Unix and Linux Stack Exchange
Unix and Linux Stack Exchange

Questions tagged [dump]

Raw data, typically a section of main memory outputted to a file after the crash of a program or of the kernel itself. Questions relating to debugging and analysis of dump files.

54 questions
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How to dump memory image from linux system?

I know to dump memory images in Windows. (eg-dumpit) But I don't know how to dump memory images in Linux. I want to get memory images in Linux and from Linux to Linux with ssh connection or something. How can I get in Linux?
bakie
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Moving /boot and MBR to a new drive

I have a CentOS 6 server with two hard drives in it. My old 3TB drive has been giving me some issues so I'm moving things over to a new drive. Because my / and /home partition are managed by a LVM it was easy to migrate those to the new drive. …
Cloudkiller
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Dump network traffic of single application (strace-like)

I'm looking for a way to dump pcap of network data generated by an application, in a simmilar way strace dumps syscalls, etc. eg: net-strace somecommand -args somecommand would do something over the network, and net-strace would save a pcap dump of…
gesti
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What is the difference between the od, hd, hexdump and xxd commands?

What is the difference between the od, hd, hexdump and xxd commands ? They are all commands for dumping files and they can all dump it in various formats such as hexadecimal, octal or binary. Why creating different programs ?
Nicryc
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A way for saving running state of a program

I have a program that will perform a lengthy calculation which may take several days to be completed. Is there a way to save the program's running state; so I will be able to turn off the computer and run the program from a saved state. Or if the…
Minimus Heximus
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Are there any ways or tools to dump the memory cache and buffer?

I want to check out what files are loaded in buffer. Just so it's clear, the buffers & cache I'm referring to are what show up when you run the free -m command: $ free -m total used free shared buffers cached Mem:…
jofox
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How to compress a mysql dump using 7z via a pipe?

I've been attempting to compress my mysqldump output via 7z using the pipe operator (I have seen this question, but its answer uses xz not 7z). This is what I have tried so far: mysqldump -u root -p Linux_Wiki | 7z > backup.sql.7z and: mysqldump…
Josh Pinto
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Deleted my ssh keys

I'm on a Mac (OSX). I've accidentally deleted my ssh keys, but I haven't restarted my computer yet so I'm still able to access servers with my key. I guess the ssh-agent has some form of it in memory? Is there any way to retrieve the key from the…
James
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What causes \r's to be inserted before \n's when retrieving a binary file over ssh, and how do I circumvent it?

I have inherited a Ubuntu 14.04 production server which needs to be upgraded to 20.04, and I would like a sandboxed version to experiment with first, hence I want to dump and restore the filesystems over the network from either a MacOS or another…
Thorbjørn Ravn Andersen
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What is the structure of Libvirt Qemu VM dump/save files?

I need to do some exploration of Qemu-KVM virtual machines physical memory (particularly I need to check the fact of the physical memory intersection). In order to do that I'm trying to save VM's state with a virsh dump or virsh save command. The…
Vitaly Isaev
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od emulation for directories

I was wondering why od(1) used to work in UNIX but doesn't work in GNU/Linux. There is a nice answer on serverfault. The next question is, are you aware of any tools that can emulate od behavior to support dumping directory data in GNU/Linux?
sakisk
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ssh dynamic port forwarding and tcpdump shows cleartext

I'm trying to encrypt my web traffic using SSH dynamic port forwarding in case I happen to be in moot places such as internet cafes, hotels and so on. On my laptop I installed an SSH server and executed: ssh -C -D 1080 myuser@localost I then…
Thomas Ukenagashi
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tshark dump only when string is matched

I'm working on a web capture script where I only want to dump the traffic if the HTML body or URL contains a string defined in a .txt file. Here is my tshark command which dumps src ip dest url (HTTP host) which works like a charm. tshark -i eth1…
jemik
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What is Unix for the OpenVMS DUMP command?

In OpenVMS the DUMP command: Displays the contents of a file, a directory, a disk volume, a magnetic tape volume, or a CD-ROM volume in decimal, hexadecimal, octal format, ASCII, or formatted data structures. This is frequently used when a…
CW Holeman II
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Memory dump on Ubuntu 18.04 failed on too big /proc/kcore/

There are two great articles about how to aquire memory on Linux using linpmem: SANS holdmybeersecurity Trying the approach from holdmybeersecurity I ran into the following issue, which seems to be a more general problem: wget…
gies0r
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