Questions tagged [busybox]
BusyBox combines tiny versions of many common UNIX utilities into a single small executable.
412
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How to disown a command in the busybox shell?
I'm trying to write a quick-and-dirty shell script daemon to run on a home router that has a busybox shell, which doesn't support disown. Is there any way to do either of the following?
Run a command ...
- 345
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1
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37
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Customized system cannot obtain dynamic IP？
I am customizing the system using version 6.4.0 of the kernel, and the file system is created using busybox. However, I don't know why enp3s0 cannot obtain an ip. It seems that using udhcpc can obtain ...
- 101
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25
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How to make 'adb shell' to read /etc/profile or other configuration files?
I am working on an embedded Linux system (kernel-5.10.24), and it uses ash from busybox as /bin/sh. The system support login from serial console and adb shell from PC.
Now I found the shell started ...
- 327
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31
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How to $poweroff BusyBox from windows machine
I have an old windows xp pc and a Linux 2.6.15.7-ElinOS-453 i686
with BusyBox v1.6.1. I want to shutdown the windows xp computer from the Linux computer at the same time, and viceversa. (They are both ...
- 19
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43
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Busybox support for ANSI escape codes?
I am working on some scripts that must run inside of initramfs. One of the scripts does an operation that takes a few minutes, so I want to display a nice progress bar that updates in-place, add in a ...
- 504
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0
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19
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Manual removal of Nvidia driver fails due to init and busybox
I'm using PorteuX (Slackware based) and in the shutdown/reboot process I want to unmount everything, which works fine unless I boot with Nvidia drivers. In this case, just before reboot -f step if I ...
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1
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239
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wpa_supplicant wired fails to authenticate
I'm trying to get wpa_supplicant working on an embedded controller with busybox as the OS.
I'm running wpa_supplicant 2.7, but the authentication keeps failing.
In the radius server I see the error &...
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27
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miscutils error when compiling BusyBox for Android
I'm trying to compile Busybox for Android.
Command used:
make CC=$TOOLCHAIN/bin/$TARGET$API-clang \
AR=$TOOLCHAIN/bin/llvm-ar \
RANLIB=$TOOLCHAIN/bin/llvm-ranlib \
CFLAGS="-I/home/...
- 11
2
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0
answers
64
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Should programs terminate on ENOSPC error?
In bash, the command hexdump -C /dev/urandom > hexdump.txt does not terminate.
It keeps going indefinitely, even if the filesystem is full.
read(0, "\326\210L0\rL<\177\207\214\3\2237\vi\315\...
- 31
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356
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How to start and manage a process in busybox inittab, and rcS as early as possible?
I am working on an embedded Linux system where busybox is being used as init.
I have 2 requirements on running my application.
My application needs to start as early as possible;
It needs to be ...
- 327
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0
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28
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syslogd not ouputting year information
I updated busybox to 1.35.0 and had the same settings as earlier but for some reasons the syslogd is not outputting year in the timestamp information. Prior to this I was using busybox 1.19.3 and it ...
- 181
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1
answer
180
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Launch process with limited capabilities on minimal Busybox-based system
In a minimal Busybox-based Linux system with access to the root user, how can one launch a process with a specific limited set of Linux capabilities(7) without requiring any tools beyond busybox?
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360
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Buildroot Login without Root Password
Starting with some of the trunk builds of Buildroot in 2023, I've been unable to login to my buildroot systems with getty. Honestly, I'd rather a mechanism to just be dumped into a root shell. But, ...
- 101
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1
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120
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Failed to login to Linux shell with passwd generated by mkpasswd -m sha-256
I am working on an embedded Linux system, where busybox (1.31.1) is used as init.
I enabled login in /etc/inittab but I failed to login to system with invalid password.
The /etc/shadow in rootfs is ...
- 327
2
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1
answer
252
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Error occurred in mounting file system during Linux bootup with busybox
I am working on an embedded Linux system, which uses busybox as init.
When system bootup, there are two error logs shown as follows,
[ 3.901185] Run /linuxrc as init process
[ 3.909861] process '...
- 327
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2
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224
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BusyBox's tar --exclude doesn't exclude
Extract a tar file with content dir1/dir2/file, using --exclude dir2 switch. The gnu tar excluded but busybox's tar doesn't.
Use --exclude dir1/dir2 works fine, but why? Is there a way to exclude any ...
