Tree Cmd Is Not Working

I have setup postfix in Oracle Linux VM in virtualbox to test simple email sends that I am sending it to my personal email.

I have configured the following in main.cf file

myhostname = abc.testserver.org
myorigin = $myhostname
inet_interfaces = localhost
#relayhost = localhost.localdomain - I have this commented as of now, but I tried with the localhost.localdomain, IP address and none worked. I also do not have my ISP's server details and I also do not want to use it.

I checked the /var/log/maillog and I see the following

Code:

May  4 17:25:37 oim sendmail[31684]: t44LPbKA031684: from=root, size=72, class=0, nrcpts=1, msgid=<201505042125.t44LPbKA031684@localhost.localdomain>, relay=root@localhost
May  4 17:25:37 oim sendmail[31685]: t44LPbSn031685: from=<root@localhost.localdomain>, size=378, class=0, nrcpts=1, msgid=<201505042125.t44LPbKA031684@localhost.localdomain>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]
May  4 17:25:37 oim sendmail[31684]: t44LPbKA031684: to=abc@abc.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30072, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (t44LPbSn031685 Message accepted for delivery)

I can also see the messages in /var/spool/mqueue/. The telnet to the localhost 25 port also works. Is any of the config settings wrong?

Thanks.

I have installed vsftp to the server , the status is running now , but when use the command "ftp localhost" , it pops the "421 Service not available." , would advise what is wrong ? thanks

bash-3.2# /etc/rc.d/init.d/vsftpd status
vsftpd (pid 580) is running...
bash-3.2# ps -ef |grep vsftpd
root 580 1 0 15:44 ? 00:00:00 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf
root 607 467 0 15:45 pts/0 00:00:00 grep vsftpd
bash-3.2# ftp localhost
Connected to localhost (127.0.0.1).
421 Service not available.

hiiii all

I had installed Windows 7 on /dev/sda1 and /dev/sda2 and then I installed Centos 7.
Since then I cant find Windows entry in the Grub.
And i had tried to use all kind of solution found on the net I still cant see any entry.
I had edited 40_custom script adding:

cat <<EOF
menuentry "windows 7" {
insmod part_msdos
insmod ntfs
set root='hd0,msdos1'
search --no-floppy --fs-uuid --set=root FCDAE998DAE95006
chainloader +1
}
EOF

then this command grub2-mkconfig -o /boot/grub2/grub2.cfg

[root@localhost]# grub2-mkconfig -o /boot/grub2/grub2.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-123.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-123.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-93890f189dec4b309c004fdce969ca5a
Found initrd image: /boot/initramfs-0-rescue-93890f189dec4b309c004fdce969ca5a.img

then this
[root@localhost]# tail -10 /boot/grub2/grub.cfg
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
[root@localhost]#


Still cant find windows in grub
please help me with this guys
thanks

I have install vsftpd and start it , but when when to try it by "ftp localhost" , but not work , would advise what is wrong ? thanks


#ps -ef |grep ftp
Code:

root     29896     1  0 10:53 ?        00:00:00 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf
root     29899 23821  0 10:53 pts/0    00:00:00 grep ftp

# ftp localhost
Code:

Connected to localhost (127.0.0.1).
421 Service not available.

useradd -s /bin/bash -d /home/jaydul -m jaydul
[root@tuhin /]# cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
operator:x:11:0perator:/root:/sbin/nologin
games:x:12:100:games:/usr/games:/sbin/nologin
ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
nobody:x:99:99:Nobody:/:/sbin/nologin
dbus:x:81:81:System message bus:/:/sbin/nologin
sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
jaydul:x:1000:1000::/home/jaydul:/bin/bash
[root@tuhin /]# cat /etc/redhat-release
CentOS Linux release 7.0.1406 (Core)

jaydul:x:1000:1000::/home/jaydul:/bin/bash

Why 1000:1000: Group? it will be by default will be 500:500?
I was any mistake?
jaydul:x:500:500::/home/jaydul:/bin/bash

hi sir.need ur help. a desktop comp is endorsed to me with Linux system. the previous user failed to give the password for localhost root and im not able to login to the system. I really need to backup the files and programs installed and afraid to reboot since our database program is installed in the pc. would really appreciate your help.ty

Centos 6.5

I ran into an interesting problem (on reddit) that I figured I could solve, but I have not been able to. Its simple,.. I added 'exit 0' to /root/.bashrc, and now I am trying to log in via ssh.

