How to print only word with "_" or @ of a file?

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Why awk print is strange when I set FS = " " instead of FS = "\t"?

Look at the following data file（cou.data） which has four fields separated by tab. Four fields are country name, land area, population, continent where it belongs. As for country name or continent name which has two words, two words are separated by space. (Data are not accurately...

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Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone...

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Perl - How to print a "carriage return" to an output file?

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Explain the line "mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`"

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Shell Programming and Scripting