BusyBox combines tiny versions of many common UNIX utilities into a single small executable.

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3
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2answers
3k views

What does ifup do when “/etc/network/interfaces” has an invalid netmask address?

The interfaces file looks like below: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.0.130 netmask 250.255.255.0 gateway 192.168.0.254 As you can see ...
3
votes
1answer
906 views

How to custom build debian's busybox?

I'm building an embedded system based on debian 7, and I'd like to make the most out of busybox that comes with debian. The problem is default busybox build in debian seems quite minimal, for example ...
2
votes
1answer
2k views

Unable to use busybox implementation of hwclock

I have a buildroot generated kernel (3.6.11) and root file system running on an x86 device. It uses busybox and I am trying to set the BIOS hardware clock using hwclock. I get this error whenever I ...
7
votes
3answers
881 views

Generate new name for moved file to prevent overwriting?

How can I generate a new name for a file if there's an existing file With that same name? In a Desktop environment a new name is generated my appending a number to the end of the file name, but how ...
2
votes
2answers
1k views

busybox initramfs loop mount

I'm trying to loop mount my root filesystem (a loop file) within a busybox initramfs. I try to run the command: mount /rootfs.raw /root ... which works on my Ubuntu laptop, however, I simply get ...
1
vote
2answers
2k views

Busy box Read file line by line

There is no read applet comming with busy box. Is there any way to read a txt file line by line using busybox? What I have now is while read line do echo $line done < "$InputFile"
2
votes
0answers
376 views

System cannot boot, continiously scanning btrfs filesystem

On the previous boot I installed HAL to make amazon prime video streaming work, which it did (mostly), but after reboot the system could not pull itself up all the way to BASH and drops to a failed ...
1
vote
1answer
289 views

Using ncurses for basic GUI on a process started inside an init script

I have a custom written application that runs on a embedded setup (buildroot). My application has to run every time the target device boots up and so I wrote an init script to do this and it works ...
2
votes
3answers
938 views

clone root directory tree using busybox

I have an TI DaVinci-based (ARM architecture kin to OMAP) system which netboots using TFTP and NFS-mounted root filesystem, and am trying to make it boot standalone without a netboot server. The ...
1
vote
2answers
1k views

SSH tunneling through a busybox router

I have a busybox router and I'm able to login to the console using telnet & I also have access to the web interface. My question is, how can I create an ssh tunnel from my local network through ...
2
votes
1answer
148 views

How can I find the Secure Attention Key (SAK) on my system and can I disable it?

In answer to My process was killed but I cannot understand the kernel notice, I was pointed to some documentation on the Secure Attention Key (SAK) on Linux. I have a embedded system generated using ...
1
vote
0answers
571 views

Check if Keyboard and Mouse are plugged in

Is there a way to detect if a keyboard and a mouse is plugged in (and working) in Linux? This will be embedded in a PXE setup, so I only have Kernel + Modules and Busybox available. Bonus question: ...
1
vote
0answers
46 views

Linux shell lagging one step

I upgraded busybox from 1.2.1 to 1.7.4 in my embedded system platform and it is connected to linux host via serial cable. Now when I type any command in shell on that embedded system platform like ...
0
votes
2answers
1k views

Is /etc/resolv.conf needed when using a static IP address?

I am trying to configure the IP address of my embedded device. The device should have a static IP address and I attempt to set this using the /etc/network/interfaces file with iface eth0 inet static ...
0
votes
1answer
378 views

Unable to get embedded device to ping anything on the network

I have an embedded device, built using buildroot, kernel version 3.6.11 running busybox. The kernel is built with completely default options. I have configured the device according to what the network ...
5
votes
1answer
2k views

updating `/etc/resolv.conf` on a read only filesystem

I currently have a busybox based embedded linux system. The filesystem is a readonly mounted jffs2 filesystem. One problem I've run into is that /etc/resolv.conf can't be updated by DHCP. Is it ...
3
votes
1answer
3k views

What are special prompt symbols for busybox's sh support?

