Red Hat Enterprise Linux (RHEL) is a commercially supported Linux distribution.

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how to get the standard output from command in variable

when we want to know what is the standard output of the ssh then we do ssh $linux_server "cat /proc/uptime" [[ $? -eq 0 ]] && ssh is ok but how to know the ssh standard output in case of ...
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2answers
50 views

`sudo: command not found' when following a tutorial for Let's Encrypt

I'm following a Godaddy help tutorial in order to install Let's Encrypt certificate for my website. So I connected to my server using ssh via Putty. Typing the command sudo git clone https://github....
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1answer
25 views

Redhat & GUI/GNOME Struggle?

We have in our Company SysAdmin so damm stupied and lazy. Everytime I ask him for a Redhat Virtual Machine(VM),He just deploy a ready template with GUI and lot of package,a lot I think he just install ...
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2answers
30 views

How to install specific mysql 5.6.21 version on redhat?

My requirement is Mysql 5.6.21. I tried to install Mysql but it installed 5.6.31 version. I tried following steps: $ yum repolist all | grep mysql It gives following output: mysql55-community/...
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13 views

Not able to understand the output of FFSB (Filesystem benchmark) ON RAID-6

I'm trying to run FFSB benchmark (https://sourceforge.net/projects/ffsb/) a RAID-6 server and the output is really confusing to evaluate. Distribution - Red Hat Linux kernel version - 2.6.32-504.30....
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2answers
31 views

zipimport.ZipImportError: can't decompress data; zlib not available

On RHEL 6.6, I installed Python 3.5.1 from source. I am trying to install pip3 via get-pip.py, but I get Traceback (most recent call last): File "get-pip.py", line 19177, in <module> ...
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1answer
27 views

Custom Linux log in prompt and system health check

I am looking for an existing tool or direction on creating a custom login terminal and system health-check scripts when booting/logging into my linux machine. Upon opening or closing the laptop much ...
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0answers
16 views

Changing CentOS 7 machines disables terminal access during background task

Based on this other posting, I typed the following command into a CentOS 7 terminal on a devbox that has the gnome GUI, and was able to continue to use the terminal for other commands while the ...
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Horizontal Workspaces in KDE SC 4.14

My College updated from RHEL 6 to RHEL 7, and with it came KDE. I want to have 2 rows and 2 columns for the workspaces, but I can't seem to find the setting. The only option in the tweak tool is to ...
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1answer
35 views

yum is broken because of missing Python module (RHEL 6.4)

When I run $ yum I see: There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: /usr/lib64/libssh2.so.1: symbol EVP_aes_128_ctr, ...
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19 views

Can't see processes of particular users in top

The Linux command top isn't working properly. If I type u, for which user, and then my account xxxxxx, I see all my jobs. If I type 68852563 (consultant account), then I see nothing. OS: Red Hat ...
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1answer
21 views

How to switch console mode to GUI mode on RHEL7?

I load the RHEL 7.2, I forget to select the options before loading OS, after my machine booted through console mode runlevel 3, I installed some dependency package, after reboot I got GUI mode, but ...
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1answer
5 views

gnome-panel switches to one row on RHEL6 when opening mail

Using RHEL6 I set my gnome-panel to 50 pixels big, it sets the windows in tray to two rows. Great. Question: But: when I open a given mail in my mail client, then the gnome-panel switches to one row,...
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1answer
21 views

Docker image creation using RPM

I used the docker file bellow to create a docker image So, my problem is, when I was building it, the below error appeared. please help me solving it.
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1answer
23 views

How to set cups to use all paper trays on a printer?

