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

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How to set IP based on interface name (not MAC) on Centos 6.5

I'm trying to automate the network interface setup that will be used on identical boxes. The boxes have 3 different NICs. Each of the 3 NICs have different MAC prefixes that I can use to differentiate ...
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1answer
12 views

FTP not happening on RHEL 6 Server configured using a Vm Player 11

I am not able to ftp to the server server from a client. I am using my base machine as Ubuntu 14.04 . Below is the ifconfig output:- raghav@raghav-HP-15-Notebook-PC:~$ ifconfig eth0 Link ...
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12 views

yum install http://www.example.com/package.rpm vs. rpm -ivh http://www.example.com/package.rpm

What's the difference between those commands? Are there any advantages to you yum or rpm for the same task? yum install ...
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17 views

How can I confirm download status for yum update on RHEL5/CentOS5?

I have an older server/appliance running CentOS 5.x. When I run updates on it, yum shows something like this: The screen stays like that until all packages are downloaded -- no status or progress ...
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1answer
16 views

Taking a clone of a customized RHEL server hosted in a data center remotely

We are planning to upgrade OS to RHEL 6.6 on all our servers. All our servers are located in a data center. We have to follow a repeated process of installing application stack, securing, hardening ...
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10 views

RHEL: add IPv6 default gateway via interface configuration file

I need to configure a default gateway for IPv6 over the interface configuration files in RHEL (6.6). The File is managed by puppet With IPv4 there is this option GATEWAY=[IPv4 address] I've ...
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1answer
16 views

Building RPM results in nothing generated in RPMS directory

I am building a RPM on RHEL. After following https://fedoraproject.org/wiki/How_to_create_an_RPM_package, I put my front.tar.gz in /rpmbuild/SOURCES, and make the spec file like this: Name: front ...
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8 views

enabling and accessing multiple comports in RHEL 6.6

I am using a motherboard with The Intel Haswell platform I have installed RHEL 6.6 in it the board is having six comports. I am unable to access more the 2 comports. What kind of setting do I need to ...
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1answer
19 views

How can I use different kerberos principals for sudo than for system-auth?

At my organization, we're required to use different kerberos principals when authenticating for sudo than for other types of auth, such as logging in. For instance, my regular (login) principal might ...
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25 views

Jboss startup ownership issue

Facing few issues with jboss startup . After jboss startup , permission of few files got changed because of which we had to manually change the files and start jboss . $ ls -l /etc/init.d/online ...
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121 views

Symbolic link creation failing: change ownership issue

I am facing some issue with creating soft links. Following is the original file. $ ls -l /etc/init.d/jboss -rwxr-xr-x 1 askar admin 4972 Mar 11 2014 /etc/init.d/jboss Link creation is failing with ...
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How to stop outbound ftp from being established. centos/ rhel

What is the method to block a machine from establishing connection to an outside ftp server. Both ftp and sftp. inet, iptables, shutdown service?
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23 views

boost_1_58_0 install fails on Enterprise Linux Server release 5.8

Get error during installation of boost: #./b2 ..failed gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.1.2/release/threading-multi/bzip2.o... ...skipped ...
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1answer
14 views

How to install RHEL source code RPM in non-default directory?

The RHEL source code RPM package is installed in ~/rpmbuild by default. I want use --prefix option to change the installed directory: [root@nan nan]# rpm -ivvh --prefix=/home/nan ...
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2answers
61 views

How to determine where a tarball expanded

I ran the following on Redhat linux: tar zxvf jdk-7u79-linux-x64.tar.gz resulting in: jdk1.7.0_79/ jdk1.7.0_79/LICENSE jdk1.7.0_79/release jdk1.7.0_79/jre/ jdk1.7.0_79/jre/LICENSE ...
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50 views

Problems installing telnet on RHEL 5.8

telnet is not installed on my Linux server. I tried to install it with yum, but got an error: $ yum install telnet telnet-server -y /usr/bin/python: error while loading shared libraries: ...
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37 views

