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Shell Programming and Scripting

Search a String for characters - or +

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# 1  
Old 03-31-2011
Search a String for characters - or +
How would I accomplish this if I want to test to see if it

1) starts with a dash so something like "-R"

AND

2) starts with 1 character then either a "-" or "+" and then up to 3 characters such as "a+rx"
# 2  
Old 03-31-2011
1) start with dash
Code:
/^-/

2) starts with 1 character then either a "-" or "+" and then up to 3 characters such as "a+rx"

Code:
/^.[-+].{1,3}/

---------- Post updated at 11:31 PM ---------- Previous update was at 11:31 PM ----------

1) start with dash
Code:
/^-/

2) starts with 1 character then either a "-" or "+" and then up to 3 characters such as "a+rx"

Code:
/^.[-+].{1,3}/

This User Gave Thanks to kurumi For This Post:
mkjp2011
# 3  
Old 03-31-2011
Code:
case "$string" in
    -?) echo "Starts with a dash" ;;
    ?[-+]?|?[-+]??|?[-+]???) echo "char -/+ char(s)" ;;
esac

# 4  
Old 03-31-2011
The second statement you had does not seem to work.

I am using it with this statement

Code:
echo $test | egrep "^.[-+].{1-3}"

---------- Post updated at 12:38 AM ---------- Previous update was at 12:37 AM ----------

Nevermind, was using a dash instead of a comma in the {1,3}
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