in reply to Re^2: Access and modify specific element of tab delimited .txt file
in thread Access and modify specific element of tab delimited .txt file

Is there a way for it to simply check for any string (non-delimiter character) at all?

Eily called it right:

C:\test>type junk.dat
        A       B       C       D       E
A       1       1       1       1       1
B       1       1       1       1       1
C       1       1       1       1       1
D       1       1       1       1       1
E       1       1       1       1       1

C:\test>perl -F\t -plae"$.== 1 and $F[0] eq '' and $_ = 'ID' . $_" jun
+k.dat
ID      A       B       C       D       E
A       1       1       1       1       1
B       1       1       1       1       1
C       1       1       1       1       1
D       1       1       1       1       1
E       1       1       1       1       1

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