-x 1 root root 153516 2009-03-30 12:23 nano
lrwxrwxrwx 1 root root 20 2009-09-23 13:34 nc -> /etc/alternatives/nc
-rwxr-xr-x 1 root root 22076 2008-06-22 00:40 nc.traditional
lrwxrwxrwx 1 root root 24 2009-09-23 13:34 netcat -> /etc/alternatives/netcat
-rwxr-xr-x 1 root root 109996 2008-11-11 18:11 netstat
-rwxr-xr-x 1 root root 34724 2009-04-10 00:46 ntfs-3g
-rwxr-xr-x 1 root root 5472 2009-04-10 00:46 ntfs-3g.probe
lrwxrwxrwx 1 root root 6 2009-09-23 13:34 open -> openvt
-rwxr-xr-x 1 root root 13776 2009-04-10 02:51 openvt
lrwxrwxrwx 1 root root 16 2009-09-23 13:34 pidof -> ../sbin/killall5
-rwsr-xr-x 1 root root 30856 2007-12-10 18:33 ping
-rwsr-xr-x 1 root root 26684 2007-12-10 18:33 ping6
-rwxr-xr-x 1 root root 79636 2009-03-18 23:17 ps
-rwxr-xr-x 1 root root 30200 2008-06-27 02:31 pwd
lrwxrwxrwx 1 root root 4 2009-09-23 13:34 rbash -> bash
-rwxr-xr-x 1 root root 38452 2008-06-27 02:31 readlink
-rwxr-xr-x 1 root root 50744 2008-06-27 02:31 rm
-rwxr-xr-x 1 root root 26052 2008-06-27 02:31 rmdir
lrwxrwxrwx 1 root root 4 2009-09-23 13:34 rnano -> nano
-rwxr-xr-x 1 root root 13940 2009-02-16 22:27 run-parts
-rwxr-xr-x 1 root root 42900 2008-05-03 08:53 sed
-rwxr-xr-x 1 root root 34440 2009-04-10 02:51 setfont
-rwxr-xr-x 1 root root 8794 2009-04-09 03:08 setupcon
lrwxrwxrwx 1 root root 9 2009-10-30 13:23 sh -> /bin/bash
lrwxrwxrwx 1 root root 4 2009-09-23 13:34 sh.distrib -> bash
-rwxr-xr-x 1 root root 26060 2008-06-27 02:31 sleep
-rwxr-xr-x 1 root root 48708 2008-06-27 02:31 stty
-rwsr-xr-x 1 root root 31012 2009-04-04 07:49 su
-rwxr-xr-x 1 root root 26044 2008-06-27 02:31 sync
-rwxr-xr-x 1 root root 9624 2009-02-18 20:43 tailf
-rwxr-xr-x 1 root root 252468 2008-05-03 09:40 tar
-rwxr-xr-x 1 root root 9516 2009-02-16 22:27 tempfile
-rwxr-xr-x 1 root root 46616 2008-06-27 02:31 touch
-rwxr-xr-x 1 root root 26036 2008-06-27 02:31 true
-rwxr-xr-x 1 root root 9664 2009-03-05 18:42 ulockmgr_server
-rwsr-xr-x 1 root root 55200 2009-02-18 20:43 umount
-rwxr-xr-x 1 root root 26052 2008-06-27 02:31 uname
-rwxr-xr-x 1 root root 63 2008-10-15 09:32 uncompress
-rwxr-xr-x 1 root root 2762 2009-04-10 02:51 unicode_start
-rwxr-xr-x 1 root root 96220 2008-06-27 02:31 vdir
-rwxr-xr-x 1 root root 946 2009-02-16 22:27 which
-rwxr-xr-x 1 root root 64 2008-10-15 09:32 zcat
-rwxr-xr-x 1 root root 69 2008-10-15 09:32 zcmp
-rwxr-xr-x 1 root root 4424 2008-10-15 09:32 zdiff
-rwxr-xr-x 1 root root 64 2008-10-15 09:32 zegrep
-rwxr-xr-x 1 root root 64 2008-10-15 09:32 zfgrep
-rwxr-xr-x 1 root root 2015 2008-10-15 09:32 zforce
-rwxr-xr-x 1 root root 4898 2008-10-15 09:32 zgrep
-rwxr-xr-x 1 root root 1733 2008-10-15 09:32 zless
-rwxr-xr-x 1 root root 2416 2008-10-15 09:32 zmore
-rwxr-xr-x 1 root root 4952 2008-10-15 09:32 znew
A oto moje pytania w związku z zamieszczonym plikiem txt.
Przykladowo wezmy linijke:
-rwxr-xr-x 1 root root 729040 2009-03-02 15:22 bash
Liczba wpisów - czy jest to liczba total, liczba linijek czy też liczba 729040?
Czy linijki sa tylko rekordami czy wlasciwymi wpisami, czy wpisy sa czyms innym?
Liczba plików zapisywalnych przez wlasciciela pliku: Hmm u swiadczy o wlascicielu a r to rewritable jednak i tak nie wiem ile wynosi ta liczba:(
Liczba plików zapisywalnych przez wszystkich.
Wypisz najczęstsze rozszerzenia plików - ? Nie wystepuja tutaj kropki, np w przypadku bash nie bedzie rozszerzenia?
Liczba plików zapisywalnych przez siebie tzn liczba plikow zapisywalnych przez wlasciciela pliku?
Bardzo prosze o przetlumaczenie:) Dzięki z góry! :-)