The binary tag has no usage guidance.
3
votes
1answer
27 views
0
votes
2answers
45 views
What can cause my shell to look like this? [duplicate]
I'm currently developing a home automation framework for my apartment. This involves getting JSON over Serial from an Arduino. When the JSON can't be parsed (usually only on startup) I log it as an ...
0
votes
0answers
27 views
Directory became UNIX binary (OS X)
I recently fixed the file permissions of my home directory using System Recovery mode. But after rebooting I found that one directory had become a single unix binary. I have tried everything from ...
11
votes
3answers
555 views
How can I work with binary in bash, to copy bytes verbatim without any conversion?
I am ambitiously trying to translate a c++ code into bash for a myriad of reasons.
This code reads and manipulates a file type specific to my sub-field that is written and structured completely in ...
1
vote
2answers
47 views
What's the POSIX way to read an exact number of bytes from a file?
Just hit this problem, and learned a lot from the chosen answer: Create random data with dd and get "partial read warning". Is the data after the warning now really random?
Unfortunately ...
2
votes
2answers
75 views
Why does “head /bin/ls” reset the terminal
If you do something silly like cat /var/log/wtmp your terminal can get messed up as shown in the screenshot. I know there are a number of ways of fixing this. One of the ways not mentioned on that ...
0
votes
1answer
16 views
Possible problems deleting /tools in LFS
I recently made a Linux From Scratch and now I want to delete the /tools directory. But before rushing through it, I ran
ldd /bin/* | grep '/tools'
Which gave me this
liblzma.so.5 => ...
0
votes
1answer
25 views
Install Java 1.4.2 on recent Amazon Linux [duplicate]
I need Java 1.4.2 on a up-to-date Amazon Linux 2015.09 server. I've tried to install j2sdk-1_4_2_19-linux-ia64-rpm.bin. When I execute this file, I get an error message:
line 442: ...
3
votes
2answers
257 views
Alter certain bytes in many files
I need a large number of damaged .png files in order to test my project. To that end, I need to set all bytes from the 0x054-th to the 0xa00-th to 0.
.png files contain chunks with checksums, I want ...
1
vote
1answer
18 views
Find all files (including libraries) a binary depends on
I'd like to find all files a binary depends on (including libraries, configuration files, basically all files referenced in the binary).
I know, that you can find shared libraries with objdump, ldd, ...
-2
votes
1answer
56 views
how to fix potentially infected binary files? [closed]
when I installed the updates on my computer (Ubuntu 14.04), I typed the password, thinking that it was asked for regular updating , but when I noticed some strange behavior and crash at this moment, I ...
0
votes
1answer
31 views
Convert line of ASCII file to binary packet for NetCat
I have an ASCII file, which looks like this:
36,36,0,1
36,36,0,2
...
What I want to do is to send every row of it as one binary TCP segment's payload with NetCat.
To convert the number from file ...
3
votes
2answers
108 views
Trace a binary stream from a device file
I'm debugging a binary stream that is coming from a device file.
I would like to have the output printed out in real time as hex values.
So far I've used tail -f /dev/ttyAPP2 | hexdump -C but after ...
5
votes
2answers
259 views
Create the same PNG with ImageMagick 2 times: Binaries differ
I create two images that should be identical, but their binaries are different:
$ convert -size 1x1 xc:white out1/w.png
$ sleep 1
$ convert -size 1x1 xc:white out2/w.png
$ diff out1/w.png out2/w.png
...
4
votes
1answer
53 views
Finding out binary's compiling computer name
We have recently in our workplace stumbled upon a really old binary file that originates from unknown old computer. However in order to run this binary we need to get some local resources and ...
2
votes
1answer
37 views
Is there a way to create endless stream with custom character?
I need to create an endless stream of characters like /dev/zero but I need it to spam custom character (like 'a') instead of 0x00. Is there a way to do it?
1
vote
1answer
128 views
Apply SHA256 and Base64 to string in script
I'm trying to apply SHA256 and then Base64 encode a string inside a shell script. Got it working with PHP:
php -r 'echo base64_encode(hash("sha256", "asdasd", false));'. But I'm trying to get rid of ...