I want to setup a time prompt on PS1. But, there is no document about what are symbols the busybox support. Is there any one know? Here are all which I knew. PS1='\u@\h: \w \$'
3
votes
1answer
744 views

Need to improve urlencode function

I need a way to URL encode strings with a shell script on a OpenWRT device running old version of busybox. Right now I ended up with the following code: urlencode() { echo "$@" | awk -v ORS="" '{ ...
1
vote
0answers
605 views

Busybox `uname -r` shows wrong kernel version

My kernel is 3.2.27 and /lib/modules/ contains 3.2.27 + folder. But when I am using /# uname -r 3.1.9+ It's showing a strange output. My problem is that for modprobe depends on uname when I put ...
2
votes
2answers
731 views

No /proc in a Busybox-based embedded Linux distribution

I am making an embedded Linux distribution and my board is a Raspberry Pi. My kernel version is 3.2.27 without initramfs and my root file system as follows: /lib /* contains ...
4
votes
1answer
8k views

Create and control start up scripts in BusyBox

I have compiled a custom linux kernel in BusyBox. BusyBox init does not support runlevels. When the kernel boots up in BusyBox, it first executes init which looks for the specified runlevel in ...
1
vote
1answer
2k views

How to chroot into busybox environment?

i have a filesystem build with buildroot, to compile code for a device using a old kernel and uClibc. Now i want to chroot into the fs. The problem is, i dont have /bin/bash, just /bin/busybox. How ...
3
votes
3answers
634 views

Script matching literal pattern over multiple lines?

I have a multi-line string in the variable $PAT. $PAT must be searched for within the file $FILE. If $PAT is in $FILE, it needs to print the file with $PAT removed. If $PAT is not found, then print ...
1
vote
1answer
2k views

busybox ash PS1 not expanding

I am trying to setup busybox's ash on an embedded system to support expanding the PS1 prompt statement. I have it currently set as PS1='\u@\h:\w\$ ' However, all that is displayed is literally ...
2
votes
1answer
2k views

Chaining commands within `watch`

Ok, this is driving me a bit nuts. I'm trying to watch the number of files in a set of subdirectories. find . | wc -l correctly returns the number of sub-folders and files. However, watch 'find . | ...
5
votes
1answer
269 views

Using OGG/Vorbis, is there a way to continue to record to an existing audio file?

I am using Vorbis/ogg to record audio (using arecord and then pipping to oggenc). I have downloaded oggvideotools, which gave me oggCat, which will let me join two previously recorded audio files into ...
5
votes
1answer
560 views

inittab '-' character in process field

I have a an inittab file with the following entry: console::askfirst:-/bin/ash According to this Man page a '+' character in the process field means init will not do utmp and wtmp accounting ...
1
vote
3answers
6k views

bash merge 2 lists removing duplicated

I have an embedded linux system using Busybox (OpenWRT) - so commands are limited. I have two files that look like: first file aaaaaa bbbbbb cccccc mmmmmm nnnnnn second file mmmmmm nnnnnn ...
1
vote
1answer
1k views

How do I safely unmount a network share on Linux STB without crashing (I get GSOD)?

I have a network share named dreambox on C:\dreambox that is shared with the group Everyone in Windows. I have mounted it to /hdd on a Linux-based STB with OpenDreambox (OpenEmbedded) using Telnet ...
2
votes
5answers
13k views

Bash iterate over a list of strings

I have this bash script: for opt in string1 string2 string3 ... string99 do somestuff It works, but I would like to replace the explicit listing of my strings with a file which actually contains ...
3
votes
3answers
620 views

How to remove a trailing CRLF from a file?

I have a binary file with a trailing CRLF (2 bytes total) that I want to remove. How should I do it? Please note that I'm using busybox and I don't have perl.
3
votes
2answers
858 views

Remove 50GB oldest files in busybox when used capacity reaches 95%

Ok i have requested a code here but initial i didn't ask to make it busybox compatible. My bad. I'm new to linux and coding. The code needs to do the following: Delete 50GB of oldest data (dir ...
3
votes
2answers
753 views

How can I get the GNU screen command to automatically start with every BusyBox ash session?

