hi i was wondering what is the best way to find out the configuration of a kernel if you don't have access to a config file? Im having some kernel issues and need to see how it was conifgured.

some questions not specific to the post title but related -

Is ther e a way to generate a config file post compile?
Is it possible to have it generate one while compiling or are they files you need to write yourself?

thanks for any responses in advance.

Most kernels these days are compiled with ".config" or ".config.gz" support. If so, you can get the configuration from the running kernel in /proc/config or /proc/config.gz.

EDIT:
Sorry... it only shows up in /proc/config.gz if you have the .config.gz support enabled. Otherwise you'd have to use the script scripts/extract-ikconfig from the kernel source tree to get the configuration.

i figured the information would be in proc. the only problem i see is i don't have a /proc/config file or directory. this is the output of ls /proc/

[jeff@localhost proc]$ ls /proc/
1 2020 2539 2929 3123 crypto kcore stat
10455 2024 2558 2931 3125 devices kmsg swaps
10477 2045 2582 2936 3132 diskstats loadavg sys
10482 2066 2612 3 3134 dma locks sysrq-trigger
10558 2098 2618 3048 344 dri mdstat sysvipc
10559 2198 2624 3068 395 driver meminfo tty
10560 2208 2630 3076 4 execdomains misc uptime
10879 2220 2636 3078 79 fb modules version
1412 2433 2637 3080 9 filesystems mounts vmstat
151 244 2738 3082 92 fs mtrr
152 2448 2831 3084 acpi ide net
153 2467 2842 3086 asound interrupts partitions
154 2476 2872 3087 buddyinfo iomem pci
18 2487 2920 3090 bus ioports scsi
1973 2498 2924 3118 cmdline irq self
2 2520 2927 3121 cpuinfo kallsyms slabinfo

the kernel is 2.6.11.10 and the distro is fedora core 2. thanks for your quick reply.

Yes, I just posted minutes later my (subtle) complaint that too many distros atlk too much about the packages they include but never about the config file they set for the kernel compile.

To offer an linux distro and not explicitly include the associated kernel compile file is a total lack of attention to detail. OK, so that's not a bug or an offence or anything you'll go to jail over, but surely no linux distro is complete without a the kernel compile config file somewhere, perfrebly the actually web site alot with all the packages they installed.

well i've used fedora core and they seem to include a config file for their kernels in the /boot/ directory. I don't know where (if anywhere) config files show up for custom kernels.