[bash/en] Fixed formatting for The Black Hole

- [x] I solemnly swear that this is all original content of which I am the original author
- [x] Pull request title is prepended with `[language/lang-code]`
- [x] Pull request touches only one file (or a set of logically related files with similar changes made)
- [x] Content changes are aimed at *intermediate to experienced programmers* (this is a poor format for explaining fundamental programming concepts)
- [x] If you've changed any part of the YAML Frontmatter, make sure it is formatted according to [CONTRIBUTING.md](https://github.com/adambard/learnxinyminutes-docs/blob/master/CONTRIBUTING.markdown)
  - [x] Yes, I have double-checked quotes and field names!
This commit is contained in:
Harry Mumford-Turner 2017-10-02 14:10:53 +01:00 committed by GitHub
parent 2a0ec06f94
commit 4f86cfaa44

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@ -15,6 +15,7 @@ contributors:
- ["Leo Rudberg", "https://github.com/LOZORD"]
- ["Betsy Lorton", "https://github.com/schbetsy"]
- ["John Detter", "https://github.com/jdetter"]
- ["Harry Mumford-Turner", "https://github.com/harrymt"]
filename: LearnBash.sh
---
@ -235,10 +236,8 @@ EOF
python hello.py < "input.in" # pass input.in as input to the script
python hello.py > "output.out" # redirect output from the script to output.out
python hello.py 2> "error.err" # redirect error output to error.err
python hello.py > "output-and-error.log" 2>&1 # redirect both output and
# errors to output-and-error.log
python hello.py > /dev/null 2>&1 # redirect all output and errors to
# the black hole, /dev/null, i.e., no output
python hello.py > "output-and-error.log" 2>&1 # redirect both output and errors to output-and-error.log
python hello.py > /dev/null 2>&1 # redirect all output and errors to the black hole, /dev/null, i.e., no output
# The output error will overwrite the file if it exists,
# if you want to append instead, use ">>":
python hello.py >> "output.out" 2>> "error.err"