knowledge/awesome-cheatsheets
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Merge pull request #3 from ss18/awesome-changes

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Awesome changes
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Julien Le Coupanec 2018-02-04 16:29:36 +00:00 committed by GitHub
commit 1b7838f0e6
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1 changed files with 6 additions and 6 deletions
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languages/bash.sh
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@ -154,7 +154,7 @@ ${#array[i]} # to find out the length of any element in the arra
${#array[@]} # to find out how many values there are in the array ${#array[@]} # to find out how many values there are in the array
declare -a # the variables are treaded as arrays declare -a # the variables are treaded as arrays
declare -f # uses funtion names only declare -f # uses function names only
declare -F # displays function names without definitions declare -F # displays function names without definitions
declare -i # the variables are treaded as integers declare -i # the variables are treaded as integers
declare -r # makes the variables read-only declare -r # makes the variables read-only
@ -175,9 +175,9 @@ ${variable//pattern/string} # the longest match to pattern in variable is repla
${#varname} # returns the length of the value of the variable as a character string ${#varname} # returns the length of the value of the variable as a character string
*(patternlist) # matches zero or more occurences of the given patterns *(patternlist) # matches zero or more occurrences of the given patterns
+(patternlist) # matches one or more occurences of the given patterns +(patternlist) # matches one or more occurrences of the given patterns
?(patternlist) # matches zero or one occurence of the given patterns ?(patternlist) # matches zero or one occurrence of the given patterns
@(patternlist) # matches exactly one of the given patterns @(patternlist) # matches exactly one of the given patterns
!(patternlist) # matches anything except one of the given patterns !(patternlist) # matches anything except one of the given patterns
@ -333,7 +333,7 @@ n<&- # closes the input from file descripor n
# To suspend a job, type CTRL+Z while it is running. You can also suspend a job with CTRL+Y. # To suspend a job, type CTRL+Z while it is running. You can also suspend a job with CTRL+Y.
# This is slightly different from CTRL+Z in that the process is only stopped when it attempts to read input from terminal. # This is slightly different from CTRL+Z in that the process is only stopped when it attempts to read input from terminal.
# Of course, to interupt a job, type CTRL+C. # Of course, to interrupt a job, type CTRL+C.
myCommand & # runs job in the background and prompts back the shell myCommand & # runs job in the background and prompts back the shell
@ -411,7 +411,7 @@ trap dbgtrap DEBUG # causes the trap code to be executed before every statement
trap - DEBUG # turn off the DEBUG trap trap - DEBUG # turn off the DEBUG trap
function returntrap { function returntrap {
echo "A return occured" echo "A return occurred"
} }
trap returntrap RETURN # is executed each time a shell function or a script executed with the . or source commands finishes executing trap returntrap RETURN # is executed each time a shell function or a script executed with the . or source commands finishes executing