**DO NOT USE!** This tag is slated for deletion See this meta discussion: http://meta.superuser.com/q/8402/107240. Questions about the OS, such as Red Hat Enterprise Linux, should use [rhel] or the like. Red Hat is the developer, the company itself.

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I am not able to go to the graphical mode in linux redhat 7

I am not able access the graphical mode directly in redhat 7 as every time is as i every time it boot directly into terminal and for GUI mode, had to start it with startx command. so could you help ...
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2answers
170 views

Create bootable RedHat iso from folder

I'd like to install RedHat 6.4 (32bits) on a VM. The problem is that I don't have the iso file. Instead, I have access to a folder (standard RedHat folder with subfolders like images, isolinux, etc.) ...
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0answers
43 views

Extending swap in Redhat linux: insufficient space error

Currently the swap memory of Red hat server is 2GB. I want to extend it to at least 8GB. I've tried several option and server got crashed. Luckily I got another server where I'm trying to extend the ...
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0answers
154 views

Install docker engine on red hat

I'm getting these errors on docker installation. i have this linux distr: Linux version 2.6.32-573.7.1.el6.x86_64 (mockbuild@x86-031.build.eng.bos.redhat.com) (gcc version 4.4.7 20120313 (Red Hat ...
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1answer
27 views

Red Hat 7 terminal does not open in cwd

I just got upgraded to Red Hat 7 and am getting used to the changes. One thing I immediately noticed was that when I press Ctrl-Shift-T to open a new terminal tab, it defaults to / rather than the ...
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1answer
517 views

Redhat disable CPU throttling

How can I disable CPU throttling? I need this done in order to properly install atlas. I have checked alot of similar questions on google as well as here on superuser and didn't find a solution. ...
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0answers
15 views

Redirecting using a timer

I need to redirect multiple webpages after a 60 second time lap, I built the webpage on wix. And it's for a physical user interface on a machine. For example: after a customer chose his wanted ...
1
vote
1answer
115 views

Red Hat versus Ubuntu comparison

I am being asked to use RHEL Red Hat instead of Ubuntu. Are the basic commands the same? I know the licensing is different, but are the package mangers/repositories the same? That is will sudo ...
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0answers
168 views

Red Hat live USB creation

I am trying to install Red Hat OS on my laptop. I tried to create live USB disk from .iso file in Ubuntu 14.10 by using Startup Disk Creator, but I am not able to select any other .iso file than ...
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0answers
52 views

Modern Desktop Environment for RHEL 6

I'm currently forced to work with a machine running Red Hat Enterprise Linux 6. Since I'm usually working with the latest Ubuntu version and a corresponding modern desktop environment, I was quite ...
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0answers
69 views

Identify log file for SMTP that would indicate email sending errors

Some of our applications are sending emails via the local SMTP servers. If this local SMTP server was unable to deliver an email, we need to make sure an error is logged. Perform the necessary ...
0
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1answer
504 views

What is the command to check server time is sync with ntp in RHEL 7?

What is the equivalent command in RHEL 7 for ntpstat? # ntpstat synchronised to NTP server (ntp server ip) at stratum 5 time correct to within 102 ms polling server every 512 s
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1answer
53 views

How do I add a user to the wheel group in Redhat even if the user does not exist?

In SUSE the command groupmod -A "username" wheel will add any user, even if they don't exist, to the wheel group. In Redhat the -A argument does not exist. and other tools such as groupmems will not ...
1
vote
1answer
131 views

Remote desktop connection from windows to AWS ubuntu via AWS redhat

I would like from my windows to access my ubuntu in AWS VPC. Currently, I can do it via SSH. I open putty, connect to my Redhat, and from this server, I can start another ssh to connect to my ubuntu. ...
1
vote
1answer
130 views

Something similar to inotifywait, without being able to install inotifywait

I wanted to continuously re-build and test projects, but just discovered my school's RHEL distribution doesn't come with inotify or inotifywait. Are there any alternatives I could use, which would ...
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0answers
74 views

How do I debug the “defunct” process causing it's parent to freeze?

