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36
votes
4answers
12k views

Why do consoles sometimes hang forever when SSH connection breaks?

I've seen this with so many consoles (on Linux, Mac, ...), and with lots of different machines in many different networks. I can never pinpoint the exact reason, why this happens: All you have to do ...
33
votes
6answers
23k views

How do I permanently disable Linux's console screen saver, system-wide?

I've got an Ubuntu server that boots up in text mode. It rarely has a screen or keyboard attached to it, but when I do attach a screen, I usually have to attach a keyboard too, because the darn ...
16
votes
6answers
28k views

KVM Guest installed from console. But how to get to the guest's console?

I'm trying to install a fully virtualized guest (Fedora 14 x86_64) on KVM (RHEL 6), using command-line only (both hypervisor and guest). It goes without errors, and without a tangible result . I'd ...
14
votes
4answers
3k views

How to check if I'm in screen session?

is it somehow possible to check if I'm right now in screen session? I need it to determine if hitting ctrl+d would disconnect me from server or just close current screen. Thanks.
14
votes
10answers
8k views

Tail multiple remote files

Is there a way to remote tail 2 files? I have two servers(a and b) behind a load balancer and I would like to do something like this if possible: tail -f admin@serverA:~/mylogs/log ...
14
votes
1answer
13k views

How to delete .fuse_hidden* files?

I have small Linux server (Debian Squeeze) which runs a Samba server which is configured to share some folders with some windows machines. While trying to delete one of the directories from windows I ...
14
votes
1answer
6k views

What does the @ symbol mean in a file's permission settings?

I'm on MacOSX, I did ln -s on a directory and these are the results: -rwxrwxr-x@ 1 shiki admin 970332 Mar 6 16:38 apc.so -rwxrwxr-x@ 1 shiki admin 653884 Mar 6 16:38 eaccelerator.so ...
13
votes
6answers
2k views

Nested RDP and VMWare and ILO console sessions: keystroke repetition and latency

I'm working on a remote server installation entirely through ILO (but this also applies to IPMI and VMWare console sessions). Due to the software application and environment, my access is restricted ...
12
votes
6answers
2k views

Real benefits of serial console servers (with modern server hardware)?

I'm working in a new environment that makes heavy use of serial console servers for server management. They are augmented with switched PDUs for power management. They are not using the DRAC ...
12
votes
1answer
2k views

Block select on a Linux console?

Is there any Linux console (konsole, gnome-terminal, etc.) that allows selecting text in a block mode, like you can in a Windows cmd.exe window, using Mark and drawing a square?
10
votes
1answer
3k views

Console on ESXi 5

Is there also a console on ESXi 5? The well known method from ESXi 4 for the "hiddenconsole" does not seem to work. (Alt-F1, type "unsupported", enter root password)
8
votes
5answers
2k views

Allow access to Linux Console

Suppose one is running an SSH session into a GNU/Linux box of a client and he asks you to see "what you are doing". How can you allow this other party to see what's going on in your session?
7
votes
2answers
927 views

Reverse bash console text flow

This is a bit of a weird question and I'm not sure that there is any easy answer to it but I am very interested in finding a solution. So when I work on a linux machine via a console I find that I am ...
6
votes
4answers
341 views

How to configure UNIX or Linux for administration via serial connection

How can I configure my UNIX or/and Linux PC with COM port to support serial console connections? I would like to connect my notebook to that PC via a console cable and manage the PC with terminal ...
6
votes
3answers
2k views

How can I scroll back the output in FreeBSD's console without Scroll Lock?

I've installed FreeBSD inside a VM on a laptop. As it turns out, the laptop keyboard has no Scroll Lock key, which is used for scrolling the screen back in FreeBSD's console. How can I scroll back the ...
6
votes
4answers
415 views

What is a a good serial-to-USB adapter?

Serial ports on devices are still used for many things, especially on network devices. However, most modern laptops no longer have serial (aka "COM") ports. So what I'm curious about is: what is a ...
6
votes
1answer
2k views

Linux: Print all messages to primary console *and* secondary console (monitor/KVM)?