How to update .bashrc with PATH

I have installed a new JRE on my RedHat linux system. lsb_release -i -r Distributor ID: CentOS Release: 6.5 I have updated the symbolic links pointing to the desired Java installation: ls -l ...
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19 views

How to mount cgroups controllers using cgconfig.conf, while systemd running

I am trying to create a basic cgroups setup on a few Fedora 20 servers (using cgconfig and cgred services). The problem is I would like to create a hierarchy with access to several ...
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2answers
90 views

How to permanently disable root-password prompt for recovery mode, RHEL7

Note: I asked a similar quesiton concerning version 6 of these bundles here. Note that 7 uses systemd and may have a different implementation In the rare cases that a RHEL or CentOS 7 system is ...
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1answer
39 views

How to permanently disable root-password prompt for recovery mode, RHEL6

In the rare cases that a RHEL or CentOS 6 system is prevented from booting by (for instance) an improper shutdown, or a forced fsck-check failure on boot, the console will prompt the user for a root ...
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1answer
65 views

XFCE4: Changing workspaces while moving window

One of the features that I heavily use in XFCE is grabbing a window with Alt (Alt + click and drag) and then changing to a different workspace (which I bound to Alt+number). The net effect is moving ...
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2answers
22 views

iscsi vs iscsid services

From ISCSI clients, we execute # systemctl start iscsi. However, i can see there is another service called iscsid. Can anybody explain about iscsi service vs iscsid service in rhel7.?
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1answer
9 views

characteristics of interface type dummy

I've configured an interface 'nonlocal' with type dummy ip link add nonlocal type dummy on that interface are some IPv6 addresses configured. Now an apache can start with some ip based vhosts on ...
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16 views

Incorrect keyboard mappings on RHEL v6.4

Spent a while trying to create keyboard shortcuts in terminal for command history access (up/down arrow keys). Realized after some frustration that this wasn't the issue - some keyboard keys are just ...
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2answers
39 views

Installing Postfix conflicts with MySQL-server package

I had to install MySQL Server community on our server (team lead did not want MariaDB due to support or something). Therefor I removed MariaDB which in turn also removed Postfix. Now I need to ...
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1answer
32 views

What are the default file permissions in CentOS?

What are the default file permissions in CentOS 5, CentOS 6 and CentOS 7? Is there any difference in the default file permissions between these OSs?
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36 views

what is the canonical way to start a daemon in rhel/centos-6 init script?

I found lots of good documentation for ubuntu's start-stop-daemon and there is a man page for a binary daemon. But from what I can tell the canonical way to start a daemon in a rhel/centos script is ...
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32 views

When I execute a .run file as <user> it works fine. If I sudo run it, it cannot detect Java

I am trying to execute a .run file that will install some applications. I'm installing the application in /opt/... When I run it without sudo, the installer runs correctly but cannot write to /opt/. ...
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3answers
70 views

How to uninstall OpenLDAP in RedHat?

I have installed OpenLDAP with yum, but I have accidentally deleted some of the config files. I am not able to recover them. I want to uninstall it. I tried the following command but it ends with an ...
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1answer
33 views

How to Install “remotely” Binary source from another path location

Suppose this I have a Bynary_Package.tar.gz When i unzipped this: zxvf Bynary_Package.tar.gz -C /path/dir/ Now, I move to cd /path/dir/Bynary_Package/ when I list this with ls -Al I have the ...
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21 views

up2date login & patch APIs for RHEL7

I am trying to achieve controlled patching of the RHEL machines in my network, for which I need to get the patch binaries downloaded onto a windows machine. I have already familiazired myself with ...
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101 views

yum.conf and installonlypkgs option

We set up our CentOS 6.x system that we could have a different versions of our software by means of installonlypkgs option in yum.conf. For example <mycoolpackage>-1.0.0-0.el6 and ...
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1answer
30 views

redhat 9 persist default gateway

We changed the IP addresses of our RedHat 9 system that controls a conveyor/sorter system. When originally installed many years ago someone chose 192.0.0.10 as the IP! But for some reason it defaults ...
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1answer
46 views