I have program (in red hat) which freezes 1 out of 5 times during its run. Now when I see the ps -a or top while it is hung, it shows its status as “defunct.” I want to understand the reason why it’s ...
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2answers
187 views

Unable to run yum command

I'm unable to run yum command on my Linux machine. I'm getting the following errors: dispsim:~$ yum Failed to set locale, defaulting to C Loading "rhnplugin" plugin Loading "security" plugin error: ...
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1answer
211 views

Keyboard layout in Terminal of Red Hat Linux changes automatically

I have an unique problem in Terminal of Red Hat Linux WS 6.6. After some of period of period (Don't know exactly when..) keyboard layout (and not language) changes from German to English ONLY in ...
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41 views

installed the wrong version of JAVA and need to remove and install correct one

I accidentally installed OpenJDK on Red Hat Enterprise Linux 5 instead of Oracle Java Development Kit on Red Hat Enterprise Linux 5. When I try to yum install Oracle Java Development Kit on Red Hat ...
0
votes
1answer
133 views

What is the curl equivalent of wget -qO (wget -q -O)?

I need to run the following command in Red Hat Linux: wget -q -O http://somepage/somefile.cgi| bash But I don't have wget installed. I could install it, but I want to know how to do this with curl. ...
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0answers
17 views

Anaconda post installation messages

I am printing some log messages post installation through configuration file kfs.cfg %post --nochroot echo "XYZ" I do not see the message on terminal. Could you please let me know where this ...
1
vote
1answer
64 views

Httpd start on access on port 80, how to stop it?

I have a Red Hat Enterprise Linux 6.5 with httpd, and each time I am accessing to the port 80 the service starts ! I would like to stop it without uninstalling apache, so far I tried : service httpd ...
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0answers
32 views

Red Hat Linux Enterprise 5.3

I am accessing a Red Hat Linux box with bash 3.2.25 via Dynacomm DCSeries 8. When pressing Control-C at the command line, the extended ASCII code 162 is displayed. (This character is also displayed ...
0
votes
1answer
29 views

is it necessary to create swap partition while installing RHEL?

I'm a newbie to RHEL.I've installed RHEL 7 using VMware .but,during the installation ,it asked me to create Swap partition and i created it worth 2GB. please brief me the reasons.what if the swap ...
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0answers
182 views

Creating a Centos 7 iso with kickstart

I wish to create an iso file containing Centos 7 x64 for unattended/kickstart installations. For Centos 6, it worked like a charm. But for Centos 7, i am not able to create a bootable iso image. This ...
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1answer
655 views

Centos7 can't connect ot Internet but IP & ssh from local works

[if this is too long you can read from the bottom] Hello previously i have this Centos7 and it worked fine with the internet connection with static IP. The problem started when i installed GUI, ...
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2answers
201 views

date. hwclock keep showing wrongly everytime after reboot

Edited question to better reflect situation. (My hwclock and date is not showing correctly) I am on +GMT 8 and i have set my hwclock to localtimezone by doing the following rm /etc/adjtime ...
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0answers
24 views

Linux CLI colors wrong output

I have a few different linux systems and some of them the color looks ok and right. Other ones the colors are darker and bold. I have checked my putty settings and output from dircolors and they ...
0
votes
1answer
25 views

alias disables colour sustainably in bash

When I do tree -N I get nice coloured output. When I then alias tree="tree -N" tree output is black & white. When I then unalias tree tree -N output is still black & white! GNU ...
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0answers
39 views

Red Hat Linux Cron Daemon Time Error

I have a legacy system that is running Red Hat Linux 5.4 and the cron daemon will not start. It stopped suddenly, I verified the CMOS time and the system time are correct. I've tried resyncing with ...
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0answers
67 views

Changing I/O scheduler for SSD

I have many CentOS systems, some of them have traditional hard disks, some SSD, and some mix of them. I would like to change scheduler for SSD to deadline. So at runtime I can simply scan check ...
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0answers
364 views

Shell Commands not working : REDHAT

I added some service to the startup script and then after reboot , i got this message- 24 package(s) needed for security, out of 52 available Run "sudo yum update" to apply all updates. -bash: id: ...
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0answers
84 views

Change Default Sender Email Address in RedHat 6.5

In nagios system we configured email system for postfix service, I did changes as shown below: Added the following line in the entry /etc/main.cf smtp_generic_maps = hash:/etc/postfix/generic And ...
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0answers
250 views

FFMpeg keeps hanging/crashing and causing memory allocation issues on Production RHEL Server

I'm working on adding video conversion to a Ruby on Rails (Ruby 2.1.5 Rails 4.1.5) app that I'm working on. I'm utilizing the Streamio-FFMpeg gem within the app so that I can run the necessary ...
0
votes
1answer
49 views

Meaning of parameters in sudoers file in RedHat

HI can you tell me what is the meaning of each and every parameter meaning of this line of sudoers file in RedHat machine? steve CSNETS = (operator) /usr/local/op_commands/ I know first ...
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0answers
177 views

boot.log created with permissions 644 instead of 600

My rsyslog.conf file has this line in it. #### GLOBAL DIRECTIVES #### $FileCreateMode 0600 Yet after every reboot the file permissions of /var/log/boot.log are still changed to 644. Every other ...
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0answers
114 views

How do I enable rsh in Oracle Linux 7?

