3
votes
4answers
2k views

Generate a key (number?) based on part of the machine's hardware components

I'm wondering what is the best way to manually generate a hardware key based on certain components of the machine. Here's the thing: I want only certain type of machines to be able to communicate ...
2
votes
0answers
391 views

Does epoll give available bytes to read or write, and threshold feature?

kqueue gives available bytes to send or receive if file descriptior (such as socket) gets signal. and, kqueue gives threshold feature, for example, it does not signal until sufficient bytes are ...
1
vote
1answer
213 views

AltGr key combinations through Qtnx

I started using Qtnx, and it works great. I have a problem accessing some keyboard characters though. I am using a french keyboard (azerty-like), and every character is mapped correctly with qtnx, ...
6
votes
3answers
5k views

How to combine two grep statements and display their results together?

Suppose I do grep "MyVariable = False" FormA.frm ... result1 grep "MyVariable = True" FormA.frm ... result2 How to write the grep command so that I can say something like grep ...
4
votes
1answer
2k views

Replace variable read from a text file (so they can be interpreted)

I tried several stuff with not luck so maybe one of you experts can help me (I hope!). I want to store in a text file some select statement that contain variables like a date: $ cat res.txt select ...
1
vote
1answer
860 views

snmp/snmptrap support of ipv6

I have IPv6 only (not dual stack) system I wondering how to - send snmptrap from this system? - configure snmpd to be able to access it? I mean, is snmp is ready to use in IPv6 only environment?
2
votes
3answers
2k views

Does “226 Transfer complete” guarantee the consistency between local and remote files when using ftp?

I have some automated scripts which perform FTP uploads among other things. I'm wondering what level of error checking I should conduct once these uploads have finished executing. Could anything go ...
1
vote
1answer
557 views

Script using CURL to add information to site every month

I am very new at bash, so forgive me for the novice question. Here is my curl call: curl -d 'username=cdaniels&wallclock=391324502' 'https://www-dev.***.***.edu/clusterusage/rest/update.html'; ...
2
votes
0answers
923 views

on puppy linux, how to manage power settings

I'm new to using Puppy Linux, and I'm not able to find a way to manage power settings. The laptop stops working everytime I close and re-open the lid so I want to disable that function from doing ...
1
vote
2answers
5k views

How to search all subdirectories and their subdirectories for the occurence of a word using grep? [duplicate]

Possible Duplicate: Searching for string in files Suppose I have a directory called Home and it is my current directory. And in this home directory I have many other directories ...
-1
votes
2answers
449 views

Centos Crontab not responding

I was learning and experimenting with crontab today. The default editor was just too difficult for me to figure out which caused me to remove my crontab by running crontab -r. Now, when I run ...
1
vote
2answers
587 views

NAND flash memory wear & virtual memory page swap

For a linux kernel with virtual memory and disk storage, pages are swapped back and forth into swap area. But embedded systems generally use NAND flash instead of disk. A NAND flash has a limited ...
1
vote
3answers
191 views

how to forbid a command without a permission

I intended to delete all the backup files in a directory, so I was going to type rm *~ in the terminal. Unfortunately, I hit the Enter before hitting the tilde and unhappy things happened. Although, ...
2
votes
2answers
270 views

Creating one-time cgroup

I would like to be able to create a one-time temporary group in hierarchy. For example: #!/bin/sh run_with_csubgroup /sys/fs/cgroup/group/subgroup/ Which creates group say ...
2
votes
2answers
463 views

using watch with ssh

I have a script: export TERM=xterm watch -t -d -n 1 'netstat -veeantpo | grep 43597 when we run this script though ssh, it does not determine the monitor resolution. so lines are wrapped although ...
2
votes
1answer
510 views

readline: unix-word-rubout, but backwards, is it possible?

