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lang-c
x||y||z||...means "if x OR y OR z OR ... were True" then do something.x&&y&&z&&...means "if x AND y AND z AND ... all were True" then do something."True" means a result of an expression or condition evaluated true. I believe you strongly need to start first reading some basics of awk commnad.rg 'Dansk|Norsk|Svenska' file3command which return ` Subtitle: 04, Language: da - Dansk, Content: Undefined, Stream id: 0x23,` but now myawkidea return the matched line and the next line. I only want matched line. now I don't know how to improve it.awk '/Dansk/{a=1}/Norsk/{b=1}/Svenska/{c=1}{ if (a || b || c ) print NR, $0}'you can just doawk '/Dansk|Norsk|Svenska/{print NR, $0}', but I really don't know what are you trying to do here at all. what is your question and goal now?