Warum sollte eine bestimmte man
Seite (in meinem Fall für den nc
Befehl) das heutige Datum haben, ohne dass ich Aktualisierungen am System vornehme? Warum zeigt das Protokoll "Unbeaufsichtigtes Update" keine spezifischen Aktivitäten für diesen Tag an?
2018-03-14 07:47:38,124 INFO Initial blacklisted packages:
2018-03-14 07:47:38,135 INFO Starting unattended upgrades script
2018-03-14 07:47:38,135 INFO Allowed origins are: ['o=LinuxMint,a=qiana-security', 'o=LinuxMintESM,a=qiana']
2018-03-14 07:47:51,767 INFO No packages found that can be upgraded unattended and no pending auto-removals
Dies ist die Fußzeile für die nc
Manpage:
BSD March 14, 2018 BSD
Das ist unter Linux Mint 17 (qiana), basierend auf Ubuntu 14.04 (vertrauenswürdig) mit groff 1.22.2 und man-db 2.6.7.1.
BEARBEITEN
Angeforderte Befehlsausgaben:
man -aw nc
/usr/share/man/man1/nc_openbsd.1.gz
ls -ld $(man -aw nc)
-rw-r--r-- 1 root root 5.7K Dec 4 2012 /usr/share/man/man1/nc_openbsd.1.gz
Welches ist komisch ...
dpkg -S $(man -aw nc)
?netcat-openbsd: /usr/share/man/man1/nc_openbsd.1.gz
type -a man
man is /usr/bin/man
zgrep docdate $(man -aw nc)
.Dd $Mdocdate: February 7 2012 $
HINZUGEFÜGTER FUSS
strace -f man nc 2>&1 | grep -e '^BSD' -e '"/.*nc'
ychaouche#ychaouche-PC 14:31:15 ~ $ strace -f man nc 2>&1 | grep -e '^BSD' -e '"/.*nc' execve("/usr/bin/man", ["man", "nc"], [/* 87 vars */]) = 0 lstat("/usr/share/man/man1/nc.1.gz", {st_mode=S_IFLNK|0777, st_size=25, ...}) = 0 lstat("/usr/share/man/man1/nc.1.gz", {st_mode=S_IFLNK|0777, st_size=25, ...}) = 0 readlink("/usr/share/man/man1/nc.1.gz", "/etc/alternatives/nc.1.gz", 4095) = 25 lstat("/etc/alternatives/nc.1.gz", {st_mode=S_IFLNK|0777, st_size=35, ...}) = 0 readlink("/etc/alternatives/nc.1.gz", "/usr/share/man/man1/nc_openbsd.1"..., 4095) = 35 lstat("/usr/share/man/man1/nc_openbsd.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 stat("/usr/share/man/man1/nc_openbsd.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 stat("/usr/share/man/man1/nc_openbsd.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 open("/usr/share/man/man1/nc_openbsd.1.gz", O_RDONLY) = 3 access("/usr/share/man/man1/nc.1.gz", R_OK) = 0 lstat("/usr/share/man/man1/nc.1.gz", {st_mode=S_IFLNK|0777, st_size=25, ...}) = 0 lstat("/usr/share/man/man1/nc.1.gz", {st_mode=S_IFLNK|0777, st_size=25, ...}) = 0 readlink("/usr/share/man/man1/nc.1.gz", "/etc/alternatives/nc.1.gz", 4095) = 25 lstat("/etc/alternatives/nc.1.gz", {st_mode=S_IFLNK|0777, st_size=35, ...}) = 0 readlink("/etc/alternatives/nc.1.gz", "/usr/share/man/man1/nc_openbsd.1"..., 4095) = 35 lstat("/usr/share/man/man1/nc_openbsd.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 stat("/usr/share/man/man1/nc_openbsd.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 stat("/usr/share/man/man1/nc_openbsd.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 open("/usr/share/man/man1/nc_openbsd.1.gz", O_RDONLY) = 3 stat("/usr/share/man/man1/nc.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 stat("/usr/share/man/cat1/nc.1.gz", 0x7fffa49c0940) = -1 ENOENT (No such file or directory) stat("/usr/share/man/man1/nc_openbsd.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 open("/usr/share/man/man1/nc_openbsd.1.gz", O_RDONLY) = 3 [pid 3878] stat("/usr/share/man/man1/nc_openbsd.1.gz", {st_mode=S_IFREG|0644, st_size=5756, ...}) = 0 [pid 3878] access("/usr/share/man/man1/nc_openbsd.1.gz", R_OK <unfinished ...> BSD March 20, 2018 BSD
strace -f man nc 2>&1 | grep -vwe -1 | grep -o '"/[^"]*"' | sort -u | grep -v /dev/ | xargs sh -c 'zgrep "March 14" "$@"' sh 2> /dev/null
no output
Es scheint, dass das Datum nicht fest codiert ist. Könnte ein Makro sein, das das heutige Datum generiert.
