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Variable substr

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Justin Campbell
2014-02-28 11:24:45 -05:00
parent 31b5427774
commit 1b67b8f230
1 changed files with 4 additions and 0 deletions
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@@ -46,6 +46,10 @@ echo '$VARIABLE'
echo ${VARIABLE/Some/A} echo ${VARIABLE/Some/A}
# This will substitute the first occurance of "Some" with "A" # This will substitute the first occurance of "Some" with "A"
# Substring from a variable
echo ${VARIABLE:0:7}
# This will return only the first 7 characters of the value
# Default value for variable # Default value for variable
echo ${FOO:-"DefaultValueIfFOOIsMissingOrEmpty"} echo ${FOO:-"DefaultValueIfFOOIsMissingOrEmpty"}
# This works for null (FOO=), empty string (FOO=""), zero (FOO=0) returns 0 # This works for null (FOO=), empty string (FOO=""), zero (FOO=0) returns 0