Our sales application runs on Linux. We have our printers set up in CUPS using the supplied Xerox Global Print Driver. In each printer settings it has a drop down for what paper tray to use, but you ...
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21 views

linux redhat virtual machine is booting issue [closed]

when i reboot my vm that time showing following error init: rcS post-stop process (1139) terminated with status 1
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0answers
17 views

drive geometry error with vfat

I'm curious what this error means: [root@server1 ~]# mkfs -t vfat /dev/example mkfs.fat 3.0.20 (12 Jun 2013) unable to get drive geometry, using default 255/63 I was attempting to make a file ...
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0answers
10 views

How do you install Django when there is a problem with scl?

scl is installed on RedHat 6. The man pages for scl work. I want to install Django. I believe that a prerequisite is to install SCL for Python. $scl -l returns nothing. I believe that this is ...
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34 views

Redhat Client 7.2 Problem [closed]

The machine (a RHEL 7.2 server) doesn't boot and gives this error message: o.ooooo tsc: Fast TSC calibration failed
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9 views

Setup RHEL 7 to PXE boot Ubuntu netboot

I'm looking to learn how to setup a RHEL 7 VM instance to PXE boot Ubuntu (and possibly other distros). The VM will be created by the network team at work. They don't have time or knowledge to setup a ...
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0answers
89 views

Client to Client https in OpenVPN on CentOS 7

In the Centos 7 -hosted OpenVPN defined below, why can't the windows_client defined below https into the centos_vm1_client defined below? The problem seems isolated to the configuration of the ...
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1answer
15 views

Enable SCL python27 so other RPMs can see it

Trying to create an RPM that uses Python 2.7 on a RHEL 6 machine. I'm using SCL to enable Python2.7 and building the RPM with it fine. However, when I try to install that RPM on a different system ...
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0answers
46 views

linux + yum + how to print the yum variables by yum command

I just Wondering if we can print the yum parameters without to view the yum configuration files ( by more or cat or vi ... etc) for example I configured the variable , in /etc/yum.conf ...
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1answer
55 views

OpenVPN Server does not reply to Client ping

An OpenVPN client seems to initialize on a CentOS 7 client virtual machine. However, the response from the server is not clear when the client sends a ping. Specifically, ping 10.8.0.0 from the ...
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28 views

mount --move command fails with error mount point does not exist

trying to rename a mount point in Redhat linux. below command worked in some machine, but in some machine it fails with below msg , in one of the machine it worked after a reboot. but in other ...
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18 views

KVM snapshot slow booting after some time

I'm using Red Hat system and using KVM for virtual machines. Currently I have 8 snapshots in my virtual machine called "Win7", where each snapshot is built based on the snapshot before to fix some ...
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1answer
19 views

Can't remove ttyS0 from /etc/securetty

Running RHEL6.6. Been trying to secure the system, and am having difficulty disabling root logins over the serial connection. My understanding is that I need to comment-out/remove the ttyS0 line, ...
2
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1answer
16 views

Disabling consoleblank on running systems without logging into the console

I have recently added consoleblank=0 to my kernel boot line in order to disable the console screensaver on hosts that are either VMs are are connected to some sort of KVM. This obviously only takes ...
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1answer
56 views

Failed to start PostgreSQL 9.5 with systemctl - SELinux

I've installed PG 9.5 (/usr/pgsql-9.5/) and when I start it manually with postgres -D it has no problems, but if I try to use systemctl I get an error. By looking to journalctl -xen output, I see: /...
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1answer
20 views

How to disable wireless N on Centos/RHEL 7?

On a RHEL7 notebook we have a: 03:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59) card, which we want to use only with "G" mode, "N" should be disabled. How can we do this? ...
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15 views

how to load an LDAP client cert RHEL7 authconfig-tui

I have a RHEL7 machine that needs to be configured as an LDAP client (user/auth, using authconfig-tui). When finishing authconfig-tui, it says, just copy the cert to /etc/openldap/cacerts, which I ...
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Accessing /home fails in gdm PostSession script

I am trying to have a script do some cleanup items when a user logs out of Gnome2 on Redhat. I tried making a script in /etc/gdm/PostSession/Default and it can't access /home. #!/bin/sh ls -l /home &...
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Why is my network unreachable in virtual machine with RHEL 7.2?

