原文
interface eth-0-11
description ct:TengXun-11
interface eth-0-12
description ct:TengXun-12
interface eth-0-13
description ct:TengXun-13
interface eth-0-14
description ct:TengXun-14
interface eth-0-15
description ct:TengXun-15
interface eth-0-16
description ct:TengXun-16
interface eth-0-17
description ct:TengXun-17
interface eth-0-18
description ct:TengXun-18
interface eth-0-19
description ct:TengXun-19
interface eth-0-20
description ct:TengXun-20
命令及结果
cat aa.txt|sed -r 's/ct:(.*)/\1-OC1-60G-N/g'
interface eth-0-11
description TengXun-11-OC1-60G-N
interface eth-0-12
description TengXun-12-OC1-60G-N
interface eth-0-13
description TengXun-13-OC1-60G-N
interface eth-0-14
description TengXun-14-OC1-60G-N
interface eth-0-15
description TengXun-15-OC1-60G-N
interface eth-0-16
description TengXun-16-OC1-60G-N
interface eth-0-17
description TengXun-17-OC1-60G-N
interface eth-0-18
description TengXun-18-OC1-60G-N
interface eth-0-19
description TengXun-19-OC1-60G-N
interface eth-0-20
description TengXun-20-OC1-60G-N
