0
1
Stupid Shell Tricks
With Apache Accumulo
Mike Drob
madrob@cloudera.com
@mikhaildrob
About Mike
2
• Dev at Cloudera (~ 6 months)
• Accumulo Committer (~ 1 year)
• LEGO® Engineer (~ 20 years)
http://upload.wi...
Survey
3
• Who knows…
• Who this guy is?
• That 1.6.0 is released!
• Who has…
• Used Accumulo?
• Used the Shell?
http://en...
4
http://en.wikipedia.org/wiki/File:Bubalus_mindorensis_by_Gregg_Yan_01.jpg
New Shell Features
5
• Password Indirection
• Command Interruption
• History Search/Expansion
• Provide Extensions
http://...
Password Indirection
6
• Providing password on command line is BAD
• …but typing long passwords is hard.
• Exposed to ps a...
Command Interruption
7
• Long running commands are a pain.
• Ctrl-C used to kill the whole shell…
• Now it just kills the ...
History Search/Expansion
8
• Many bash-similarities
• Ctrl-R to search history
• Use ! To expand commands
http://en.wikipe...
9
10
Thank You!
Mike Drob, Cloudera
@mikhaildrob
(p.s. we’re hiring)
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Stupid Shell Tricks with Apache Accumulo

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Transcript of "Stupid Shell Tricks with Apache Accumulo"

  1. 1. 1 Stupid Shell Tricks With Apache Accumulo Mike Drob madrob@cloudera.com @mikhaildrob
  2. 2. About Mike 2 • Dev at Cloudera (~ 6 months) • Accumulo Committer (~ 1 year) • LEGO® Engineer (~ 20 years) http://upload.wikimedia.org/wikipedia/commons/0/00/LEGO_Minifigure_skating_through_town.jpg
  3. 3. Survey 3 • Who knows… • Who this guy is? • That 1.6.0 is released! • Who has… • Used Accumulo? • Used the Shell? http://en.wikipedia.org/wiki/File:Concentration_Hugh_Downs_1961.JPG
  4. 4. 4 http://en.wikipedia.org/wiki/File:Bubalus_mindorensis_by_Gregg_Yan_01.jpg
  5. 5. New Shell Features 5 • Password Indirection • Command Interruption • History Search/Expansion • Provide Extensions http://www.flickr.com/photos/cygnus921/2581020296/
  6. 6. Password Indirection 6 • Providing password on command line is BAD • …but typing long passwords is hard. • Exposed to ps and other tools • Solution: provide alternate sources • File on disk • Environment Variable • Custom Tokens
  7. 7. Command Interruption 7 • Long running commands are a pain. • Ctrl-C used to kill the whole shell… • Now it just kills the current command! https://www.flickr.com/photos/smaedli/3271558744/
  8. 8. History Search/Expansion 8 • Many bash-similarities • Ctrl-R to search history • Use ! To expand commands http://en.wikipedia.org/wiki/File:Trilobite_Ordovicien_8127.jpg
  9. 9. 9
  10. 10. 10 Thank You! Mike Drob, Cloudera @mikhaildrob (p.s. we’re hiring)
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