Everytime I do, it immediately exits when it runs the .bash_profile, which sources .bashrc, (which is immediate upon 'logging in')

I've tried:

Code:

ssh root@192.168.1.50 -t vim
vim scp://192.168.1.50/.bashrc
vim scp://192.168.1.50/root/.bashrc
ssh root@192.168.1.50 bash --norc
ssh root@192.168.1.50 /bin/bash --norc --noprofile
ssh -T root@192.168.1.50 "mv /root/.bashrc /root/.bashRC"
scp .bashrc root@192.168.1.50:/root/
ssh root@192.168.1.50 /bin/bash --norc --noprofile -vvvvvvvvvv
ssh -vvvvvv root@192.168.1.50 /bin/bash --norc --noprofile
ssh -vvvvvv root@192.168.1.50 /bin/mv /root/.bashrc /root/.bashRC
ssh -t -t root@192.168.1.50 << EOF
mv /root/.bashrc /root/.bashRC
EOF
ssh -t -t root@192.168.1.50 --norc << EOF
echo HELLO > /root/.bashrc
EOF
ssh -tv root@192.168.1.50 rm .bashrc

So,.. I am unable to get back into the system (as root, no other users exist) after adding 'exit 0' to .bashrc

Anyone feel like explaining why all of these failed (aside from saying SSH interactive logins run the .bash_profile/.bashrc files) or, offering a suggestion that works? Seems like if you have the root password, you should be allowed to modify the login process... since... you know... you are root.

Hi all,

When i try to transfer some doc from one server to another, i met this problem.

[root@esjirp62 ~]# scp .bashrc esjirp62new:~/p62
root@esjirp62new's password:
bash: scp: command not found
lost connection
[root@esjirp62 ~]# which scp
/usr/bin/scp

Just in a few minutes ago, i was using scp and now it is not working any more.

Why is this happening?

Hi,

Please view this log below. Can you tell me the reason why I can not ping to server (server hang, or network services down, ...)

Thank you.

Code:

[root@mediaserver ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 5.7 (Tikanga)
[root@mediaserver ~]# uname -a
Linux mediaserver 2.6.18-274.el5 #1 SMP Fri Jul 8 17:36:59 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
[root@mediaserver ~]#

log file: https://onedrive.live.com/redir?resi...int=file%2ctxt

At May 20 10:26:11, I reset server.

Hello,

I am facing an issue with a filesystem (/dev/sda3); I see space used on it (around 365GB) when I am looking at the host with "df -h" command.

Code:

[root@srv_omega /]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3             443G  365G   56G  87% /
tmpfs                  95G   56K   95G   1% /dev/shm
/dev/sda1             484M   39M  421M   9% /boot
/dev/sdb1             3.6T  1.3T  2.2T  36% /hadoop/disk1
/dev/sdc1             3.6T  1.3T  2.2T  37% /hadoop/disk2
/dev/sdd1             3.6T  1.3T  2.2T  36% /hadoop/disk3
/dev/sde1             3.6T  1.3T  2.2T  37% /hadoop/disk4
/dev/sdf1             3.6T  1.3T  2.2T  36% /hadoop/disk5
/dev/sdg1             3.6T  1.3T  2.2T  36% /hadoop/disk6
/dev/sdh1             3.6T  1.3T  2.2T  36% /hadoop/disk7
/dev/sdi1             3.6T  1.3T  2.2T  36% /hadoop/disk8
/dev/sdj1             3.6T  1.3T  2.2T  36% /hadoop/disk9
/dev/sdk1             3.6T  1.3T  2.2T  36% /hadoop/disk10
/dev/sdl1             3.6T  1.2T  2.3T  36% /hadoop/disk11
/dev/sdm1             3.6T  1.3T  2.2T  36% /hadoop/disk12
/dev/sdn1             3.6T  1.3T  2.2T  36% /hadoop/disk13
/dev/sdo1             3.6T  1.3T  2.2T  37% /hadoop/disk14
/dev/sdp1             3.6T  1.1T  2.4T  30% /hadoop/disk15
cm_processes           95G  8.2M   95G   1% /var/run/cloudera-scm-agent/process

I have looked if any hidden file might cause the issue, no joy.