I'm trying to set up my .inputrc to perform a backwards unix-word-rubout but I'm currently failing at doing so. I have M-w mapped in my .inputrc. this does not work: "\eu": universal-argument "\ew": ...
3
votes
2answers
1k views

Removing supend and hibernate privileges

On OpenSUSE 12.1 x86_64, Gnome 3.2 . I want to remove the suspend and hibernate options from the Gnome (Shell) menu as suspend makes no sense IMO for a desktop hibernate has a slight tendency to ...
2
votes
1answer
185 views

Set a callback for when a certain process is spawned

The script I'm writing launches process A, which after an uncertain amount of time, launches a child process B. I need the script to execute a command C which depends on process B. But B might not be ...
10
votes
1answer
9k views

Replace using VIM, reuse part of the search pattern

I am working with VIm and trying to set up a search and replace command to do some replacements where I can re-use the regular expression that is part of my search string. A simple example would be a ...
6
votes
3answers
8k views

How to insert a line into text document right before line containing some text in bash?

I have a variable say $strToInsert I have a file file.html I wonder how to find last appearence of </head> and insert a new line before line with it and fill it with $strToInsert contents? ...
2
votes
1answer
156 views

using logrorate with a complex logging directory

An application has a log directory, in which a alot of log output is created. The file structure in this log directory looks something like this: localhost:/var/log/myapp # ls appClient22334.a ...
1
vote
2answers
4k views

BackTrack 5 gui won't load after Installation

I Have installed BackTrack 5. It works fine on a live bootable USB, but once I installed a gui it is not loading. Using the command shell, it works fine, but when I type startx in root login, a black ...
3
votes
1answer
2k views

Why does sftp hide the log from stdout?

I have a script a.sh, which has an sftp command: echo "Starting to sftp..." sftp xxx@xxx.xxx.xxx.xx << END_SCRIPT ls mput *.csv.gz bye END_SCRIPT echo "Sftp successfully." If I run it ...
4
votes
2answers
261 views

Why 2 linux machine behave differently with command of the same syntax?

I am using 2 machine , which is both Red Hat Enterprise Linux AS release 3 (Taroon Update 2) ( I check it in /etc/*-release ). I checked they are using the same default shell by ps -p $$, which is ...
1
vote
3answers
520 views

Accessing bash [internal] brace expansion iteration number/variable

Question: Is it possible to access which number of a bash iteration is currently being processed? Psuedo-Command mv {1..5}.something.{1..5} $x1.$x2.something Note: This is a logical ...
6
votes
1answer
21k views

Installing openjdk-7-jdk does not update java (which is still version 1.6)

I am having issues updating Java. I am running Ubuntu 11.10. I can execute sudo apt-get install openjdk-7-jdk and it completes successfully. javac -version is 1.7, however java -version is 1.6. This ...
8
votes
3answers
23k views

How do I identify which Linux distro is running? [duplicate]

We have some new hardware in our office which runs its own customized Linux OS. How do I go about figuring which distro it's based on?
6
votes
3answers
5k views

Attach multiple times to a single screen session

I've been using screen -dRaA -S x to open up a single session between different workstations as I move about. Handy. Is it possible to connect multiple times to a single session, though, without ...
2
votes
1answer
539 views

root can only login with bash restricted mode

I was implementing a series of recommendations to 'harden' my linux server, involving lots and lots of changes. Linux is CentOS 6.2, kernel 2.6.32-220.*. I'm currently using tty2..tty5 (no X/GUI etc) ...
3
votes
3answers
808 views

Why does installing python-minimal package also grab the python package on Debian?

From running: apt-cache depends python2.6-minimal | grep Depends and apt-cache depends python2.6 | grep Depends it looks like python2.6 depends on python2.6-minimal and a lot more. However, ...
0
votes
2answers
123 views

Testing Scripts

If I have a script called teiid.sh set to run daily by a cron job. The scripts purpose is to initialize the startup of teiid. How would I make a call to test to see the if teiid.sh is working ...
3
votes
1answer
757 views

Are bsdutils, coreutils, and busybox all necessary in a Debian install?

I first installed Debian with a netinst CD without networking, then edited /etc/apt/sources.list to point to the main repository, then ran dhclient eth0 to set up networking. Then I installed less. ...
2
votes
0answers
191 views

Disk filename corruption

Using QNX unix filesystem. The files once written with good file names in a good directory and partition get corrupted in their filenames. Some of the files remain in good shape in the same ...
0
votes
1answer
85 views

Looking for resources: like C doc for reading files and their attributes? (On Linux)

Looking for resources: like C doc (something like JavaDoc for C on Linux would be cool) for reading files and their attributes? I'm working on recursively reading in files. I can get a list of files ...
1
vote
3answers
658 views

How to re-adjust content while resizing gnome-terminal?

