looking for a single line command to search for line above and print line + 1

[smik]

Hi

looking for a single line command to search for line and print line immediately above
plus the second line, third line and fourth line above

awk '/search_for_string/{x=$0;next}{print x";"$0;}'

Thanks in advance

Mik

 

[feherke]

Hi

From your code I deduce that you want each set of matches on one line, separated with semicolon, including the matched line itself.

awk '/search_for_string/{for(i=0;i<4;i++)printf"%s;",a[(i+NR)%4];print}{a[NR%4]=$0}'

Feherke.
feherke.ga

 

[smik]

Hi Feheke, Thank you for the one liner much appreciated