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I want to remove 1st and last two characters of each line of the file

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Top Forums Shell Programming and Scripting I want to remove 1st and last two characters of each line of the file
# 1  
Old 08-05-2015
I want to remove 1st and last two characters of each line of the file
I want to remove 1st and last two characters of each line of the file

Ex: file1

Code:
zzfile1ee
@xfile2:y
 qfile3>>
@ file4yy

and redirect to the file called new

Basically file will have any charcter including space, spical character...

Please help....
Last edited by Don Cragun; 08-05-2015 at 08:12 AM.. Reason: Add CODE and ICODE tags.
# 2  
Old 08-05-2015
Any attempts from your side?
# 3  
Old 08-05-2015
Is this a homework assignment. Homework assignments must be submitted in the Homework & Coursework Questions forum and must contain a completely filled out homework template.
# 4  
Old 08-05-2015
Quote:
Originally Posted by RudiC
Any attempts from your side?
yes I tried below code.....

Code:
while read line
do
      value=`echo $line |cut -c3-`
      echo ${value%??} >>new
      sleep 1
done<file1

Moderator's Comments:
Mod Comment Please use CODE tags when displaying sample input, output, and code segments as required by forum rules.
Last edited by Don Cragun; 08-05-2015 at 11:23 PM.. Reason: Add CODE tags.
# 5  
Old 08-05-2015
Code:
while read line; do
    line="${line#??}"
    line="${line%??}"
    echo "$line"
done < file1 > new

or
Code:
perl -anlF"" -e 'print @F[2..$#F-2]' file1 > new

or
Code:
perl -pe 's/^..(.*)..$/$1/' file1 > new

or
Code:
perl -nl -e 'print substr($_, 2, -2)' file1 > new

Last edited by Aia; 08-06-2015 at 05:32 PM..
# 6  
Old 08-05-2015
Hi shell1509,
It looks like you had working code and Aia showed you a method for doing it three other ways (although none of Aia's suggestions do what you requested, hopefully they show you how it could be done more efficiently than invoking cut for each line read from your input file).

Before we mark this thread solved, you might want to ask yourself what is supposed to happen if an input line contains less than four characters? And, do any of the suggestions provided so far do what you want in that case?
# 7  
Old 08-06-2015
Longhand, quick and dirty, assumes a string length greater than 3 characters.
OSX 10.7.5, default bash terminal...
Code:
Last login: Thu Aug  6 21:09:11 on ttys000
AMIGA:barrywalker~> txt=' FILE1-+'
AMIGA:barrywalker~> text='#FILE2&*'
AMIGA:barrywalker~> echo "${txt:1:$((${#txt}-3))}"
FILE1
AMIGA:barrywalker~> echo "${text:1:$((${#text}-3))}"
FILE2
AMIGA:barrywalker~> _

EDIT:
Due to ambiguity in the OP's original post this assumes first TWO and last two characters.
Code:
AMIGA:barrywalker~> txt=' \FILE1-+'
AMIGA:barrywalker~> text='#$FILE2&*'
AMIGA:barrywalker~> echo "${txt:2:$((${#txt}-4))}"
FILE1
AMIGA:barrywalker~> echo "${text:2:$((${#text}-4))}"
FILE2
AMIGA:barrywalker~> _

Last edited by wisecracker; 08-06-2015 at 05:27 PM.. Reason: See above...
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