I run Linux (Red Hat-based, CentOS, SL, versions 5 & 6) on a variety of Supermicro and other whitebox servers. Some have IPMI, some do not. Some of these systems are attached to a ...
5
votes
8answers
1k views

How to remote control Windows?

Is there a way to remote control a Windows machine as easy as I do with my other Linux pcs through SSH? I'm currently using a FTP server for files but I prefer the way I can manage my other linux ...
5
votes
2answers
405 views

what console command ./ means?

I saw many times console commands like ./redis-server or ./mongo what exactly ./ means?
5
votes
6answers
830 views

Possibilities of connecting to linux box console without network

Having to manage a couple of remote dedicated servers, working with network related stuff can be quite stressful. Is there any possible way I could connect to those boxes (possibly via third box) and ...
5
votes
6answers
5k views

Colour tail of Apache logs

Monitoring apache logs with tail –f tends gets very frustrating for the eyes after a while. Are there any tool/options to colorize the log outputs? Maybe signal FATAL with red, etc...
5
votes
2answers
1k views

Cisco console, USB and RJ45?

I have a new Cisco 3750X switch and I want to connect to it via console. Only.... this switch does not have a DB9 connector on it, its Serial port is RJ45. I have a USB to RJ45 cable, and am on ...
5
votes
4answers
3k views

Prevent the console from clearing the screen?

When booting into Linux, there are sometimes one or two lines that get quickly cleared. I think that some of them don't even appear in dmesg. If nothing else, I want to suppress the clear before the ...
5
votes
5answers
650 views

Unix command to suspend a job while there is console activity?

I want to do a large disk transfer, which slows down responsiveness of my system. What I want is a Unix command that will only run the command after I have been idle at the console for a few minutes. ...
5
votes
6answers
240 views

What is a simple & common command line tool to show network usage on a Linux machine?

I'm looking for a simple command line linux tool that will show me the current network usage, the same way top displays CPU usage. What is the most standard tool (I can't install new things on the ...
5
votes
4answers
4k views

How to enable multiple virtual consoles on linux?

I'm new to linux so I have no clue how to do this (couldn't find it on the web). I'm running a LAMP Virtual Machine and when I press ALT-F2, F3 etc.. to use a Virtual Console I get a blank screen (all ...
5
votes
1answer
741 views

Supermicro + IPMI + FreeBSD: Kernel prints at 1-bps

I am running FreeBSD 8.2-RELEASE. The machine is a Supermicro 5015M with a IPMI 2.0 daughterboard. When I boot this host, the boot process proceeds fine. I see the BIOS, the RAID BIOS, the first and ...
4
votes
7answers
3k views

Is there a folder size tool for linux? (web-based or working on console)

I have a debian server which has a lot of user folders and I would like to have a tool like FolderSize application in Mac, where i can check the filesystem by filetype or foldersize (or whatever ...
4
votes
5answers
22k views

Disable usage of console-kit-daemon in Ubuntu

I administrate several Ubuntu 9.04 servers, and everytime I log in, I get the Landscape utility printout with server stats, etc. I really don't need this and it slows down my logins considerably. ...
4
votes
2answers
4k views

With the Supermicro Embedded BMC, is it possible to connect to Serial Over Lan via SSH?

I have several dozen Supermicro servers which use the Supermicro Embedded BMC. The documentation on that page suggests that I can access the Serial Over LAN (Serial Console) over SSH: SMASH ...
4
votes
4answers
348 views

Linux process management

I started a long running background-process (dd with /dev/urandom) in my ssh console. Later I had to disconnect. When I logged in, again (this time directly, without ssh), the process still seemed to ...
4
votes
3answers
29k views

Setting Java Runtime setting for all users on a client PC

We have a problem with a java application running out of memory. Our (Windows XP) client PCs have JRE 1.6 version 18 installed. I want to increase the -Xmx runtime parameter for the JRE to 512M but I ...
4
votes
2answers
7k views

Where/when does a (Debian) Linux system change the console display mode?