Add Xfce Group to REHL 6.6

I want to install Xfce on my REHL 6.6 (currently I think it uses Gnome2 and Compiz) but yum grouplist does not provide me any kind of Xfce group after I run # wget ...
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68 views

Kernel version not changing even though the new version is installed

Recently performed software update on a RHEL 6.6 (Santiago). Noticed that kernel version is not updated to latest one that was installed. kernel version before doing software update: [root@server01 ...
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HP laserjet CP1025 printer not working in RHEL 6.0

I have installed HP laserjet CP1025 on my RHEL 6.0 system . Its discoverable but I am not able to take a print from it. There are no errors or warnings displayed. I have installed its driver by ...
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1answer
55 views

Considering Group and User to Install Apache httpd with different Directory - CentOS 6.6

I removed user and group related to apache, (preinstalled with apache from RPM). I'm the process of Install Apache HTTPD from binary Source "tar.gz" Download httpd-2.4.12.tar.gz Extrat tar zxvf ...
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2answers
97 views

How to let the Firewall of RHEL7 the SNMP connection passing?

How to let the Firewall of RHEL7 the SNMP connection passing? When I did this command on the computer: systemctl stop firewalld All the SNMP packet are passing well. When I restarted firewalld ...
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2answers
106 views

Where is the RHEL7 kernel source code installed?

I install the Linux kernel source code RPM: [root@localhost ~]# rpm -ivh kernel-3.10.0-229.el7.src.rpm warning: kernel-3.10.0-229.el7.src.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY ...
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1answer
26 views

Upgrading `popt` requires to upgrade too many packages

I am currently in the process of upgrading syslog-ng using rpm. In the upgrade process, I found out that syslog-ng has a dependency with rpm-libs which have a dependency with popt. The dependency tree ...
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1answer
26 views

Need help running a command based on a file in the directory

I have some scripts setup that I would like a master script to call based on a files appearance in a directory. Basically I have what's show below. Script A uses file a Script B uses file b ...
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1answer
5 views

Getting htpassword for Red Hat

yum install httpd-tools doesn't work for me because of some admin privileges or firewall issues. I also tried some httpd-tools rpm (from this page ...
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1answer
17 views

7za with password not working while extraction

I am creating a password protected file using 7za, command: 7za a /usr/test/loc/file.del.7za /usr/test/loc/file.del -p .... Creating archive /usr/test/loc/file.del.7za Enter password ...
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How do I get new filesystem formats to use in mkfs?

I am currently attempting to run some benchmark tests using different filesystem formats. However, I can only use the ext family, cramfs, and msdos formats with mkfs since those are the only formats ...
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5 views

Advanced-N 6205 wireless module problem in T430 notebooks

After upgrading a RHEL 6.6 (it was already on 6.6) the built-in wifi card couldn't see any wireless networks, the kernel module couldn't load and this was in the /var/log/messages Jul 2 10:21:47 ...
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38 views

Multiple NICs and Gateway CentOS

CentOS 6.6 eth0 IPADDR=10.0.0.100 IPADDR2=10.0.0.101 GATEWAY=10.0.0.250 NETMASK=255.255.0.0 eth1 IPADDR=10.120.0.100 GATEWAY=10.120.0.1 NETMASK=255.255.255.0 Gateway on eth0 has Internet access ...
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22 views

How to update my local repo that i am using to serve local machines?

I have created a local repo with 618 packages and made it available for my local servers.So that they dont fetch updates directly from RHEL repo. Here are some info about my local repo: ...
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30 views

Absolute domain names in /etc/hosts?

I have a RHEL7.0 host which has this standard entry in /etc/hosts/: 127.0.0.1 localhost.localdomain localhost So resolving localhost.localdomain works: $ ping localhost.localdomain PING ...
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1answer
24 views

looking for a way to download a list of packages with yum

We are trying to setup a local repo that contains all the base packages. So to get started we need to download around 3500+ packages and save it in a folder that will be used as a Repo storage. We ...
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Implications creating System Accounts “useradd -r” Linux Fedora/RHEL/CentOS

I want to know what are the implications of create an account using -r option? # useradd -r ... The help says: -r, --system Create a system account. System users will be created with no aging ...