regex - Parse file for specific word in line -


in directory there several files pattern

simulation_y_t

for files pattern need check whether in last line of file word hgip comesup or not ...the word might not separated spaces surrounding characters if comes come within last 20 characters of line...

the last line of file might (if shall removed)

((((1560:0.0129775,(1565:0.00473242,1447:0.00473242):0.00824512):0.0133245,((((1421:0.00357462,(1496:0.00352733,1472:0.00352733):4.72931e-05):0.00597691,1505:0.00955153):0.0104055,((((1465:0.00716479,(1527:0.00380709,1556:0.00380709):0.0033577):0.000984333,(1555:0.00381533,((1423:0.00169525,1411:0.00169525):0.00168847,1587:0.00338372):0.00043161):0.00433379):0.00159571,((1546:0.000908968,1584:0.000908968):0.00775293,(1492:0.00374859,1489:0.00374859):0.00491332):0.00108293):0.00962105,1594:0.0193659):0.000591157):0.00510731,(1442:0.0198716,(1525:0.00416688,(1550:0.00378343,1544:0.00378343):0.000383449):0.0157047):0.00519277):0.00123765):0.000318786,(1538:0.00713072,1530:0.00713072):0.0194901):0.000325926,((1483:0.00663734,1484:0.00663734):0.00471454,(1518:0.00352348,(1433:0.000365709,1450:0.000365709):0.00315777):0.0078284):0.0155948):0.00081517,1561:0.0277619):0.00127735):0.00271069hgip: 77113

note numbers , way brackets coudl diffferent in every of files whether these 4 characters appear in row in line ... if line shall removed file

how able that?

this should easy 

sed '/hgip/d' yourfile

this delete lines 'hgip' inside

for checking last line 

sed '${/hgip/d}' yourfile

this delete last line if 'hgip' inside it


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