/l3/users/bas/2011-03/linux2.unix.bas/user :1 :2 :3
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Журнал лабораторных работ

Содержание

Журнал

Вторник (03/29/11)

/dev/pts/6
11:03:26
$ls /tmp/D2/dir
FILE
11:03:31
$ls -l /tmp/D2/dir
total 0
?--------- ? ? ? ?            ? FILE
11:03:51
$cat /tmp/D2/dir/FILE 
cat: /tmp/D2/dir/FILE: Permission denied
/dev/pts/6
11:04:37
$ls -l /tmp/D2/dir
total 0
?--------- ? ? ? ?            ? FILE
?--------- ? ? ? ?            ? FILE1
?--------- ? ? ? ?            ? FILE2
?--------- ? ? ? ?            ? FILE3
?--------- ? ? ? ?            ? FILE4
11:04:39
$ls -li /tmp/D2/dir
total 0
??--------- ? ? ? ?            ? FILE
??--------- ? ? ? ?            ? FILE1
??--------- ? ? ? ?            ? FILE2
??--------- ? ? ? ?            ? FILE3
??--------- ? ? ? ?            ? FILE4
/dev/pts/6
11:05:29
$ls -l /tmp/D2/dir 
ls: /tmp/D2/dir: Permission denied
11:05:33
$ls -l /tmp/D2/dir/FILE1
-rw-r--r-- 1 root root 7 Mar 29 15:05 /tmp/D2/dir/FILE1
11:05:37
$cat /tmp/D2/dir/FILE1
secret
11:08:18
$touch /tmp/d










11:09:11




$mkdir /tmp/D












11:09:16




$ls -ld /tmp/D /tmp/d


-rw-rw-r-- 1 user user    0 Mar 29 15:09 /tmp/d
drwxrwxr-x 2 user user 4096 Mar 29 15:09 /tmp/D











11:09:21




$grep umask /etc/bashrc


        umask 002
        umask 022











11:12:26




$pstr





pstree      pstree.x11  pstruct











11:12:26




$pstree | less










11:15:32




$umask 077












11:16:45




$touch /tmp/U1












11:16:48




$ls -l /tmp/U1


-rw------- 1 user user 0 Mar 29 15:16 /tmp/U1









прошло 10 минут




/dev/pts/6
11:27:22




$touch /tmp/FFF












11:27:25




$chown root /tmp/FFF





chown: changing ownership of `/tmp/FFF': Operation not permitted











11:27:32




$chgrp audio /tmp/FFF












11:27:38




$chown :lp /tmp/FFF





chown: changing group of `/tmp/FFF': Operation not permitted











11:27:51




$chgrp lp /tmp/FFF





chgrp: changing group of `/tmp/FFF': Operation not permitted











11:28:00




$ls -l /tmp/FFF


-rw-rw-r-- 1 user audio 0 Mar 29 15:27 /tmp/FFF











11:28:07




$id


uid=500(user) gid=500(user) groups=63(audio),500(user)











11:28:23




$chgrp user /tmp/FFF












11:28:45




$ls -l /tmp/FFF


-rw-rw-r-- 1 user user 0 Mar 29 15:27 /tmp/FFF











11:28:47




$chown :audio /tmp/FFF












11:29:00




$newgrp audio





Password:
Sorry.











11:29:53




$id


uid=500(user) gid=500(user) groups=63(audio),500(user)











11:30:17




$ls -l /etc/passwd


-rw-r--r-- 1 root root 1636 Mar 29 13:20 /etc/passwd









прошло 59 минут




12:29:57




$hello world!





bash: hello: command not found











12:30:06




$# hello world!















12:30:15




$echo hello world!


hello world!











12:30:31




$# echo hello world! > file1












12:31:25




$echo hello world! > file1





bash: file1: Permission denied











12:31:34




$cd /tmp












12:31:42




$echo hello world! > file1












12:31:43




$less file1













12:31:55




$fg


hello world!
~
~
~
~
~
~
~
~
~
...
~
~
~
~
~
~
~
~
~
~











12:31:59




$less file1













12:32:04




$jobs


[1]+  Stopped                 less file1











12:32:07




$fg


hello world!
~
~
~
~
~
~
~
~
~
...
~
~
~
~
~
~
~
~
~
~











12:36:44




$mkdir /tmp/disk












12:36:55




$cp /usr/share/doc/bash-3.2/


article.ms     bashdb/        builtins.ps    INTRO          rbash.0        startup-files/
article.ps     bash.html      CHANGES        loadables/     rbash.ps
article.txt    bash.ps        COMPAT         misc/          rose94.ps
bash.0         bashref.html   complete/      NEWS           scripts/
bashbug.0      bashref.ps     FAQ            NOTES          scripts.noah/
bashbug.ps     builtins.0     functions/     POSIX          scripts.v2/