I got a 30-Day evaluation of RHEL 7.2. I installed into a VirtualBox machine, and tried to register my subscription: # subscription-manager register Registering to: subscription.rhn.redhat.com:443/...
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1answer
41 views

I installed python 2.7 on RHEL6 server, want to go back to 2.6

I am on RHEL6 and I installed python27 using these commands: sudo sh -c 'wget -qO- http://people.redhat.com/bkabrda/scl_python27.repo >> /etc/yum.repos.d/scl.repo' sudo yum install python27 ...
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1answer
35 views

yum install R dependency issue (RHEL 5.5)

I'm trying to remotely install R on a RHEL 5.5 system but keep getting a dependency issue yum -y install R results in the following Loaded plugins: rhnplugin, security This system is not ...
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24 views

redhat + how to install only the latest kernel from kernel security packages

I am not sure but I found the installonly_limit parameter from yum.conf when we set installonly_limit=1 , Dose this mean to install always the latest kernel ? for example if security packages ...
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13 views

Device name issue in multipathing

I have device name problem with multipathing. I have two servers which has shared storage coming from the SAN. Multipath is configured to manage that, now the problem is with device naming. Let me ...
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0answers
23 views

Cannot add group on RHEL desktop

[root@notebook ~]# groupadd testing groupadd: failure while writing changes to /etc/group [root@notebook ~]# grep testing /var/log/audit/audit.log type=ADD_GROUP msg=audit(1465386369.617:2553): pid=...
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1answer
26 views

rsyslog versus rsyslog.d

I'm currently studying for my Red Hat Certification exam, and I've come across an example in my book dealing with system log architecture. I'm currently working a classroom RHEL7 environment. My ...
0
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1answer
38 views

grub2 + how to print the current index according to grubby --info=ALL

how to verify in linux 7 , what is the current index that have the current kernel version for example I want to know if the kernel - 3.10.0-327.18.2.el7.x86_64 is located in index=0 or index=1 or ...
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2answers
38 views

What's the proper way to use a variable with spaces in part of a shell script command? [duplicate]

How can I include spaces as part of a variable used in an svn command for RHEL bash scripting? Or if there's something else wrong with the following, please advise. The SVN URL variable has no spaces,...
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0answers
54 views

how to capture the latest kernel version from grub.conf

how to capture the latest kernel version from grub.conf ( in case default=0) for example the latest kernel from the file is 2.6.18-409.el5 # all kernel and initrd paths are relative to /...
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1answer
28 views

linux + grub.conf not exist

I just need to check some redhat machine version - 6 and I notice that grub.conf inst exists how this Linux machine know with which kernel to start? ( in case grub.conf not exists ) is it safe to ...
2
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1answer
25 views

Identifiy file system for the device /dev/sdc1

I started an old Virtual Machine in the UAT environment. The output for uname -a is : Linux pawana 2.6.32-431.el6.x86_64 #1 SMP Sun Nov 10 22:19:54 EST 2013 x86_64 x86_64 x86_64 GNU/Linux There 3 ...
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1answer
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How to print the latest kernel version from grub.conf on Linux 7

On Linux 5 and 6 I can print the /etc/grub.conf How to verify the latest kernel version on Linux 7? , like we do on Linux 5 and 6 from grub.conf #boot=/dev/sda default=0 timeout=15 #splashimage=(hd0,...
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1answer
18 views

How to use a ks.cfg file to create a virtual machine.

I'm studying for the RHCSA exam and both practice exams i'm using have asked me to do this. The question is "Use the ks.cfg file provided to create a virtual machine with hostname blah blah and with ...
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1answer
25 views

error while loading shared libraries: libcppunit-1.13.so.0: cannot open shared object file: No such file or directory

I've done everything I thought was needed, but can't get this library to be installed properly. ldconfig -p | grep libcppunit keeps returning the empty string. To install it, I've run (do not ...
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1answer
45 views

Unable to clean ^[(B control characters from log file [duplicate]

I am trying to clean all color control characters from log file. I am able to clean all other control characters except ^[(B . Please help me to clean this control character also. I am using these ...
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0answers
87 views

How to disable the Intel graphics driver on CentOS 7?

I have installed CentOS 7 recently, I found that my GUI is always laggy, specially when playing videos or GIFs. have tried multiple video players and web browsers and they all have the same results ...