env | grep -e ROFF -e MAN -e GRO
SESSION_MANAGER=local/ychaouche-PC:@/tmp/.ICE-unix/2915,unix/ychaouche-PC:/tmp/.ICE-unix/2915 MANDATORY_PATH=/usr/share/gconf/default.mandatory.path
env -i man nc
zeigt das heutige Datum (20. März 2018)zcat /usr/share/man/man1/nc_openbsd.1.gz | nroff -mandoc | grep BSD
ychaouche#ychaouche-PC 06:59:53 ~ $ zcat /usr/share/man/man1/nc_openbsd.1.gz | nroff -mandoc | grep BSD NC(1) BSD General Commands Manual NC(1) BSD March 20, 2018 BSD ychaouche#ychaouche-PC 07:01:41 ~ $
strace -f man nc 2>&1 | grep -vwe -1 | grep -o '"/[^"]*tmac/[^"]*"' | sort -u | xargs ls -lrtd
ychaouche#ychaouche-PC 17:26:08 /usr/share/man/man1 $ unalias ls ychaouche#ychaouche-PC 17:26:12 /usr/share/man/man1 $ unalias xargs ychaouche#ychaouche-PC 17:26:14 /usr/share/man/man1 $ unalias grep ychaouche#ychaouche-PC 17:26:16 /usr/share/man/man1 $ strace -f man nc 2>&1 | grep -vwe -1 | grep -o '"/[^"]*tmac/[^"]*"' | sort -u | xargs ls -lrtd -rw-r--r-- 1 root root 4065 Jan 22 2014 /usr/share/groff/1.22.2/tmac/papersize.tmac -rw-r--r-- 1 root root 1860 Jan 22 2014 /usr/share/groff/1.22.2/tmac/andoc.tmac -rw-r--r-- 1 root root 71 Jan 22 2014 /usr/share/groff/1.22.2/tmac/unicode.tmac -rw-r--r-- 1 root root 1552 Jan 22 2014 /usr/share/groff/1.22.2/tmac/tty.tmac -rw-r--r-- 1 root root 5183 Jan 22 2014 /usr/share/groff/1.22.2/tmac/tty-char.tmac -rw-r--r-- 1 root root 1145 Jan 22 2014 /usr/share/groff/1.22.2/tmac/troffrc-end -rw-r--r-- 1 root root 1387 Jan 22 2014 /usr/share/groff/1.22.2/tmac/troffrc -rw-r--r-- 1 root root 4729 Jan 22 2014 /usr/share/groff/1.22.2/tmac/pspic.tmac -rw-r--r-- 1 root root 22042 Jan 22 2014 /usr/share/groff/1.22.2/tmac/mdoc/doc-syms -rw-r--r-- 1 root root 4048 Jan 22 2014 /usr/share/groff/1.22.2/tmac/mdoc/doc-nroff -rw-r--r-- 1 root root 29284 Jan 22 2014 /usr/share/groff/1.22.2/tmac/mdoc/doc-common -rw-r--r-- 1 root root 2250 Jan 22 2014 /usr/share/groff/1.22.2/tmac/latin1.tmac -rw-r--r-- 1 root root 27860 Jan 22 2014 /usr/share/groff/1.22.2/tmac/hyphen.us -rw-r--r-- 1 root root 15678 Jan 22 2014 /usr/share/groff/1.22.2/tmac/hyphenex.us -rw-r--r-- 1 root root 1362 Jan 22 2014 /usr/share/groff/1.22.2/tmac/fallbacks.tmac -rw-r--r-- 1 root root 73807 Jan 22 2014 /usr/share/groff/1.22.2/tmac/doc.tmac -rw-r--r-- 1 root root 537 Jan 22 2014 /usr/share/groff/1.22.2/tmac/composite.tmac -rw-r--r-- 1 root root 704 Jan 22 2014 /usr/share/groff/site-tmac/mdoc.local ychaouche#ychaouche-PC 17:26:18 /usr/share/man/man1 $
type -a man
Ausgabe würde helfen.
-0
und zusammen --delimiter='\n'
wenig Sinn machen (einer setzt den Begrenzer auf NUL, der andere auf LF)