Some times when I am compiling a script the parameters are so long that they cover many lines in the terminal. When I resize the terminal in order to read more clearly, the content does not ...
18
votes
5answers
15k views

Linux Mint - Gnome Shell with dual monitor switch main screen

I have a Lenovo Thinkpad T420 with Linux Mint 12 and gnome-shell on it. Its a Intel HD 3000 Graphics card in there. When I'm at home, I have another Screen plugged in (19" 4:3) and everything works ...
4
votes
3answers
6k views

Linux Mint 12 two finger scrolling

i can't get two finger scrolling to work for anything on Linux mint 12 64bit.... hp dv7 laptop. the hardware definitely supports it as it works just fine on my windows partition. following the ...
0
votes
1answer
87 views

Install new most recent python package in ubuntu?

I could really do with installing matplotlib 1.1.0 on my ubunutu 11.10 system. The current ubuntu package is at 1.0.1, how do I use the new one?
12
votes
4answers
2k views

In Debian based systems, how do we purge configuration files of packages that have already been uninstalled?

To be more specific, I would like to do the equivalent of adding the --purge flag to the following command sudo apt-get autoremove --purge [package name] to packages that are no longer on the ...
1
vote
2answers
562 views

Change default title bar icon

How do I set the default title bar icon for X11 applications? The xterm on my machine is displaying an icon with a red x instead of the normal application-default icon. Changing themes in gnome ...
8
votes
2answers
760 views

How do I add network or user source connection data to history entries?

I would like to modify the history settings for all users on the systems that I manage. I would like it to contain the information from the connecting terminal like from who sysadmin:/ # who sysadmin ...
1
vote
6answers
498 views

Print word that doesn't contain character

My file is in the following format: this!,is!,another!,test,yes! this!,is!,another!,column,yes! no,not!,another!,column My output should be: test column no It shouldn't contain the '!' ...
1
vote
4answers
12k views

Kill all process of users in Ubuntu?

How to kill all process of one user? When I make ps aux I obtain a list of process with several users, and I want to kill all process of user name1 for example! What's a command to do that in Ubuntu? ...
14
votes
1answer
17k views

Need explanation on Resident Set Size/Virtual Size

I found that pidstat would be a good tool to monitor processes. I want to calculate the average memory usage of a particular process. Here is an example output: 02:34:36 PM PID minflt/s ...
3
votes
1answer
1k views

boot_archive file in solaris

Does anyone know what is that boot_archive file. It is located under /platform/sun4v/ /platform/sun4v> du -sh * | sort -rn 342M boot_archive **** 190M failsafe 106K lib 71K bootlst 12M ...
0
votes
3answers
284 views

Is there a faster alternative to pkg-config?

Our build system uses pkg-config to build the software, but the linking can take very long (sometimes up to 20 minutes). We identified pkg-config as the guilty tool. So, is there a faster alternative ...
1
vote
1answer
404 views

Setting up a minimal apt-get environment

I would like to set up a minimal environment with apt-get then selectively install packages one at a time. My understanding is that this is basically what the Debian installer does. Is this ...
5
votes
2answers
266 views

Any other distro offer like Ubuntu Software Centre?

I want to know does any other linux disto offer anything close to Ubuntu Software Centre? Some of the features I like about it is A) Sandboxing B) Ability to search any of the libs/apps with ...
1
vote
2answers
1k views

Fast and Small C++ https proxy

I'm looking for a small, fast, and reliable https proxy that I can extend to do the following: Look for https handshake requests. Run a regular expression against the host name being requested. If ...
4
votes
1answer
134 views

Get process list with logical intersection of selectors?

The Linux ps command allows multiple selectors, such as user and command name, but always returns the logical OR of those selectors (more than I want). Does anyone know of a method or tool already ...

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