diff options
Diffstat (limited to 'bash.html.markdown')
| -rw-r--r-- | bash.html.markdown | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/bash.html.markdown b/bash.html.markdown index 0385c46d..856db706 100644 --- a/bash.html.markdown +++ b/bash.html.markdown @@ -11,13 +11,15 @@ contributors: - ["Rahil Momin", "https://github.com/iamrahil"] - ["Gregrory Kielian", "https://github.com/gskielian"] - ["Etan Reisner", "https://github.com/deryni"] - - ["Jonathan Wang", "https://github.com/Jonathansw"] + - ["Jonathan Wang", "https://github.com/Jonathansw"] - ["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"] - ["Martin Nicholson", "https://github.com/mn113"] filename: LearnBash.sh +translators: + - ["Dimitri Kokkonis", "https://github.com/kokkonisd"] --- Bash is a name of the unix shell, which was also distributed as the shell @@ -67,7 +69,7 @@ echo '$Variable' # => $Variable # Parameter expansion ${ }: echo ${Variable} # => Some string # This is a simple usage of parameter expansion -# Parameter Expansion gets a value from a variable. +# Parameter Expansion gets a value from a variable. # It "expands" or prints the value # During the expansion time the value or parameter can be modified # Below are other modifications that add onto this expansion @@ -87,7 +89,7 @@ echo ${Variable: -5} # => tring echo ${#Variable} # => 11 # Default value for variable -echo ${Foo:-"DefaultValueIfFooIsMissingOrEmpty"} +echo ${Foo:-"DefaultValueIfFooIsMissingOrEmpty"} # => DefaultValueIfFooIsMissingOrEmpty # This works for null (Foo=) and empty string (Foo=""); zero (Foo=0) returns 0. # Note that it only returns default value and doesn't change variable value. @@ -244,7 +246,7 @@ cp -r srcDirectory/ dst/ # recursively copy # `mv` is also useful for renaming files! mv s0urc3.txt dst.txt # sorry, l33t hackers... -# Since bash works in the context of a current directory, you might want to +# Since bash works in the context of a current directory, you might want to # run your command in some other directory. We have cd for changing location: cd ~ # change to home directory cd # also goes to home directory @@ -280,7 +282,7 @@ for line in sys.stdin: EOF # Variables will be expanded if the first "EOF" is not quoted -# Run the hello.py Python script with various stdin, stdout, and +# Run the hello.py Python script with various stdin, stdout, and # stderr redirections: python hello.py < "input.in" # pass input.in as input to the script @@ -322,7 +324,7 @@ rm -r tempDir/ # recursively delete # current directory. echo "There are $(ls | wc -l) items here." -# The same can be done using backticks `` but they can't be nested - +# The same can be done using backticks `` but they can't be nested - #the preferred way is to use $( ). echo "There are `ls | wc -l` items here." @@ -442,8 +444,8 @@ grep "^foo.*bar$" file.txt | grep -v "baz" # and not the regex, use fgrep (or grep -F) fgrep "foobar" file.txt -# The `trap` command allows you to execute a command whenever your script -# receives a signal. Here, `trap` will execute `rm` if it receives any of the +# The `trap` command allows you to execute a command whenever your script +# receives a signal. Here, `trap` will execute `rm` if it receives any of the # three listed signals. trap "rm $TEMP_FILE; exit" SIGHUP SIGINT SIGTERM |