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cut subsrting from string depending on pattern

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# 1  
Old 08-04-2008
cut subsrting from string depending on pattern
Dears,
i'm glad to be a member of this big UNIXer's group Smilie ,hoping to be one of'm.



my question:
how i get the subsrting ahmad "from" the string ".ahmad." for example ??

Thank you all.
# 2  
Old 08-04-2008
try:
Code:
str=".ahmad."
echo $str | cut -d '.' -f2

# 3  
Old 08-04-2008
i really appreciate ur answer, but this resulted in the following:

ahmad.

while i want only ahmad with no dot in the end
# 4  
Old 08-04-2008
echo $str | awk -F"." '{print $2}'
# 5  
Old 08-04-2008
Quote:
Originally Posted by Muslem_it
[...]
my question:
how i get the subsrting ahmad "from" the string ".ahmad." for example ??
It depends on which shell you're using and on what exactly you want to achieve: remove the dots or remove the first and the last char.
Consider the following:

[zsh]

Code:
% s=.ahmad.
% print $s:gs/.//
ahmad

Code:
% print ${${s#?}%?}
ahmad

[bash/ksh93]

Code:
$ s=.ahmad.
$ printf "%s\n" "${s//.}"
ahmad

Code:
$ printf "%.*s\n" $((${#s}-2)) "${s#?}"
ahmad

# 6  
Old 08-04-2008
Quote:
Originally Posted by Muslem_it
i really appreciate ur answer, but this resulted in the following:

ahmad.

while i want only ahmad with no dot in the end
Very surprising!
Works fine on my AIX box and my PC (with cygwin).

If you have problem with the cut solution, use the awk solution.

And another way (for the fun) :
Code:
expr "$str" : '.*\.\(.*\).'

Jean-Pierre.
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