- 101
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0
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152
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initramfs prompt appears while booting - Error regarding zfs mountpoint
I am getting the following error if i try to boot my system:
Busybox v1.30.1
Gave up waiting for root file system device. Common problems:
- Boot args (cat /proc/cmdline
- Check rootdelay= (did ...
- 33
-1
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1
answer
505
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xxx.sh: : not found
I'm debugging a shell script and coming across this error. I have no idea what's going on with my script.
#!/system/bin/sh
function SetEQ(){
prefFile='/mnt/media_rw/6633-3539/tmpFiles/com.smp....
- 151
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1
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45
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How to execute wine command through busbox?
I am building minimal operating system using busybox.I am writing init file, I want to call script1.sh file from init file.
Challenges I am facing are:
After running init file it is showing ./script1....
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1
answer
80
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How to integrate C program to minimal os using busybox
I am building minimal operating system using busybox. So I want to add my program in my operating system, so I can boot that program from BIOS. So how can I integrate aleast "Hello World" ...
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1
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1k
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How to run interactive busybox shell inside initramfs so that it's PID=1
Background
I need to assemble my own initramfs and before writing its init script I want to do all the required operations by hand, i.e. from an interactive shell. My choice is statically linked ...
- 123
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0
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380
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Can't boot and stuck on BusyBox
When i try to boot on my Linuxmint laptop, i'm stuck on BusyBox with this message
-Boot args (cat /proc/cmdline)
-Check rootdelay= (did the system wait long enough?)
-Missing modules (cat /proc/...
- 21
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1
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523
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How to enter rescue mode (RescueInitramfs) on Debian server?
I am trying to boot into RescueInitRamfs (https://wiki.debian.org/RescueInitramfs) on my Debian server after configuring DropBear as per https://benediktkr.github.io/ops/2015/05/01/remote-fde.html (...
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1
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506
views
How Can I Transfer Files to a BusyBox machine with only ftpd, telnetd?
I'm trying to send and receive files from a Linux machine running busybox. The following commands are enabled, and I can't use anything else:
[, [[, ash, basename, brctl, cat, chmod, chpasswd, cp, ...
3
votes
1
answer
268
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Equivalent to "ps -p"
I'm using a board without the full ps command installed.
What I need is ps -p equivalent (something that sets $? if a specific PID is found or not).
Is there a way to accomplish this with another ...
- 323
1
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2
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657
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One-way synchronize with cp and busybox
I need to one-way synchronize local folders using only cp and/or other tools available in the BusyBox 1.35 which has no rsync. I was hoping for something like: cp -auv /source/ /target, but it won't ...
- 131
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171
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Why is /dev/null needed to run asynchronous jobs in busybox sh?
I'm curious why this special device is needed to fork the command and run it asynchronously in the minimal Busybox shell.
BusyBox v1.30.1 (Debian 1:1.30.1-4) built-in shell (ash)
Enter 'help' for a ...
- 37
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1
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108
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Is initramfs expandable when embedded in kernel?
If I embed initramfs in the kernel image, (I can do this by setting the config variable for the iniramfs file source location, and initramfs becomes located in data section I guess), and after I boot ...
- 367
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1
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405
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Syslog is overwriting logfile after 200k size
I am running Linux on a TI-J7 embedded board. It is using syslogd from busybox. But the issue I am facing with syslog is it overwrites logfile when it exceeds 200kb size and so not able to collect ...
0
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1
answer
117
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DBUS get free disk space of usb memory
I'm trying to determine how much disk space is free on an USB memory device by using a DBUS connector (sdbus-c++). For receiving signals of the connection status of the usb memory I use the org....
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1
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452
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Understanding Sed Usage in Makefile
I'm trying to understand the usage of the sed command in Linux, specifically when it is being used in a Makefile. I have included the command I'm trying to interpret below. My interpretation so far is ...
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2
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2k
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Linux Kernel Boot: Failed to execute /init (error -2)
I'm trying to create a minimal linux distro using the tutorial "Build a minimal Linux with only Busybox in 1 hour" of "Write your own Operating System
" all worked bue when I boot ...
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1
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3k
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"Connection refused" when I try to send a UDP packet with netcat on an embedded-linux board
I'm trying to send a binary packet to a local process, via netcat (nc), like this:
nc -w 1 -u localhost 10000 < my_binary_packet.bin
The output is:
read(net): Connection refused
Anyone know what'...
- 2,212
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1
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81
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How to simplify output redirection command line?