12:38:37




$set -o vi












12:46:14




$set -o


allexport       off
braceexpand     on
emacs           off
errexit         off
errtrace        off
functrace       off
hashall         on
histexpand      on
history         on
ignoreeof       off
...
notify          off
nounset         off
onecmd          off
physical        off
pipefail        off
posix           off
privileged      off
verbose         off
vi              on
xtrace          off











12:46:52




$set -o emacs












12:47:09




$history


    1  ls
    2  exit
    3  pwd
    4  mkdir2
    5  mkdir 2
    6  less typescript
    7  less typescript
    8  less typescript
    9  less typescript
   10  less typescript
...
  168  less file1
  169  jobs
  170  fg
  171  #sdf gdflgjgkl dfrg sdf dfhgk dlfkg dfg sdf gsdfkg dsflg
  172  mkdir /tmp/disk
  173  #cp /usr/share/doc/bash-3.2/CHANGES  /tmp/disk
  174  set -o vi
  175  set -o
  176  set -o emacs
  177  history











12:48:03




$history 10


  169  jobs
  170  fg
  171  #sdf gdflgjgkl dfrg sdf dfhgk dlfkg dfg sdf gsdfkg dsflg
  172  mkdir /tmp/disk
  173  #cp /usr/share/doc/bash-3.2/CHANGES  /tmp/disk
  174  set -o vi
  175  set -o
  176  set -o emacs
  177  history
  178  history 10











12:48:10




$ls -l ~/.bash_history


-rw------- 1 user user 1351 Mar 29 15:24 /home/user/.bash_history











12:48:29




$!176


set -o emacs











12:49:34




$!em


bash: !em: event not found











12:50:11




$!emacs


bash: !emacs: event not found











12:50:16




$!set


set -o emacs











12:50:22




$!j


jobs











12:50:57




$which passwd


/usr/bin/passwd











12:54:27




$ldd `!!`


ldd `which passwd`
        libuser.so.1 => /usr/lib64/libuser.so.1 (0x00000037ece00000)
        libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00000037fe400000)
        libgobject-2.0.so.0 => /lib64/libgobject-2.0.so.0 (0x00000037eee00000)
        libgmodule-2.0.so.0 => /lib64/libgmodule-2.0.so.0 (0x00000037efa00000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00000037ed200000)
        libglib-2.0.so.0 => /lib64/libglib-2.0.so.0 (0x00000037ee200000)
        libpopt.so.0 => /usr/lib64/libpopt.so.0 (0x00000037f7400000)
        libpam_misc.so.0 => /lib64/libpam_misc.so.0 (0x00000037ec600000)
        libaudit.so.0 => /lib64/libaudit.so.0 (0x00000037f4c00000)
        libselinux.so.1 => /lib64/libselinux.so.1 (0x00000037ec200000)
        libc.so.6 => /lib64/libc.so.6 (0x00000037eca00000)
        libpam.so.0 => /lib64/libpam.so.0 (0x00000037f8800000)
        librt.so.1 => /lib64/librt.so.1 (0x00000037ede00000)
        /lib64/ld-linux-x86-64.so.2 (0x00000037eba00000)
        libsepol.so.1 => /lib64/libsepol.so.1 (0x00000037ebe00000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00000037ed600000)











12:57:57




$touch /tmp/{1,2,3,4}.txt












13:01:49




$find /tmp -name \*.txt





find: /tmp/mc-root: Permission denied
/tmp/2.txt
find: /tmp/gconfd-root: Permission denied
find: /tmp/keyring-VQSPZ4: Permission denied
find: /tmp/ssh-NwJjpD2893: Permission denied
find: /tmp/D2/dir: Permission denied
/tmp/4.txt
find: /tmp/ssh-AfKIzR7722: Permission denied
/tmp/1.txt
find: /tmp/virtual-root.bUQIYE: Permission denied
find: /tmp/orbit-root: Permission denied
/tmp/3.txt
find: /tmp/lost+found: Permission denied











13:02:03




$find /tmp -name \*.txt 2> /dev/null





/tmp/2.txt
/tmp/4.txt
/tmp/1.txt
/tmp/3.txt











13:02:07




$mkdir /tmp/txt












13:02:19




$find /tmp -name \*.txt 2> /dev/null





/tmp/2.txt
/tmp/4.txt
/tmp/1.txt
/tmp/3.txt











13:02:20




$cp `!!` /tmp/txt


cp `find /tmp -name \*.txt 2> /dev/null` /tmp/txt











13:02:29




$ls /tmp/txt


1.txt  2.txt  3.txt  4.txt











13:02:33




$vim super-puper-hyper-script


--- /dev/null	2011-03-29 10:45:08.189688728 +0600
+++ super-puper-hyper-script	2011-03-29 17:05:52.000000000 +0600
@@ -0,0 +1 @@
+echo hello









