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variables in ksh


 
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# 8  
Old 04-17-2002
Code:
variable=$something       # variable has some characters -- we don't know how many
rest=${variable#???}      # we removed the first 3 characters 
first3=${variable%$rest}  # now we have the first 3 characters

This works as long as the variable has at least 3 characters in it. If it has only one or two, first3 will be empty.
# 9  
Old 04-17-2002
awesome, Perderabo. And it works embedded too:
Code:
first3=${variable%${variable#???}}

Jimbo
# 10  
Old 04-18-2002
Good call, Perderabo and Jimbo!

I love the Korn/Bourne-Again shells!

inpavan, you can read a little more about those over here:
https://www.unix.com/unix-for-advanced-and-expert-users/4542-what-does-means.html?s=

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