logo
down
shadow

How to execute commands in chroot?


How to execute commands in chroot?

Content Index :

How to execute commands in chroot?
Tag : c , By : nickthecook
Date : January 02 2021, 06:48 AM

will help you If you use chroot(), you have to consider the consequences of what you do. One of the major consequences is that many (most, all) of the commands normally available are not available unless you make them available in the chroot()'d environment.
Doing that job properly is non-trivial. You may need parts of /dev, /bin, /etc, /usr, /lib (and probably others too) installed appropriately under the new root directory. Symlinks back to 'outside the chroot() environment' won't work, in general. You have to make copies of what's important. One side effect of all this: /tmp is very rarely an appropriate place to create a fully operational chroot() environment. You might get away with a limited access sub-directory under /tmp, but putting a user in /tmp doesn't isolate them from other users, or other users from them, very well.

Comments
No Comments Right Now !

Boards Message :
You Must Login Or Sign Up to Add Your Comments .

Share : facebook icon twitter icon

Bash: Chroot command passing 2 string parameters or better run a series of commands


Tag : perl , By : Tonci Grgin
Date : March 29 2020, 07:55 AM
seems to work fine Chroot should handle this just fine. Just make sure that your perl script can find a Perl interpreter from the chroot context, that the Perl executable can find the shared libraries it needs, and that your variables, if they contain paths, have paths relative to the new root, not the old. You may want to compile a statically-linked perl executable, if that's easier for you than making copies of the required shared libraries in the chroot.

Bash: executing commands from within a chroot and switch user


Tag : linux , By : Tonix
Date : March 29 2020, 07:55 AM
hope this fix your issue Im writing a script that should do this... , try
chroot /chroot_dir /bin/bash -c "su - -c ./startup.sh"

How to execute linux command in a chroot jail


Tag : c , By : jbcrail
Date : March 29 2020, 07:55 AM
around this issue Either the binaries you copy in to your chroot environment must be statically linked, or you need to copy in the necessary shared libraries as well (/lib / /usr/lib).
Non-root processes can execute in a chroot environment just as root processes can, but only root processes can call chroot() so you will need to have a root process set up the chroot environment and then switch to the unprivileged user id.

java - execute commands in chroot


Tag : java , By : user152423
Date : March 29 2020, 07:55 AM
wish helps you The way I am doing it isn't fancy, but it works. Is there a better solution?
1. mount all filesystems
2. run chroot some-shell
3. use expect library (or something equivalent)
4. unmount filesystems

Shell Script that does chroot and execute commands in chroot


Tag : bash , By : Gipsy.D
Date : March 29 2020, 07:55 AM
should help you out When you run chroot without telling it what to do, it will try to start chrooted interactive shell session. So your script would "pause" at that point and when you are done with that interactive shell session, it continues out of chroot again.
One of the quick and dirt options would be to abuse here-document, like this:
chroot /home/mayank/chroot/codebase /bin/bash <<"EOT"
cd /tmp/so
ls -l
echo $$
EOT
Related Posts Related QUESTIONS :
  • Why does this C program print output "10" irrespective of the for loop?
  • taking output 2D array in matrix form
  • sizeof char pointer and pointer to pointer
  • does the following program cause memory leak?
  • Innacurate file readings from fopen and/or fscanf
  • Searching an element in an Array using Recursive Function in C Language
  • Most fastest C code to count recursively directories in Linux ( without files )
  • Why does C not offer syntactically transparent references like C++ and Java do?
  • Code doesn't get excuted after using continue in while loop
  • How can I maintain correlation between structure definitions and their construction / destruction code?
  • Avoid race conditions when using pointers and threads
  • Binary and Decimal converting
  • How to create input tensors and use with interpreter in Tensorflow Lite (experimental C API)?
  • Unexpected typecasting between values in C
  • Trouble with Forking Process and Calling bc using execve
  • Glib Threads vs GMain Loop Eventing
  • Why does the byte sequence turn when I cast a char array to an integer array?
  • Is there any difference usage in external interrupt between GPIO (AHB bus)and those (APB bus)?
  • Trouble programming AVR to interpret input from Arduino rotary encoder module
  • Is it correct to use a do-while loop inside a for loop? Why and why not?
  • Why we can't use dot for new created pointers to structs
  • Atomicity of fprintf from MPI processes
  • Printing of negative value in c via printf
  • What's the difference between global or local variables regarding the main function?
  • movsd from memory to xmm0 in c x86-64 jit
  • Problem with a function that insert the content of a csv into an array of struct
  • Segmentation Fault running time on sem_post(flag)
  • Extracting values from an incoming bluetooth serial on an arduino
  • "How much memory space does an array takes if the maximum size that is declared is not used?"
  • C GTK2 frustrated with gnome documentation
  • What really happens when a dynamic memory allocation is explicitly converted to struct type?
  • Re-Indexing Bits Within a Char
  • pointer de-referencing balagurusamy
  • Is it safe to memcpy regex_t?
  • Find a tight upper bound on complexity of the below program:
  • FFTW results differ from FFT in MATLAB
  • How to fix Misra 2012 violation , " Assignment operation in expression "
  • What is the difference between "int *p =0;" and "int *p; *p=0;"
  • Strncpy gives unwanted characters at end of string
  • What is really happening behind when a constant is assigned to a pointer variable?
  • Having trouble tracking logic of program includes Fork()
  • Are leftshift operators dependent on register size?
  • How to pass and receive back pointer to array of structures?
  • How to convert 2 bytes into a signed short in C
  • Using while loop to print Ascii Table with 10 characters per line
  • Is it possible to compress binary files with Huffman-encoding?
  • Why I am getting missing terminating " character?
  • Function call problem in data structure learning
  • Getting a segmentation fault trying to pass a node
  • Copying chars from file into an array
  • How to measure the time in seconds between two characters while user inserting them as an input
  • How to print two strings on the same line in c
  • Passing ("text"+1) argument to Strlen function in C. Why is Output 3?
  • to find the total no of letter in a string. please checkout my code too
  • Why do hiredis functions use void* instead of redisReply*?
  • Is there any case where the C static keyword should or could be used in header files for variables?
  • Sort an array in the relative order of elements of another array in c
  • Why functional programming over c
  • Re-assign value to variable if rand() repeats a number
  • does decrementing a NULL pointer lead to undefined behavior?
  • shadow
    Privacy Policy - Terms - Contact Us © scrbit.com