I have two systems, a Solaris and an Oracle Linux. I can rsh from OL to Solaris but not from Solaris to OL. I can also ssh from both machines. I was reading this and I tried to create an rsh file in ...
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2answers
1k views

Crontab command cannot be executed. Error PAM configurations

Here's the command that I would like to execute but it seems not to work. [mdubois@veloce ~]$ crontab -l Autorisation refusée You (mdubois) are not allowed to access to (crontab) because of pam ...
1
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1answer
62 views

How to save two IPS in single network card

I am using centos 6.6 and going to configure single network card with two IP address. My configuration look like this /etc/sysconfig/network-scripts ifcfg-eth0 DEVICE="eth0" BOOTPROTO="dhcp" ...
0
votes
1answer
208 views

Linux Redhat account claims locked even after unlocking

The local linux account won't allow the user to login even after unlocking it. The following command provides the following output: [userBar@host]$ sudo usermod -U userFoo [sudo] password for ...
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0answers
42 views

What is the default login for Red Hat Enterprise 7.1 KVM guest?

I cannot find this in any Red Hat documentation, but before I call for tech support perhaps someone here knows the answer. Having just installed an evaluation image for RH 7.1, I have my guest VM to ...
0
votes
1answer
194 views

Understanding fdisk -l output and calculating storage

I have basic understanding of disk. (Please correct me if i am wrong) I understand on 1 platter, there are 2 heads, 1 on top, and 1 on bottom. Both side of the platter is able to provide storage ? On ...
0
votes
1answer
43 views

CentOS / RedHat DHCP working, static is not

I have installed CentOS 7 minimal install without GUI when I setup network configuration with Webmin web interface or manually editing files with VI it does not work. When I use e.g. "yum search ...
0
votes
1answer
35 views

List package maintainer on Fedora?

I need to contact the package maintainers for Crypto++ to inform them of a commit to fix a CVE. Under Debian and Ubuntu, I can apt-cache show libcrypto++ | grep Maintainer to get current and past ...
0
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1answer
131 views

devices inside /dev - are their naming persistent by default?

Can i check if devices like sda , sdb naming in /dev/ are persistent by default or there are some udev rules in place to create persistent naming for them ? Does udev itself create device naming ...
2
votes
1answer
323 views

udev symbolic links - where is /dev/sda pointing to

It is said that udev create symbolic links identifying the actual device and /dev/disk/by-uuid is an example. [root@centos1 by-uuid]# pwd /dev/disk/by-uuid [root@centos1 by-uuid]# ls ...
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2answers
51 views

udev - am i using it, where do i see it?

It is mentioned that udev present devices in /dev for devices that are presented to the kernel and it is use to create persistent naming. I have having 2 harddisk /dev/sda /dev/sdb. How does ...
7
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3answers
2k views

Is sendmail a smtp server? Is there any difference between MTA and mail server?

I am new to mail and do not exactly know how it works. I have seen administrators use sendmail to send out email. Is sendmail a smtp server or is it a client that need to relies on smtp server to ...
0
votes
1answer
24 views

why do i keep getting the same $SHELL even i am on a different shell already

[oracle@SJOAM ~]$ echo $SHELL /bin/bash [oracle@SJOAM ~]$ sh sh-4.1$ echo $SHELL /bin/bash sh-4.1$ csh [oracle@SJOAM ~]$ echo $SHELL /bin/bash Why am i always in bash !? but the prompt are already ...
1
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1answer
80 views

using rpm -i in Linux as a normal user

I'm trying to run rpm -i to install an rpm but it fails. I must always use root to do the installation. why ? [alankoh@sjoam2 Downloads]$ rpm -i sqldeveloper-4.0.3.16.84-1.noarch.rpm error: ...