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trzczy's questions

Martin Hope
trzczy
Asked: 2018-09-20 16:24:57 +0800 CST
  • 0

Eu tenho o Debian Stretch..

Eu pensei que um usuário comum poderia matar o processo root como root. Eu estava usando o comando /bin/kill 10733como o usuário. Não houve nenhuma mensagem de erro. Então, digitei o comando semelhante (sem /bin/prefixo) e a mensagem de erro foi exibida.

Aqui está o histórico de comandos

deployer@deployer:~/blog$ kill 10733
-bash: kill: (10733) - Operation not permitted
deployer@deployer:~/blog$ /bin/kill 10733
deployer@deployer:~/blog$ ps aux|grep 10733
root     10733  0.0  0.6  92360  6404 ?        Ss   19:19   0:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
deployer 10891  0.0  0.2  12732  2236 pts/0    S+   20:10   0:00 grep 10733
deployer@deployer:~/blog$ sudo kill 10733
deployer@deployer:~/blog$ ps aux|grep 10733
deployer 10900  0.0  0.2  12732  2232 pts/0    S+   20:10   0:00 grep 10733
deployer@deployer:~/blog$

Na verdade, eu preferiria tanto o prefixo quanto a mensagem. Como conseguir isso? E por que é assim?

debian command-line
Martin Hope
trzczy
Asked: 2018-09-12 05:24:17 +0800 CST
  • -1

Ao tentar instalar o Certbot no Debian Jessie, eu precisava de backports de acordo com as instruções de instalação do certbot . Falhou. Então eu tentei adicionar backborts ao arquivo sources.list do Debian . Também falhou. Então, como instalar o Certbot em Jessie? Eu também gostaria de saber como adicionar backports.

Aqui estão minhas tentativas:

root@deployer:~# apt-get install certbot
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package certbot
root@deployer:~# apt-get install certbot
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package certbot
root@deployer:~# 
root@deployer:~# cat /etc/*-release|grep VER
VERSION_ID="8"
VERSION="8 (jessie)"
root@deployer:~# echo deb http://ftp.debian.org/debian/dists/jessie-backports/ jessie-backports main > /etc/apt/sources.list
root@deployer:~# cat /etc/apt/sources.list
deb http://ftp.debian.org/debian/dists/jessie-backports/ jessie-backports main
root@deployer:~# apt-get update
Ign http://ftp.debian.org jessie-backports InRelease
Ign http://ftp.debian.org jessie-backports Release.gpg
Ign http://ftp.debian.org jessie-backports Release
Err http://ftp.debian.org jessie-backports/main amd64 Packages
  404  Not Found [IP: 130.89.148.12 80]
Ign http://ftp.debian.org jessie-backports/main Translation-en_US
Ign http://ftp.debian.org jessie-backports/main Translation-en
W: Failed to fetch http://ftp.debian.org/debian/dists/jessie-backports/dists/jessie-backports/main/binary-amd64/Packages  404  Not Found [IP: 130.89.148.12 80]

E: Some index files failed to download. They have been ignored, or old ones used instead.
root@deployer:~# apt-get install certbot
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package certbot
root@deployer:~#
debian apt
Martin Hope
trzczy
Asked: 2018-09-04 04:40:43 +0800 CST
  • 1

Digitei o comando chfn -o umask=002 sousere esperava que sousero usuário criasse pastas com 775permissão, mas ele não o fez. Como fazer para que cada nova pasta criada por um determinado usuário tenha permissão de gravação para o grupo? Aqui está o meu teste:

s@lokal:~$ sudo adduser souser
Adding user `souser' ...
Adding new group `souser' (1002) ...
Adding new user `souser' (1002) with group `souser' ...
The home directory `/home/souser' already exists.  Not copying from `/etc/skel'.
Enter new UNIX password: 
Retype new UNIX password: 
passwd: password updated successfully
Changing the user information for souser
Enter the new value, or press ENTER for the default
  Full Name []: 
  Room Number []: 
  Work Phone []: 
  Home Phone []: 
  Other []: 
Is the information correct? [Y/n] y
s@lokal:~$ sudo usermod -aG sudo souser

