Search Results

Many tools have case insensitivity and forward reference in their regex. Regular expressions have many flavors and extensions. For instance, this sed finds such:sed -in '
:loop
$d
/\\$/{
...

This problem seems easier to me in awk than in sed:
awk -F" *:" '$1=="" {next}
{ if(list[toupper($1)]++)
printf("%s on line %d has been seen %d times\n",
...

Hi, I get:

$ variable=first; awk 'tolower($0)~tolower(s),/end:/' s="$variable" infile
FIRST:\
one
two
three
end:
$ variable=SECOND; awk 'tolower($0)~tolower(s),/end:/' s="$variable" infile...

what is your output?

@Scrutinizer's code is correct to me..
because of this code converts to lower (or upper ) for any input (does not matter if it is lower case or upper)
and if it matches then...