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Martin Hope
Richard
Asked: 2015-08-13 06:27:23 +0800 CST
  • 1

I am following [here] to install crash dump on Ubuntu 1404:

sudo apt-get install linux-crashdump

However, it throws exception as below:

... unmet dependencies
linux-crashdump  : Depends: kdumptools but it is not going to be installed

PS: I have followed [here] to solve the problem, but it does not find any broken held package...

Update: my platform is Ubuntu 14.04 on Linux 3.16.0-generic.

Update 2: the following is the complete printout

app> sudo apt-get install linux-crashdump kdump-tools makedumpfile libdw1
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libdw1 : Depends: libelf1 (= 0.158-0ubuntu5) but 0.158-0ubuntu5.2 is to be installed
E: Unable to correct problems, you have held broken packages.
apt
Martin Hope
Richard
Asked: 2012-10-16 07:36:54 +0800 CST
  • 7

my ubuntu version is 12.04, and when cat /proc/version, it shows

Linux version 3.2.0-23-generic (buildd@crested) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu4) ) #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012
Linux yuzhe-HP 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Here it shows the os is x86_64. To install oracle jdk over linux, install package comes with two versions x86 and x64. Which should I choose for a x86_64 system?

64-bit
Martin Hope
Richard
Asked: 2012-08-04 04:05:49 +0800 CST
  • 9

I need to ssh to localhost using root account, by ssh root@localhost. When it prompts for passwords, I can not login with all possible passwords. On setting of localhost machine, regular user xxx and root user share the same password (the password that works for sudo -s), but it does not works for ssh root@localhost. So where to look at the password for ssh root@localhost

PS: with the password, I can login to regular account on ssh xxx@localhost.

PPS: to answer further questions on motivation of doing so, localhost is just a computer in a private network and setting up ssh root@localhost is just to relieve some manual management in a prototype system.

ssh
Martin Hope
Richard
Asked: 2012-06-22 05:57:39 +0800 CST
  • 2

I have used the same following commands (in xterm) on two machines of the same ubuntu (11.11-64bit).

grep "jars2deploy" --include=*.xml ./* -r

However, one machine A only search for xml file, as expected, while the other B totally ignored --include switch. I have tried grep --version, which shows grep are of the same version 2.9 as well. My question is how I can config on machine B so the same command searches .xml file.

command-line
Martin Hope
Richard
Asked: 2012-02-27 09:11:25 +0800 CST
  • 12

I have one bash source run.sh as follows,

#!/bin/bash
if [ $# -ne 1 ]; then
    exit
fi
...

when I execute it in two ways, there are different behaviors. The first way is,

source run.sh

It will close the terminal after execution. The second way is,

./run.sh

this will simply finish running the script, and stay on the terminal. I am asking if there is a command for exiting a bash scripts for both source run.sh and ./run.sh execution. I have tried return too, which does not work well under ./run.sh execution.

More generally, I am interested in why this is happening, and what's difference between using "source" and "." for script execution?

scripts bash