I'm installing Debian Wheezy (7.0rc1) on a box of mine. For reasons I won't go into here, I don't want the framebuffer to be used for the console display during boot (nor afterwards). To avoid this, I ...
4
votes
3answers
5k views

Connecting a USB laptop to a RJ45 serial port

We are about to get our first managed switch at work (Procurve 2520G-24-PoE), and this lowly programmer gets to put on his admin hat and try to configure it. The switch has an RJ45 serial port for ...
4
votes
2answers
1k views

What does “virtual consoles” in the ubuntu installer stand for?

I am installing ubuntu server in a vmware vm. In the expert installer there is this question (i guess this is the same in the debian installer): Please enter a space delimited list of virtual ...
4
votes
2answers
2k views

Powershell screen buffer

i am using Windows Powershell, and just wondered if there is a way to scroll through the screen buffer (like for example in UNIX bash with SHIFT + PgUp / SHIFT + PgDn). I know the there is a "more" ...
4
votes
2answers
2k views

Dumping a Linux console scrollback buffer?

We would like to save the output of a program run on a Linux console which spans many lines. Unfortunately it wasn't logged or run under screen, or any other way that lets us easily capture the ...
3
votes
5answers
7k views

Linux: open serial(COM1) line to manage Switch through console

Cat you help please) I have connected switch to PC with serial cable and i want to manage it. What utility i can use to open serial line and manage switch through console? On windows i used ...
3
votes
4answers
79 views

Rescuing a buggered console

Once in a while, you'll get some output in your console that causes it to go haywire. In some cases, you can't enter text, in others you can enter text but it looks like the Cyrillic alphabet. Is ...
3
votes
2answers
218 views

Can changing the tty improve compilation speed?

When I do large compilations (anywhere, but my question assumes Linux), many messages are often output to the screen. My question is, do these messages slow down the process? And if they do, does ...
3
votes
2answers
1k views

Utility to send a command to multiple terminals?

A while ago when I did a lot more system admining, there was a little utility that would send a command to multiple terminals that I had open. So essentially I could ssh into three different servers, ...
3
votes
2answers
619 views

stdout to gnu screen copy buffer

Is there a command in GNU Screen to direct standard output to the copy buffer I've been doing alot of work with files, it's great to copy and past the filenames I want into commands e.g. ls | grep ...
3
votes
1answer
1k views

glassfish 3.1.2 admin console port 4848 blocked by firewall

I've got a remote server. There is glassfish 3.1.2 running behind apache 2.2. The administration port 4848 is blocked by firewall so that I cannot use http://some_server.com:4848 where some_server is ...
3
votes
3answers
292 views

Linux web console for multiple machine

I'm looking for a web-based tool allowing me to do the following: Have a single web-based UI for multiple servers Services monitoring: for each server I want to see all running daemons and be able ...
3
votes
2answers
70 views

Possible to use a console cable from a Cisco ASA and use it interactively with ESXi?

I'm creating procedures to deploy a Cisco ASA and an ESXi machine to remote locations where no local tech contacts are available. I think it may be a wise idea to connect the console cable from the ...
3
votes
1answer
162 views

Redirect tty out to serial?

Im trying to debug an issue we are having with netbooting a RedHat box. The anaconda installer scribbles useful log data to the second virtual terminal (Ctrl-Alt-F2) but I would like to be able to see ...
3
votes
2answers
2k views

Fedora14 serial console how-to needed

Has anyone ever got a serial console working in fedora 14 ? Is it as simple as adding to grub: serial --unit=0 --speed=38400 terminal --timeout=10 serial console and add to the kernel lines: ...
3
votes
1answer
519 views

Hiding linux kernel messages from console

I have a machine running a custom build of Linux kernel 3.2.12-rt based on Debian Squeeze. I'm getting kernel messages printed to the console. I don't want it to do that. I know why it's doing ...
3
votes
1answer
418 views

persisting esxi /bootbank/boot.cfg across reboots

i have a serial console connected to my esxi 5.5 server. and the configs work fine for the pxe install. however, upon reboot my console no longer works: i believe i need to change the file ...
2
votes
3answers
706 views

Ubuntu Server: Don't see my input in terminal

I have a problem with my Ubuntu server. I start a new remote ssh session (from windows putty or ubuntu client) to my server. After a while (I think it is when I hide the console window), my input is ...