Code:

[root@srv_omega /]# pwd
/
[root@srv_omega /]#  ls -lrtha
total 121K
drwxr-xr-x    2 root root 4.0K Jun 28  2011 srv
drwxr-xr-x    2 root root 4.0K Jun 28  2011 mnt
drwxr-xr-x    2 root root 4.0K Jun 28  2011 media
drwxr-xr-x    2 root root 4.0K Dec 20  2012 cgroup
drwx------    2 root root  16K Jun  2  2014 lost+found
drwxr-xr-x    2 root root 4.0K Jun  2  2014 selinux
-rw-r--r--    1 root root    0 Jun  3  2014 .autorelabel
drwxr-xr-x   18 root root 4.0K Jun  5  2014 hadoop
drwxr-xr-x   21 root root 4.0K Jun  5  2014 var
dr-xr-xr-x    9 root root  12K Jun 20  2014 lib64
dr-xr-xr-x    2 root root  12K Jun 21  2014 sbin
dr-xr-xr-x    2 root root 4.0K Jun 21  2014 bin
dr-xr-xr-x    5 root root 1.0K Jun 22  2014 boot
dr-xr-x---    5 root root 4.0K Jun 22  2014 root
drwxr-xr-x    6 root root 4.0K Jun 22  2014 opt
drwxr-xr-x    3 root root 4.0K Dec 10 19:11 home
dr-xr-xr-x   13 root root 4.0K Dec 12 16:18 lib
dr-xr-xr-x 1140 root root    0 Apr 30 15:11 proc
drwxr-xr-x   13 root root    0 Apr 30 15:11 sys
-rw-r--r--    1 root root    0 Apr 30 15:11 .autofsck
drwxr-xr-x    2 root root    0 Apr 30 15:11 misc
drwxr-xr-x    2 root root    0 Apr 30 15:11 net
drwxr-xr-x   15 root root 4.0K Apr 30 15:12 usr
drwxr-xr-x   19 root root 4.6K Apr 30 15:12 dev
dr-xr-xr-x   27 root root 4.0K Apr 30 15:12 ..
dr-xr-xr-x   27 root root 4.0K Apr 30 15:12 .
drwxr-xr-x  122 root root  12K May  4 03:33 etc
drwxrwxrwt   16 root root 4.0K May  7 06:14 tmp

So I try to find where the space is used with a "du -sh" command

Code:

[root@srv_omega /]# pwd
/
[root@srv_omega /]# du -sh *
7.8M    bin
29M     boot
4.0K    cgroup
280K    dev
26M     etc
19T     hadoop
124K    home
144M    lib
26M     lib64
16K     lost+found
4.0K    media
0       misc
4.0K    mnt
0       net
7.9G    opt
du: cannot access `proc/9170/task/27326/fdinfo/538': No such file or directory
du: cannot access `proc/45119/task/45119/fd/4': No such file or directory
du: cannot access `proc/45119/task/45119/fdinfo/4': No such file or directory
du: cannot access `proc/45119/fd/4': No such file or directory
du: cannot access `proc/45119/fdinfo/4': No such file or directory
du: cannot access `proc/45160': No such file or directory
0       proc
3.8M    root
17M     sbin
4.0K    selinux
4.0K    srv
0       sys
3.9M    tmp
2.6G    usr
16G     var

So as far as I understand, only /hadoop is a suitable suspect (as cumulative size of all the other folders on "/" are well below the 365GB)

Code:

[root@srv_omega hadoop]# cd /
[root@srv_omega /]# cd /hadoop
[root@srv_omega hadoop]# ls -lrtha
total 72K
drwxr-xr-x  2 root root 4.0K Jun  5  2014 disk16
drwxr-xr-x 18 root root 4.0K Jun  5  2014 .
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk1
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk11
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk10
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk13
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk12
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk14
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk2
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk4
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk3
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk6
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk5
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk8
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk7
drwxr-xr-x  4 root root 4.0K Jun 22  2014 disk9
drwxr-xr-x  5 root root 4.0K Nov 19 20:02 disk15
dr-xr-xr-x 27 root root 4.0K Apr 30 15:12 ..

All folders from 1 to 15 are on different filesystems, so the folder disk16 seems to be the only option but there is nothing in it.

Code:

[root@srv_omega hadoop]# cd disk16/
[root@srv_omega disk16]# ls -lrtha
total 8.0K
drwxr-xr-x 18 root root 4.0K Jun  5  2014 ..
drwxr-xr-x  2 root root 4.0K Jun  5  2014 .
[root@srv_omega disk16]#

I just don't get it; no folder seems responsible for the "365Gb"...

Any idea on how I could try to find out where those "365GB" are ?