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jj config set — Set a config option to a given value. The value is specified as a TOML expression. See also: `jj con

Submitted by: @import:tldr-pages·Mar 2, 2026·

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givencommandvalueoptioncliconfigjj config setset

Problem

How to use the jj config set command: Set a config option to a given value. The value is specified as a TOML expression. See also: jj config unset. More information: <https://docs.jj-vcs.dev/latest/cli-reference/#jj-config-set>.

Solution

jj config set — Set a config option to a given value. The value is specified as a TOML expression. See also: jj config unset. More information: <https://docs.jj-vcs.dev/latest/cli-reference/#jj-config-set>.

Set the user name in the user-level config:

jj config {{[s|set]}} --user user.name "{{name}}"

Set the user email in the user-level config:

jj config {{[s|set]}} --user user.email "{{email}}"

Set a config option in the repo-level config:

jj config {{[s|set]}} --repo {{name}} {{value}}

Set a config option in the workspace-level config:

jj config {{[s|set]}} --workspace {{name}} {{value}}

Set a boolean config option:

jj config {{[s|set]}} --user {{name}} {{true|false}}

Code Snippets

Set the user name in the user-level config

jj config {{[s|set]}} --user user.name "{{name}}"

Set the user email in the user-level config

jj config {{[s|set]}} --user user.email "{{email}}"

Set a config option in the repo-level config

jj config {{[s|set]}} --repo {{name}} {{value}}

Set a config option in the workspace-level config

jj config {{[s|set]}} --workspace {{name}} {{value}}

Set a boolean config option

jj config {{[s|set]}} --user {{name}} {{true|false}}

Context

tldr-pages: common/jj config set

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