On an embedded device with BusyBox installed I want to set it up so that the gnu screen command is automatically started when any BusyBox session is started. I have seen that I can add the screen ...
2
votes
0answers
115 views

Busybox exits instantly printing 'SIGUSR1'

I was tinkering with my router these days. It runs on MIPS core and the OS is based on Linux. But the builtin busybox is very limited. I managed to export a binary of busybox compiled for MIPS through ...
5
votes
1answer
1k views

Search for a string in files recursively in BusyBox 1.0? [duplicate]

Possible Duplicate: How to grep a text recursively on BusyBox 1.0? How can I search for a string in a file recursively in BusyBox 1.0 if find and grep are not available ? (I want to telnet ...
0
votes
1answer
706 views

buildroot/busybox: launch bootchartd on startup

I built a custom linux image using buildroot and busybox. To speed up the boot process I'd like to use bootchartd (built-in version of busybox) to profile the process. However bootchartd is not ...
3
votes
1answer
360 views

Busybox NAS appliance

I have a NAS appliance that crashed last weekend. The IT guys apparently / maybe didn't recover it in the right way? There's about 50,000 directories in a "lost+found" directory each with a numeric ...
1
vote
0answers
548 views

Run script as root under Busybox?

I have written a shell script that has to be run as root under Busybox. My first thought was to add the script to /etc/busybox.conf like this: /sbin/my_script.sh = ssx root.root But this only works ...
1
vote
1answer
445 views

kexec from within initramfs

Can kexec be used from within initramfs to load up a new image and kernel? It seems that kexec calls shutdown which then looks for /dev/initctl, which is missing from a busybox initramfs image. Any ...
6
votes
3answers
4k views

Wake-on-LAN with BusyBox?

Is it possible to implement the wake-on-lan magic packet in bash? I'm using a old, customized BusyBox and don't have ether-wake. Is it possible to replace it with some other shell command, like: ...
6
votes
2answers
910 views

How to develop a small linux distro?

Since Linux uses open-source packages, I was wondering if I could develop my own Linux distro by compiling these packages. I tried to read the Linux From Scratch book but it's quite big and uses lots ...
1
vote
1answer
3k views

How to grep a text recursively on BusyBox 1.0?

How can I find a file containing a certain string on a BusyBox 1.0, if grep -r does not work?
3
votes
2answers
360 views

shell howto: save multiple binary data files (jpg) to one file with some additional data and separate again

I have a system with restricted calculational power (fritzbox) and functions (busybox) and an webcam, able to deliver JPG files. Now I'm looking for for a method (based on shell script) to download ...
2
votes
1answer
2k views

Linux 2.6.32, busybox, Identify physical SD device

I have a USB card reader with two SD card interfaces and two USB ports (so it can also act as a USB hub) all on the same device. I am running an embedded Linux device that is unsupervised in its use ...
3
votes
6answers
5k views

Trying to set date on a Linux based machine from another machine

I am running busy box on an embedded platform. I would like to set the date on the box properly each time I reboot the hardware. I have no way to save the time persistently, so am reduced to setting ...
5
votes
2answers
2k views

How to get 3 minutes future date?

I want to get the date 3 minutes on the future. For example, if "now" is 01-Jan-70 00:00:00 GMT I want to get 01-Jan-80 00:03:00 GMT How should I do it? I'm working with busybox linux.
1
vote
1answer
315 views

Check a bash variable against a file

I have a bash variable ($HTTP_COOKIE) which contains a string. I want to check if this string matches the content of a given file (token). I'm working on a busybox linux. How should I do?
2
votes
1answer
7k views

how to make read only filesystem writable on busybox?

I want to change some files on my router. Firstly i can change everything in /var, but i want to change /etc/fstab. when i try to change it, i get an error message that says filesystem is read only. ...
7
votes
2answers
616 views

Which sed version is not GNU sed 4.0?

I'm trying to figure out which version of sed that I've got on BusyBox 1.18.3. The --version output is cryptic. $ sed --version This is not GNU sed version 4.0 The following code is from the ...
7
votes
3answers
9k views

How do I check busybox version (from busybox)?

I'm using busybox in a embedded system, and I would like to check its version. How do I check the busybox version from within busybox?