Modify Linux kernel or NuttX .config files from command line without interactive menuconfig. Use when needing to enable/disable config options, set values, query option states, or batch-modify kernel configurations in scripts or CI/CD pipelines.
Installation
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Modify Linux kernel or NuttX .config files from command line without interactive menuconfig. Use when needing to enable/disable config options, set values, query option states, or batch-modify kernel configurations in scripts or CI/CD pipelines.
kconfig-tweak
Command-line tool for modifying .config files without launching interactive menuconfig.
Quick Reference
# Enable/disable options
kconfig-tweak --enable DEBUG_INFO
kconfig-tweak --disable MODULES
kconfig-tweak -e SMP -d PREEMPT # Multiple in one command# Set values
kconfig-tweak --set-val LOG_BUF_SHIFT 17
kconfig-tweak --set-str LOCALVERSION "-custom"# Query state
kconfig-tweak --state DEBUG_INFO # Returns: y, n, m, or undef# Specify config file
kconfig-tweak --file boards/myboard/.config --enable USB
# Module support
kconfig-tweak --module DRM # Set to m (module)
Commands
Command
Short
Description
--enable OPTION
-e
Set option to y
--disable OPTION
-d
Set option to n
--module OPTION
-m
Set option to m (module)
--set-val OPTION VALUE
-
Set integer/hex value
--set-str OPTION STRING
-
Set string value (quoted)
--undefine OPTION
-u
Remove option definition
--state OPTION
-s
Query current state
Position Control
Insert options after a specific option (useful for maintaining config order):
kconfig-tweak --enable-after USB USB_STORAGE # -E
kconfig-tweak --disable-after NET BRIDGE # -D
kconfig-tweak --module-after DRM DRM_I915 # -M
