Bug 217595

Summary: sysctl usage
Product: [Fedora] Fedora Reporter: Karel Zak <kzak>
Component: initscriptsAssignee: Bill Nottingham <notting>
Status: CLOSED RAWHIDE QA Contact: Brock Organ <borgan>
Severity: medium Docs Contact:
Priority: medium    
Version: 6CC: rvokal
Target Milestone: ---   
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Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: 8.52-1 Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2007-04-16 23:38:12 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Karel Zak 2006-11-28 21:59:29 UTC 
Please, see /etc/sysconfig/network-scripts/init.ipv6-global.

There is used "sysctl -a | grep", although the sysctl command supports
selection. It means

  sysctl -a | grep "^net\.ipv6\.conf\."

could be replaced with:

  sysctl net.ipv6.conf

Why? See:

  # sysctl net.ipv6.conf | wc -l
  84
  # sysctl -a | wc -l
  608


To be honest, the way how this init script reads list of interfaces is *ugly*. 

  sysctl -a | grep "^net\.ipv6\.conf\." | awk -F. '{ print $4 }' | sort -u

should be replaced with:
 
  ls /proc/sys/net/ipv6/conf/
Comment 1 Bill Nottingham 2007-04-16 23:37:54 UTC 
Created attachment 152727 [details]
diff 

Here's what's going in 8.52-1. Cuts the time for showsysctl from 16 seconds to
a little over 1.