diff options
Diffstat (limited to 'bash.html.markdown')
| -rw-r--r-- | bash.html.markdown | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/bash.html.markdown b/bash.html.markdown index 76710aa8..0c097c27 100644 --- a/bash.html.markdown +++ b/bash.html.markdown @@ -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 --- @@ -55,7 +56,7 @@ Variable= 'Some string' # => returns error: "Some string: command not found" # Using the variable: echo $Variable # => Some string echo "$Variable" # => Some string -echo '$Variable' # => Some string +echo '$Variable' # => $Variable # When you use the variable itself — assign it, export it, or else — you write # its name without $. If you want to use the variable's value, you should use $. # Note that ' (single quote) won't expand the variables! @@ -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" |