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take all characters from end to start till a fullstop

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Top Forums Shell Programming and Scripting take all characters from end to start till a fullstop
# 1  
Old 09-02-2010
Tools take all characters from end to start till a fullstop
e.g. "hello.all" to be transformed to "all" Smilie
# 2  
Old 09-02-2010
It depends how many dots your string has, and whether you want to keep only the last portion, or delete only the first portion.

i.e.
Code:
echo hello.all | sed "s/.*\.//"
all

echo hello.all.reallyall | sed "s/.*\.//"
reallyall

echo hello.all.reallyall | sed "s/[^\.]*.//"
all.reallyall

If you are reading from a variable, as opposed to a file, then you can do it in the shell:

Code:
$ X=hello.all.reallyall

$ echo ${X##*.}
reallyall

$ echo ${X#*.} 
all.reallyall

This User Gave Thanks to Scott For This Post:
hakermania
# 3  
Old 09-02-2010
hmmmm...This is a problem to me, but as ll my file extensions (ogg mp3 wav) contain only 3 characters ech, i think I'll use this UNIX.COM - EXTRACTING LAST 3 CHARS
# 4  
Old 09-02-2010
Quote:
Originally Posted by hakermania
hmmmm...This is a problem to me, but as ll my file extensions (ogg mp3 wav) contain only 3 characters ech, i think I'll use this UNIX.COM - EXTRACTING LAST 3 CHARS
Great!

Until you get a .mpeg file Smilie
This User Gave Thanks to Scott For This Post:
hakermania
# 5  
Old 09-02-2010
or Smilie
Code:
# echo "hello.all" | grep -ow "..."
all

This User Gave Thanks to ygemici For This Post:
hakermania
# 6  
Old 09-02-2010
My program allow only the selection of mp3 ogg and wav
# 7  
Old 09-03-2010
Code:
echo "hello.all"|cut -d \. -f2
echo "hello.all"|awk -F\. '{print $NF}'

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