0
votes
1answer
52 views
How to recognize binaries installed in `~/bin`? [duplicate]
I am trying to execute some binaries manually installed in a bin directory in my $HOME (normal user).
Files are present in /home/user/bin and have exec permission:
$ ls -la ~/bin/
total 120
...
2
votes
1answer
223 views
How do I repair binaries?
So, basically I was messing up with minix and qemu and I messed up too much.
me@meplepl ~ $ which
bash: /usr/bin/which: cannot execute binary file: Exec format error
me@meplepl ~ $ file ...
3
votes
2answers
30 views
How to set binary installed by package manager as default?
I installed a newer version of tcpdump via MacPorts and would like to make it the default binary.
$ which -a tcpdump
/usr/sbin/tcpdump
/opt/local/sbin/tcpdump
For now I set an alias, but that of ...
0
votes
0answers
16 views
Where exactly is page permissions set in fs/binfmt_elf.c?
As I understand that in linux, the ELF loader (binfmt_elf.c) is the one that loads a particular binary into memory. Usually data will be RW and code segment will be RE. But where exactly in the source ...
1
vote
1answer
58 views
Find longest matching portion with in two binary files
Say I've got two binary files, each roughly 50MB, that may contain a digitally-identical portion. Is there an easy way to compare these two files, find the longest identical portion, and save that to ...
1
vote
2answers
380 views
Extract data between two matched patterns in a binary file
I am trying to extract a jpeg image from a binary text file. I want to extract all data between 0xFF 0xD8 (start of image) and 0xFF 0xD9 (end of image) inclusive. Earlier, I have successfully run the ...
5
votes
3answers
100 views
How does grep decide that a file is binary?
I have a large utf-8 text file which I frequently search with grep. Recently grep began reporting that it was a binary file. I can continue to search it with grep -a, but I was wondering what change ...
0
votes
1answer
102 views
What's the fastest way of writing 1s to a hard disk? [duplicate]
I'm currently writing 1s to a file using the following:
tr '\0' '\377' < /dev/zero > /dev/sdb
But this is a really slow method when I want to fill a 500GB disk. Is there a quicker way?
4
votes
3answers
154 views
Handling NULL characters in shell
Is there a portable way of handling NULL characters in shell?
A typical example would be splitting the output of find ... -print0 with shell (and shell only) either in a pipe or in a command ...
1
vote
2answers
52 views
Viewing Binary not Hex
Debian jess 64
Alright let me start out by saying this maybe a very stupid,uninformed question due to my lack of understanding of binary, but I guess that's what this site is for, questions.
That ...
1
vote
0answers
1k views
How do I create generalized binary tarballs for SageMath?
I would like to create a generalized binary tarball (i.e., a tar-compressed archive that contains an executable shell script for a wide range of different Linux distributions. It must be first ...
0
votes
1answer
85 views
Grep all strings from several binary files into one txt file
I've decided to play around dumping all process memory of couple utilities in order to find out, how much trace of sensitive info an attacker could theoretically obtain from app's memory.
I've found ...
1
vote
3answers
665 views
is there a way to run a linux binary on OS X
Is there a way to run a linux binary in OS X?
I tried to run a binary but it said it isn't executable.
2
votes
3answers
326 views
Split binary data of fixed byte offset by byte position?
I have binary data which I review by xxd -ps in hex format.
I notice that the byte distance is 48300 (=805*60) bytes between two headers where the separator is fafafafa.
There is the beginning of ...
4
votes
4answers
315 views
How can I convert two-valued text data to binary (bit-representation)
I have a text file with two (2) only possible characters (and maybe new lines \n). Example:
ABBBAAAABBBBBABBABBBABBB
(Size 24 bytes)
How can I convert this to a binary file, meaning a bit ...
2
votes
2answers
54 views
Workaround for busybox head that drops NUL from data
TL;DR: Latest busybox (1.23.2) provided head is buggy and will happily drop NUL characters in the provided data. Replacing the binaries is not an option. I'm using head -[nc] -X in my scripts, is ...
2
votes
2answers
7k views
Convert binary mode to text mode and the reverse option
By the following way I convert a simple binary file into a text file
od –t x1 Check.tar | cut –c8- > Check.txt
What is the opposite way to convert the Check.txt to Check.tar as the original file
...
