কেন কোনও নির্দিষ্ট man
পৃষ্ঠায় (আমার ক্ষেত্রে, nc
কমান্ডের জন্য) সিস্টেমে কোনও আপডেট না করেই আজকের তারিখ থাকবে? এছাড়াও, "অপরিবর্তিত আপডেট" লগ কেন সেই দিনের জন্য কোনও নির্দিষ্ট ক্রিয়াকলাপ দেখায় না?
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
এটি nc
ম্যান পৃষ্ঠার জন্য পাদচরণ :
BSD March 14, 2018 BSD
এটি লিনাক্স মিন্টে 17 (কিয়ানা), উফুন্টু 14.04 (বিশ্বাসযোগ্য) এর সাথে গ্রফ 1.22.২ এবং ম্যান-ডিবি 2.6.7.1 এর উপর ভিত্তি করে।
সম্পাদনা
অনুরোধ কমান্ড আউটপুট:
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
যা অদ্ভুত ...
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 $
সংযুক্ত ফুটার
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
মনে হচ্ছে তারিখটি হার্ডকোড করা হয়নি। আজকের তারিখটি ম্যাক্রো উত্পন্ন করতে পারে।
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
আজকের তারিখ (মার্চ 20 শে 2018) দেখায়zcat /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
আউটপুট সাহায্য করবে।
-0
এবং --delimiter='\n'
একসাথে সামান্য জ্ঞান তৈরি করুন (একটিটি NUL এর সাথে সীমানা নির্ধারণ করে, অন্যটি এলএফ-তে সেট করে)