Bug 450426
| Summary: | better environment handling for nash | ||||||
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| Product: | [Fedora] Fedora | Reporter: | JW <ohtmvyyn> | ||||
| Component: | mkinitrd | Assignee: | Peter Jones <pjones> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 10 | CC: | dcantrell, wtogami | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2009-05-06 15:12:54 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 308636 [details]
patch to improve nash's environment substitutions
This message is a reminder that Fedora 8 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 8. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '8'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 8's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 8 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping nash is going away as we move to dracut; making big changes to allow more variable substitution isn't going to happen at this point |
Description of problem: Current nash does very lame environment variable substitutions. With a tiny amount of work, this can be improved enormously. Version-Release number of selected component (if applicable): mkinitrd-6.0.19-4 How reproducible: Always Steps to Reproduce: 1. export HOST=xyz 2. In nash script: "echo abc${HOST}def" 3. In nash script: "echo $HOST" Actual results: 2. abc${HOST}def 3. xyz Expected results: 2. abcxyzdef 3. xyz Additional info: Given that grub boot parameters that are not interpreted by kernel are passed through to the environment, it can sometime be useful for nash to be able to use these during early init. For example, if a boot string has "kernel ... root=LABEL=/ HOST=myhost", then nash's environment will contain "HOST=myhost". And it is therefore possible to massively reconfigure an entire root filesystem, specialized for a particular host, by simply having nash do "ln -s xxx xxx.$HOST" or similar init script. Very useful for people maintaining a large number of machines configured in a number of distinct ways. Boot off dvd and just chose the target HOST at boot. Come to think of it, why does nash exist at all? What is wrong with bash?