linux - Replace the first word in a line with a word from the previous line -

linux - Replace the first word in a line with a word from the previous line -

i have text this

replace: c 1: usa - replace: sn 1: garlapati

for each line starting replace: utilize next word replace first word on next line (which 1 in case):

replace: c c: usa - replace: sn sn: garlapati

this line should do:

awk -f': *' -v ofs=": " '$1=="replace"{r=$2;print;next}r{$1=r;r=""}7' file

test input:

kent$ cat f replace: c 1: usa - replace: sn 1: garlapati kent$ awk -f': *' -v ofs=": " '$1=="replace"{r=$2;print;next}r{$1=r;r=""}7' f replace: c c: usa - replace: sn sn: garlapati

linux shell unix awk sed