Shell Programming and Scripting

sed 's/DM.*CT/DMCT/'

$ echo "qwertyDM&^%#|#!\/?CTabc" | sed 's/DM.*CT/DMCT/'
qwertyDMCTabc
$ echo "qwertyDM&^%#|#!\/?CTthis will be removed tooCTabc" | sed 's/DM.*CT/DMCT/'
qwertyDMCTabc

#!/usr/bin/perl


$str='DM&^%#|#!\/?CT';

$str =~ s/(\w+)(.+?)(\w+)/$1$3/;

print $str,"\n";

#!/usr/bin/perl


#$str='DM&^%#|#!\/?CT';

$str='DM**&^*$#)(*CT';
$str =~ s/(\w+)(.+?)(\w+)/$1$3/;

print $str,"\n";

cat file | sed 's/\[[]!@#$%^&\*(){}",.><~`\]*//g' | sed "s/'*//g" > file.nospecialchar

/usr/bin/tr -d '[:punct:]' < file > file.nospecialchar

[root@sistem1lnx /]# cat file
DM&^%#|#!**&^*$#)(*\/?\/|*`~!$&^%#|#!\/?CT

[root@sistem1lnx /]# sed 's/[[:punct:]][[:punct:]]*//g' file
DMCT

sed 's/[[:punct:]][[:punct:]]*//g' file