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

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5
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2answers
688 views

Is it possible to create a directory and file inside /proc/sys?

I am running CentOS 6.2 and I need to create a subdirectory named "crypto" inside /proc/sys. Inside /proc/sys/crypto, I need to create a file named test which contains the value "1". I have tried ...
1
vote
1answer
3k views

DNS Issues on RHEL 6

I'm experiencing some DNS issues on a new RHEL 6 virtual machine. Ping is working fine to an IP, but the machine is unable to resolve any names. I've tried adding Google's DNS servers (8.8.8.8 and ...
4
votes
3answers
425 views

Is there is tool similar to ShiftIt on OS X?

I'm looking for a keyboard controlled window sizing utility similar to ShiftIt on Mac OS X: https://github.com/fikovnik/ShiftIt
0
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0answers
855 views

How to install TortoiseHG on RHEL 5.3 from source?

I have been trying to install TortoiseHG with the yum command on my RedHat system and have been struggling. I thought perhaps I should install it from the source. I used the instructions here and ...
2
votes
2answers
3k views

Resolve missing package dependencies when trying to install octave

I am trying to install the octave software package on a RHEL 6 Workstation. I have installed the epel-release 6.5 package to enable the EPEL package repository. When I try to install the octave using ...
2
votes
0answers
473 views

“Remote function call interrupts” (CAL in /proc interrupts). What is it?

I'm running a test program which generates a large number of threads and asynchronous I/O. I'm seeing very high counts of these interrupts in /proc/interrupts, the program cannot scale beyond a ...
1
vote
0answers
109 views

How to recover a multiboot configuration after having installed Windows 7?

I've installed Windows 7 and XP on my laptop. After that, I installed RedHat 5. Now the problem is that I'm not able to load my RedHat. What should be done to fix this problem?
15
votes
7answers
4k views

Is there a difference of stability between Linux distros?

I've using Debian since 2010 for some home purposes and it has been stable. Is Debian still a good option if I need a server for heavy network, cpu, disk and memory usage? Last month I listened to ...
2
votes
5answers
5k views

Why isn't Red Hat Enterprise Linux Desktop free?

Why isn't Red Hat Enterprise Linux Desktop free? Isn't it a Linux OS? If it is, so why is not free? http://www.redhat.com/products/enterprise-linux/desktop/
4
votes
2answers
21k views

How to configure SSL in apache?

I have installed apache in RHEL 6. Everything is working fine. What all changes and configurations should be done to use https://localhost:443/. If I change the "Listen 80" to 443 it is throwing an ...
1
vote
1answer
2k views

How to enable dual booting option at boot screen?

I have two hard drives, 160GB and 500GB. On the 160GB I have installed RHEL 6 and on the 500GB, Windows 7. When I start, the hard drive which is set as primary is booting directly. I have set the ...
7
votes
3answers
5k views

Getting the password expire time

Let me preface this with: I do NOT have root access available. I recently got locked out of my account because I did not know the password expiration was getting close, then elapsed. I want to add a ...
1
vote
2answers
909 views

RedHat Linux Space Usage Problem

I recently downloaded something on my Redhat Linux computer, and it told me I was out of space. I checked my disk usage, and it says I've used 100% of my folder, but as you can see I still have almost ...
5
votes
1answer
474 views

Run script when specific users logout

I need to run my application in screen when specific users are logged out and kill the screen when someone from my user list logged in. So I am thinking about bash script, which will be called ...
10
votes
4answers
15k views

can we know the password for the other users if we have root access?

If a person has root access to a particular RHEL machine, will they be able to retrieve the password of the other users?
1
vote
3answers
5k views

How to switch “/” back to writable mode without reboot?

[root@SERVER .ssh]# mount|grep -i " / " /dev/mapper/rootvg-root_lv on / type ext3 (rw) [root@SERVER .ssh]# mount -o remount / mount: block device /dev/rootvg/root_lv is write-protected, mounting ...
6
votes
3answers
40k views

How can we change root password?

