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Cut a string for last 8 characters

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# 1  
Old 08-26-2013
Cut a string for last 8 characters
Hello All

I have a file like this

Code:
abc.tpt.ctl
bdc.tpt.ctl
cdw.tpt.ctl

I have looped every line using the for Loop, now I want to take each line and cut the .tpt.ctl part of it and store it in a variable and use the variable in same loop.

The part I am stuck at is how do I cut the last 8 characters of each line or a single line using cut command
# 2  
Old 08-26-2013
awk solution
Using awk

Code:
awk '{print substr($0,length($0)-7)}' filename

This User Gave Thanks to krishmaths For This Post:
nnani
# 3  
Old 08-26-2013
Try:
Code:
for i in *.tpt.ctl
do
  var=${i%.tpt.ctl}
  printf "%s\n" "$var"
done

This User Gave Thanks to Scrutinizer For This Post:
nnani
# 4  
Old 08-26-2013
Or using sed:

sed 's/\(.*\).\{8\}$/\1/' file
Last edited by Subbeh; 08-26-2013 at 05:03 AM..
This User Gave Thanks to Subbeh For This Post:
nnani
# 5  
Old 08-26-2013
@krishmaths
Simpler approach
Code:
awk -F. '{print $1}'

But why do it complicate, when we can do it the Scrutinizer way Smilie
This User Gave Thanks to Jotne For This Post:
nnani
# 6  
Old 08-26-2013
Code:
echo abc.tpt.ctl | rev | cut -c 9- | rev
abc
 
bash-3.2$ cat x
abc.tpt.ctl
bdc.tpt.ctl
cdw.tpt.ctl
bash-3.2$ cat x | rev | cut -c 9- | rev
abc
bdc
cdw

This User Gave Thanks to MR.bean For This Post:
nnani
# 7  
Old 08-26-2013
Hello,

My loop is like this

Code:
TPT_PATH='/home/ctl/tpt'
CP_PATH='/home/ctl/copy'

for line in filelist.txt ;
do
  if [ -f $TPT_PATH/$line ]
     then
     echo "###################################################################################################" >> $CP_PATH/$line

The problem is when i write the echo statement into the file the file is named as .tpt.ctl, instead i need it to be .copy.vsql
So I want to put a variable inside this loop which takes maiden name of file without .tpt.ctl and then I can use the variable in echo statement >> $CP_PATH/$variable.copy.vsql

---------- Post updated at 01:36 PM ---------- Previous update was at 01:27 PM ----------

Thanks Mr Bean,

The solution worked for me.

Thanks you all.
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