hi all 

perl -i -pe 's/\.mbh_succ_roam_i_vlr_e_plmn/\.new_mbh_succ_roam_i_vlr_
+e_plmn/g' <input_file>

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file content,
__DATA__
.mbh_succ_roam_i_vlr_e_plmn   next
.mbh_succ_roam_i_vlr_e_plmn1  first
.mbh_succ_roam_i_vlr_e_plmn2  verify

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when I run the perl oneliner with the input file all 3 lines are getting changed. what is the change should I need to make to change only first line. In other words how can I change the code to affect only if the word matches neglecting the rest of lines.

In reply to regex change should be applied in iputfile by Anonymous Monk

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