If we don't know the root password and don't have root access to the machine, how can we change the root password?
1
vote
2answers
2k views

Can I mount NTFS flash drive on linux

Hi I'm using RHEL 6 an WIN 7. I have a flash drive of 16GB. To copy the files which are above 4GB size I changed it to NTFS(FAT32 is allowing only file size below 4GB). But now I am not able to use in ...
2
votes
2answers
677 views

Can we use the exe files in RedHat 6 as we do in UBUNTU

in Ubuntu we can use .exe file using wine software. Is there any such software in RedHat so that we can use .exe files?
1
vote
0answers
95 views

Some of the users login screen do not display colors

In my lab I have Redhat Enterprise Linux 5 server. Users log in through telnet for C programming Some of the users' login screens display colors, while some other users login screen do not ...
0
votes
1answer
87 views

Finding Stalled or Failed Updates on System

I was wondering if there is a way to grep through systems to find old updates that have stalled or failed. I am using RHEL 6.
1
vote
2answers
4k views

Partitioning for Web Servers

I was curious what some general best practices are in relation to partitioning for a new Linux VM that will be used as a web server? Are there certain guides that should be consulted or followed? ...
1
vote
1answer
181 views

rpm and deb fileformat are blocked by my ISP. How to install software?

I have a very peculiar problem, Just be patient with what I am saying and then see what all suggestion you can give me. I have situation where my ISP has blocked .rpm and .deb files to be downloaded. ...
1
vote
3answers
693 views

How to disable password prompting for automatic updates on Red Hat

Basically, I have the opposite problem of this guy. I would like my updates to be installed in a transparent way : I'm tired of entering my password every time. I'm running on Red Hat (6.2 to be ...
0
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0answers
37 views

How to make unused dependencies clean with yum? [duplicate]

Possible Duplicate: How can I remove Orphan Packages in Fedora? I need something equal gentoo's emerge --depclean so how to make unused dependencies clean with yum?
5
votes
2answers
35k views

Static IPv4 & IPv6 configuration on CentOS 6.2

I try to configure static IPv4 & IPv6 configuration on CentOS 6.2. The configuration below works perfectly : # ifconfig eth0 x.x.x.x/29 # route add defalt gw x.x.x.y # ip addr add dev eth0 ...
1
vote
1answer
117 views

Why are directories created with permissions 2070 and files with 060 in a directory with setgid bit?

I have the following directory: $ ll -d neptune drwxrws---+ 5 beamin psych 4096 Mar 7 16:18 neptune $ getfacl neptune # file: neptune # owner: beamin # group: psych # flags: -s- user::rwx ...
3
votes
1answer
441 views

Can I force notify-send to appear on a different monitor?

I am using notify-send to present occasional information to my users. However, in a two-monitor setup, notify-send always maps the window in the lower-right corner of the right monitor. The users ...
2
votes
1answer
128 views

Why does SELinux allow me to read this file?

I appear to be misunderstanding the security levels/categories within SELinux. I have attempted to configure a file that I have read access to (via DAC), but no read access to via SELinux categories. ...
0
votes
0answers
1k views

Multiple network adapters with Virtualbox guests?

I'm running VBox under Mac OS with multiple Linux guests (Redhat). Everything works fine except I want to test dual NICs in one of my guests. I'm using host-only adapters and would like to simulate ...
1
vote
3answers
1k views

SFTP server on RHEL6 disconnects on ls

I've followed the steps outlined here to create a chrooted sftp environment. Everything works great EXCEPT for the command ls. When I do an ls, with any of the flags, I get disconnected ...
2
votes
1answer
467 views

How to migrate from CentOS to RHEL?

What packages do I need to install to migrate my CentOS 5.7 server to identical version of RHEL. I have RHN subscription but I don't want to create a fresh install and move files.
3
votes
2answers
185 views

How can I make my home Linux most closely resemble the Linux used at my school?

We have to ssh into our school's server to make sure our programming assignments work on the system that will be used to test them by the teacher. It's running RHEL 6.2. When I test my program on my ...
1
vote
1answer
555 views

Problem Installing .ttf with FontConfig, in userdir for user account, running RHEL

I'm trying to install TTF fonts, for a normal user account, on my RHEL5.4 box The steps I followed are : $ cd ~ $ mkdir .fonts $ cd .fonts $ wget -q ...
2
votes
2answers
944 views

200ms latency between TCP send and tcpdump only with large messages

In our REHL server, latency between application send and tcpdump log is always very large for large messages, about 200 milliseconds (see below 697572-488690=208882 microseconds), whereas latency for ...
1
vote
1answer
314 views

Why do I have to stop/restart cups in redhat linux in order to use a custom filter?

