UNIX for Advanced & Expert Users

I have a long string in ASCII file of approx 60k bytes file size.

I need to know
1.How many charcters are adjectly in string.

export MAX_COL_SIZE=`awk "length>max{max=length}END{print max}" test.txt`

this return file cann't open...can anyone advice why??

2. How many 'TRX consist in my string.

My String is typical structure like
HED+aa+aa'TRX+aa+aa+aa+aa'TRN+aa+aa+aa'TRN+aa+aa+aa'END

That means one HED and one END, in between there are multiple TRX in the string.

I'm not sure this is what you want, it it sounds like it may be:
Length of a string (one generic way):

Code:

len=`echo "$bigstring" | wc -c`

number of TRX in the string:

Code:

trx_count=`echo "$bigstring"| grep -c 'TRX'`