s@lokal:~$ su souser
Password: 
souser@lokal:/home/s$ cd
souser@lokal:~$ mkdir test
souser@lokal:~$ ls -ld test/
drwxr-xr-x 2 souser souser 4096 Sep  3 14:23 test/

souser@lokal:~$ chfn -o umask=002
chfn: Permission denied.
souser@lokal:~$ sudo chfn -o umask=002 souser
souser@lokal:~$ mkdir test2
souser@lokal:~$ ls -ld test2
drwxr-xr-x 2 souser souser 4096 Sep  3 14:24 test2
souser@lokal:~$ sudo cat /etc/passwd |grep souser
souser:x:1002:1002:,,,,umask=002:/home/souser:/bin/bash
souser@lokal:~$

Atualização nº 1

Após o relogin é o mesmo:

souser@lokal:~$ mkdir test3
souser@lokal:~$ ls -ld test3
drwxr-xr-x 2 souser souser 4096 Sep  3 14:42 test3
souser@lokal:~$

Atualização nº 2

Isso também não ajudou:

s@lokal:~/Dropbox$ su - souser
Password: 
souser@lokal:~$ mkdir test4
souser@lokal:~$ ls -ld test4
drwxr-xr-x 2 souser souser 4096 Sep  3 14:51 test4
souser@lokal:~$

NOTA: A distro é Debian 9.

linux bash
Martin Hope
trzczy
Asked: 2018-07-02 13:28:10 +0800 CST
  • 0

Eu preparei a configuração do dhcpd no Debian 8 e funcionou com sucesso, mas depois adicionei a ponte e o dhcpd falhou.

ponte:

root@remote:/home/s# brctl show
bridge name bridge id       STP enabled interfaces
br0     8000.00224dad5ddf   no      eth0
                                    eth1
root@remote:/home/s# cat /etc/network/interfaces
auto lo br0
iface lo inet loopback

iface ppp0 inet wvdial
provider orange

iface eth0 inet manual

iface eth1 inet manual

allow-hotplug br0
iface br0 inet static
bridge_ports eth0 eth1
address 192.168.0.1
netmask 255.255.255.0

root@remote:/home/s#

dhcpd:

root@remote:/home/s# systemctl -l status isc-dhcp-server.service
● isc-dhcp-server.service - LSB: DHCP server
   Loaded: loaded (/etc/init.d/isc-dhcp-server)
   Active: failed (Result: exit-code) since Sun 2018-07-01 21:51:43 CEST; 24min ago
  Process: 1037 ExecStart=/etc/init.d/isc-dhcp-server start (code=exited, status=1/FAILURE)

Jul 01 21:51:41 remote dhcpd[1076]: No subnet declaration for eth0 (no IPv4 addresses).
Jul 01 21:51:41 remote dhcpd[1076]: ** Ignoring requests on eth0.  If this is not what
Jul 01 21:51:41 remote dhcpd[1076]: you want, please write a subnet declaration
Jul 01 21:51:41 remote dhcpd[1076]: in your dhcpd.conf file for the network segment
Jul 01 21:51:41 remote dhcpd[1076]: to which interface eth0 is attached. **
Jul 01 21:51:43 remote isc-dhcp-server[1037]: Starting ISC DHCP server: dhcpdcheck syslog for diagnostics. ... failed!
Jul 01 21:51:43 remote isc-dhcp-server[1037]: failed!
Jul 01 21:51:43 remote systemd[1]: isc-dhcp-server.service: control process exited, code=exited status=1
Jul 01 21:51:43 remote systemd[1]: Failed to start LSB: DHCP server.
Jul 01 21:51:43 remote systemd[1]: Unit isc-dhcp-server.service entered failed state.

root@remote:/home/s# cat /etc/dhcp/dhcpd.conf 
ddns-update-style none;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
subnet 192.168.0.0 netmask 255.255.255.0 {
  range 192.168.0.2 192.168.0.6;
  option domain-name-servers 8.8.8.8,8.8.4.4;
  option routers  192.168.0.1;}
root@remote:/home/s#

Como adicionar isso "subnet declaration for eth0"e corrigir o serviço dhcpd?

network-interface ethernet