A colleague wrote a filter utility for me in ruby that allows me to print barcodes from a textfile. (The filter replaces @{blah} with the proper PCL and a barcode checksum character so that "blah" ...
2
votes
1answer
171 views

How to solve “/usr/bin/ld: cannot -lodbcinst” problem during FreeTDS installation

I have installed unixodbc for Microsoft SQL Server support in Linux. I want to connect PHP on Linux to a MS SQL server. I tried to install FreeTDS opensource , but it gives me following error. ...
3
votes
1answer
8k views

How to get a list of installed external kernel modules?

From the documentation of Linux kernel 3.2 (Documentation/kbuild/modules.txt) === 5. Module Installation Modules which are included in the kernel are installed in the directory: ...
10
votes
1answer
7k views

Unable to delete file, even when running as root

I am in the process of migrating a machine from RHEL 4 to 5. Rather than actually do an upgrade we have created a new VM (both machines are in a cloud) and I am in the process of copying across data ...
9
votes
3answers
6k views

.bash_profile not sourced when running su

I have a user, say user1, which has modifications to its .bash_profile, one of them changing the PATH, e.g.: export PATH=/some/place:$PATH. This change works fine if I log on as user1 or do a su - ...
3
votes
1answer
1k views

Trouble booting CentOS

I switched from an Ubuntu to the CentOS yesterday. But it seems I have messed my installation somehow, since OS will only start correctly if the USB with the installation is plugged in. Long story: ...
4
votes
2answers
31k views

pdksh missing from RHEL 6 and CentOS 6?

The package pdksh does not exist on RHEL 6 or CentOS 6 when I try to install it through yum. So my questions: Why is it no longer available in the default repositories? It is available in version ...
6
votes
2answers
540 views

What happens when Redhat says: “no more RHEL clones!”

I mean that ex.: CentOS, and Scientific-Linux are the "exact copies" of Redhat Linux. If Redhat would say one day: "I don't allow Redhat clones from now on, I will modify the licence", then what would ...
0
votes
3answers
389 views

Prevent init daemon echoing on TTY

Below is an init script which starts/stops a daemon. The daemon is unfortunately printing the parsed packet data (from /home/nuthan/program/server), a socket server written in perl, listening to a ...
2
votes
3answers
10k views

Transparent proxy with squid 3.1 on RHEL 6

We have nearly 50 systems with windows XP and have Linux (RHEL6) for server. Also have squid 3.1 , Samba and Apache for local use. Under proxy, VPN and outlook express does not connected. I heard ...
4
votes
1answer
314 views

Prelink warning in output of rpm -Va

I have run the following as root on a RHEL 4 box to get a list of the modified files: rpm -Va The output includes lines such as: prelink: /tmp/#prelink#.60m2Jq: Recorded 2 dependencies, now seeing ...
1
vote
1answer
230 views

Checking & Installing files in yum

I'm a beginner picking up RHEL... To check if some packages are present , i will type : yum check <packages_name> And then install by typing yum install <packages_name> Is there a ...
2
votes
2answers
20k views

Error Loading Shared Libraries when Installing Redhat Directory Server

While Installing the Red Hat Directory Server on the Red Hat Linux Server 5 (x86_64)i am getting the following error bin/slapd/server/dsktune: error while loading shared libraries: libstdc++.so.5: ...
4
votes
5answers
2k views

How to make a variable symlink ? (or something similar)

How can I make a variable symlink that would point to a different location according to the current user? Is it possible? Should I use something else instead? A mount point? How? Here is the problem ...
1
vote
1answer
4k views

Is there a way to find out if a network outage occurred from logs?

I have a red hat server running an oracle database. I can see in oracles rdbms' alert logs that a network outage of some sort occurred. ORA-16198: Timeout incurred on internal channel during remote ...