I have frequently used output redirection commands in my Linux environment, for example,
echo mymodule set number 10 >/proc/aaaa/bbbb_cmd
And I want to omit the echo .... >.... and use this ...
- 11
2
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2
answers
200
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Setting time zone in a kindle bash file
I've recently jailbreaked my kindle to make it a clock that shows a certain image for each minute of the day. I used the instructions mentioned in this article
https://www.instructables.com/Literary-...
1
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2
answers
889
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How to delete files based on the creation date of other files?
I have a security camera running Linux (busybox 1.32.0) which I can set to record video continuously in (configurable) 30 seconds chunks in a folder structure:
recording/2022/04/26/15/2022-04-26-15-30-...
- 214
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0
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239
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Booting arm64 linux from PHRAM device on RAM failed on systemd processing
I'm trying to boot a busybox based ext4 Liunx image built by yocto, from the RAM, using PHRAM device(dev/mtdblock0) as rootfs. The machine is Intel FPGA board(Stratix 10). I have enabled PHRAM in ...
- 11
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1
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2k
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How to add DNS server via script?
How to add DNS server via script if nameserver is not written in resolv.conf .
like first check following lines are there or not in resolv.conf file:
nameserver 8.8.8.8
nameserver 8.8.4.4
If not then ...
- 11
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2
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945
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dual boot Windows and Linux, SATA Mode
I have Windows 10 and Ubuntu 20.04 next to each other, recently I had updated my BIOS version(such a mistake), and couldn't boot any system, so I set up default BIOS version.
So now I can load Windows,...
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0
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208
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Can't Chroot into archlinux
I have Installed the generic aarch64 rootfs to an sdcard , and have placed It inside my phone and am trying to chroot into it - via a superuser adb shell , by running busybox chroot /data/local/mnt /...
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1
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285
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What is BusyBox?
Just wondering what BusyBox is used for and if I can use it for my project.
I have seen the Philips Hue Bridge runs BusyBox and I would like to use it on a relatively small, but powerful controller, ...
- 105
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1
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1k
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Pop OS BusyBox FSCK Not Found (Beginner)
I broke Windows 7 and can't fix it, Windows 10 on my laptop broke itself. Decided I'd leave Windows behind and give Linux a test drive since my laptop's OS is pretty ruined. I did the install, my ...
0
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1
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729
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Linux Mint: ALERT! "UUID" does not exist. Dropping to a shell!
I am trying to duel boot Linux Mint with ChromeOS from an SD card. I installed it from a bootable usb and when I run it from the SD card, it stays on the boot up screen for a few minutes, then this ...
0
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1
answer
47
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Why can't I prune this directory?
busybox version 1.33.0
I'm trying to copy the entire home folder.
Inside of home, /dev/sda2/ is mounted, like so:
/home/user/sda2
/home/user/sda2/root
/home/user/sda2/home_backup
Above you can see ...
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175
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How to replace content of nested files?
I need to find all project.updated files in some nested directory and use these files for content replacement of project.json file in the same directory.
I'm using BusyBox (1.33.1).
/apps
/...
- 1,539
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0
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104
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lsblk alternative for busybox? [duplicate]
I installed busybox on my Android device.
The command list is very long but lsblk is no supported as this log shows:
...
Currently defined functions:
[, [[, acpid, adjtimex, ar, arp, ash, awk, ...
- 873
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2
answers
2k
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How to load kernel modules for current hardware in init of minimal Busybox-based system
In a minimal Busybox-based Linux system, which commands must be invoked as part of the init script to ensure all kernel modules for the current hardware are loaded?
- 1,913
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what does the -s option in busybox --install [-s] [DIR] stand for?
When typing busybox --help, one of the usages is: busybox --install [-s] [DIR]. What does the -s option stand for?
- 342
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4
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642
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Why this word can't be grep?
I have access to busybox only, v 1.27.
I'm trying to use a huge TXT file I extracted from a PDF document as a TXT dictionary, to be console friendly. The word I'm trying to get is the very first word ...
- 143
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0
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268
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EXIT trap is ignored on Ctrl-C when PID == 1
a.sh:
trap 'echo cleanup' EXIT
sleep 3
To reproduce, press Ctrl-C before the script finishes:
$ docker run --rm -itv $PWD:/app -w /app alpine:3.14 sh a.sh
^Ccleanup
$ docker run --rm -itv $PWD:/app -...
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