I'm a programmer of too many years to mention, but I'm only just starting my journey into unix based systems. I'm staring out with the Raspberry pi as they're inexpensive and have the built in GPIO which is always good fun. It's running the default Raspbian system.
Unix scripting is completely new to me, while I'm geo'll run atting used to it slowly I'm struggling with one problem, I'm not even sure if it's the right thing to do.
I want to change settings in a conf file. Example:
Code:
A Setting=5
Another Setting=15
The Last Setting=42
I'll run a sh to change Another Setting to 27.
Now, I can achieve this in two ways, I can have a bunch of files with different settings and rename/copy the one I want at the time. Or I can search the file and change the setting. The second is the preferred method as it's much more flexible.
How practical is it to write script that will search a file for settings and change them? Is parsing files something that's often done with scripts, if so, what commands do I need to get acquainted with? Or do people jump to python or other methods for such things?
All input welcome.
Thanks.
Moderator's Comments:
Please use CODE tags as required by forum rules!
Last edited by RudiC; 11-27-2017 at 11:06 AM..
Reason: Added CODE tags.
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LEARN ABOUT LINUX
npm-config
NPM-CONFIG(1)NPM-CONFIG(1)NAME
npm-config - Manage the npm configuration files
SYNOPSIS
npm config set <key> <value> [-g|--global]
npm config get <key>
npm config delete <key>
npm config list [-l] [--json]
npm config edit
npm get <key>
npm set <key> <value> [-g|--global]
aliases: c
DESCRIPTION
npm gets its config settings from the command line, environment variables, npmrc files, and in some cases, the package.json file.
See npm help 5 npmrc for more information about the npmrc files.
See npm help 7 npm-config for a more thorough discussion of the mechanisms involved.
The npm config command can be used to update and edit the contents of the user and global npmrc files.
Sub-commands
Config supports the following sub-commands:
set
npm config set key value
Sets the config key to the value.
If value is omitted, then it sets it to "true".
get
npm config get key
Echo the config value to stdout.
list
npm config list
Show all the config settings. Use -l to also show defaults. Use --json to show the settings in json format.
delete
npm config delete key
Deletes the key from all configuration files.
edit
npm config edit
Opens the config file in an editor. Use the --global flag to edit the global config.
SEE ALSO
o npm help 5 folders
o npm help 7 config
o npm help 5 package.json
o npm help 5 npmrc
o npm help npm
January 2019 NPM-CONFIG(1)
11-27-2017
Replacing settings in config files.