13:06:14




$./super-puper-hyper-script


hello











13:06:18




$[user@linux2:tmp]$ vim super-puper-hyper-script





bash: [user@linux2:tmp]$: command not found











13:06:41




$find . -name \*.txt





find: ./mc-root: Permission denied
./2.txt
find: ./gconfd-root: Permission denied
find: ./keyring-VQSPZ4: Permission denied
find: ./ssh-NwJjpD2893: Permission denied
find: ./D2/dir: Permission denied
./4.txt
./txt/2.txt
./txt/4.txt
./txt/1.txt
./txt/3.txt
find: ./ssh-AfKIzR7722: Permission denied
./1.txt
find: ./virtual-root.bUQIYE: Permission denied
find: ./orbit-root: Permission denied
./3.txt
find: ./lost+found: Permission denied











13:06:51




$find . -name \*.txt 2> /dev/null


./2.txt
./4.txt
./txt/2.txt
./txt/4.txt
./txt/1.txt
./txt/3.txt
./1.txt
./3.txt











13:07:59




$ls -l `find . -name \*.txt 2> /dev/null`


-rw-rw-r-- 1 user user 0 Mar 29 17:07 ./1.txt
-rw-rw-r-- 1 user user 0 Mar 29 17:07 ./2.txt
-rw-rw-r-- 1 user user 0 Mar 29 17:07 ./3.txt
-rw-rw-r-- 1 user user 0 Mar 29 17:07 ./4.txt
-rw-rw-r-- 1 user user 0 Mar 29 17:07 ./txt/1.txt
-rw-rw-r-- 1 user user 0 Mar 29 17:07 ./txt/2.txt
-rw-rw-r-- 1 user user 0 Mar 29 17:07 ./txt/3.txt
-rw-rw-r-- 1 user user 0 Mar 29 17:07 ./txt/4.txt











13:08:06




$rm `find . -name \*.txt 2> /dev/null`












13:08:46




$echo `find . -name \*.txt 2> /dev/null`












13:09:15




$history -c















13:10:38




$ls -l ~/.bash_logout


-rw-r--r-- 1 user user 33 Jan 22  2009 /home/user/.bash_logout











13:12:00




$echo $BASH





$BASH           $BASH_ARGV      $BASH_LINENO    $BASH_SUBSHELL  $BASH_VERSION
$BASH_ARGC      $BASH_COMMAND   $BASH_SOURCE    $BASH_VERSINFO











13:12:00




$history -h





bash: history: -h: invalid option
history: usage: history [-c] [-d offset] [n] or history -awrn [filename] or history -ps arg [arg...]











13:13:48




$man bash










13:15:33




$man













13:15:33




$. /etc/bash_completion












13:17:09




$man













13:17:09




$man bash













13:17:09




$ssh-keyscan 192.168.15.{1..5} >> ~/.ssh/known_hosts





bash: /home/user/.ssh/known_hosts: No such file or directory











13:25:27




$ssh 192.168.15.1


The authenticity of host '192.168.15.1 (192.168.15.1)' can't be established.
RSA key fingerprint is e3:0e:09:ae:33:7d:81:a1:0f:24:09:ec:67:47:9a:3f.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.15.1' (RSA) to the list of known hosts.
user@192.168.15.1's password:











13:25:38




$ping


::1                      localhost                localhost6.localdomain6
192.168.15.1             localhost6               localhost.localdomain











13:26:05




$ssh 192.168.15.3





The authenticity of host '192.168.15.3 (192.168.15.3)' can't be established.
RSA key fingerprint is f4:5c:ee:e9:ef:b7:bd:94:2a:1a:de:fd:ad:43:a7:f7.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.15.3' (RSA) to the list of known hosts.
user@192.168.15.3's password:











13:26:07




$ssh 192.168.15.4


The authenticity of host '192.168.15.4 (192.168.15.4)' can't be established.
RSA key fingerprint is 19:4c:6c:24:e0:65:29:18:56:ba:a7:2b:05:df:e8:26.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.15.4' (RSA) to the list of known hosts.
user@192.168.15.4's password:











13:26:10




$ssh-





ssh-add      ssh-agent    ssh-copy-id  ssh-keygen   ssh-keyscan











13:26:10




$ping 192.168.15.





192.168.15.1  192.168.15.2  192.168.15.3  192.168.15.4











13:26:10




$man bas













13:26:10




$rpm -q


Display all 748 possibilities? (y or n)











13:31:04




$vim /home/user/.bashrc










13:32:09




$~


# /etc/bashrc
# System wide functions and aliases
# Environment stuff goes in /etc/profile
# By default, we want this to get set.
# Even for non-interactive, non-login shells.
if [ $UID -gt 99 ] && [ "`id -gn`" = "`id -un`" ]; then
        umask 002
else
        umask 022
fi
...
                . $i
            else
                . $i >/dev/null 2>&1
            fi
        fi
    done
        unset i