2
votes
2answers
543 views
How to obtain a plain (raw) binary dump of any file in Unix/Linux?
I have read many similar question on the Stack Exchange community but none of them address a 'clean' binary dump. I have used: xxd and sed combinations to try to obtain a clean binary dump from any ...
1
vote
2answers
225 views
ls or find option to exclude binary files
How can I list only files that aren't compiled code in the current directory?
I'm reviewing the custom scripts and code on several HPUX and Linux servers before transferring them to a newer system. ...
-2
votes
2answers
87 views
How can I identify if a binary file is set-user-ID? [closed]
In Linux, how can I identify if a binary file is set-user-ID?
Can I use ls -l?
0
votes
1answer
322 views
How do i write a shell script so that when i compile my c++ program it will put the binary into the Binary Directory
I have a directory called Binary and bunch of source files:
./
├── Binary/
├── lesson02.cpp
├── lesson04.cpp
└── lesson06.cpp
when I compile the source code
g++ lesson01.cpp -o lesson01
I want ...
0
votes
2answers
60 views
What does mean by “Debian on track to prove binaries' origins”?
I found an article on The Register of the UK about the reproducible builds in Debian. I couldn't understand much from it. Could anyone simply this for me, please? Here's the link: Reproducible Builds
11
votes
1answer
1k views
When can I edit strings in an executable binary?
I have an executable binary; let's call it a.out. I can see the binary contains strings
$ strings a.out
...
/usr/share/foo
....
I need to change the string /usr/share/foo to /usr/share/bar. Can I ...
1
vote
1answer
62 views
file (vdi) increase (at double) size after split and then cat operation
I'd splitted a vdi file with 7 gigabytes and then joined with cat command. The file works normally on VBox, but get 14 gigabytes after be re-joined. The exact operation was:
$ split -- bytes=2000M ...
0
votes
1answer
636 views
Can't run binary executable on Ubuntu 12.04
I get the following error: ./cataclysm: command not found when trying to run this executable on a Linux server over SSH.
When I run ldd cataclysm, I get:
linux-gate.so.1 => (0xf7759000)
...
4
votes
3answers
767 views
Modifying binary during execution
I often come across the situation when developing, where I am running a binary file, say a.out in the background as it does some lengthy job. While it's doing that, I make changes to the C code which ...
21
votes
5answers
3k views
Generating a random password; why isn't this portable?
I want to generate a random password, and am doing it like so:
</dev/urandom tr -dc [:print:] | head -c 64
On my laptop, which runs Ubuntu, this produces only printable characters, as intended. ...
2
votes
1answer
369 views
Equivalent of Java's String.getBytes() in Unix Shell (Cygwin)
Let's say I convert my string into byte array.
byte[] byte sUserID.getBytes(“UTF-8”); //Convert User ID String to byte array
Now I need to write a script on Shell that will have exactly the ...
0
votes
1answer
351 views
Convert serialized Java object to human readable
I have object of class
class X {
private DateTime dt;
"constructor, set/get"
}
I have one instance of this object serialized in file.bin.
I want to show content of `file.bin on the Linux ...
3
votes
1answer
111 views
Find/replace on block device?
Let's say I have an unmounted block device /dev/sda, and I want to replace all instances of MyPassWord with XXXXXXXXXX. (Hopefully my goal is obvious.)
What's the easiest way to do this?
2
votes
1answer
491 views
How to get binary representations of strings in Shell?
I'm using openssl dgst -sha1 -binary to get hash values of my strings in binary format.
(I'm using -binary flag because my version of openssl adds "stdout" before each hash value on default output, ...
4
votes
1answer
477 views
how to run a software in linux without installing it
I am trying to run Rstudio download page link. On my Windows machine, I just downloaded the zip file from zip/tarballs section and was able to run .exe without installing anything on my machine.
I'd ...
1
vote
1answer
155 views
How can I teach grep to treat properties-files like text-files
Since I upgraded grep from 2.16 to 2.21 it treats .properties-files like binary files. This sucks because I like to use grep -I ... to exclude binary files from the search results and ...
