linux - Changing a line in multiple files -


i have many files, file0 file3100. want add ### 1 line in each file.

the line

generated trjconv : pteg1 t= 8100.00000

should be

###generated trjconv : pteg1 t= 8100.00000

the time (t) in each file different. how can add ### each file in once , time (t) still same in each file before adding?

here tried:

#!/bin/bash  # loop inp files in current dir framefile in frame*.inp;     sed -i -r -e 's/generated trjconv : pteg-1 t=.+/###generated trjconv : pteg-1 t=.+/g' ${framefile} fi done

a simple perl 1 liner job:

perl -pi -e 's/generated trjconv : pteg1 t=/###$&/' file*

this replace generated trjconv : pteg1 t= ###generated trjconv : pteg1 t= within files have names begining file


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