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[root@sistem1lnx ~]# cat google
google
[root@sistem1lnx ~]# ./script google
g
go
goo
goog
googl
google


cat script
#!/bin/bash
xcount=$( (cat google | grep -o "." | wc -l) )
for i in...

fold -w1 file | perl -nle 'push @x, $_; print @x'

awk '{s="";for(i=1;i<=NF;i++)print s=s$i}' FS= infile

$> awk '{for(x=1;x<=length($0);x++){print substr($0,0,x)}}' file
g
go
goo
goog
googl
google


Your post looks a bit like homework, if this is the case obeye the forum rules for posting...