Understand, they ask, do not mind Made before the problems have not been solved and continue to help : 1. Perfectly matched in the text to find out how the string, such as : W|grep ttyp1 |awk '{print $ objects' The results ttyp1 ttyp10 ttyp11 ttyp12 : : how can only ttyp1. 2. When a complex Lane consists of two words, "", in which the "" \ front to achieve at tropes. If abc= "`db2 \" select. . . From. . . \ "|grep. . . `" However, when the three - to or have to, "", the website tropes \ invalid formula wrong. How to achieve a sentence Lane contains n "." Answer 1. W|grep "ttyp1$" |awk '{print $ objects' Answer 2 Abc= "`db2 \" select. . . From. . \ "|grep. . . `" Answer 2 Add one or two to see deeds --> When ttyp1 not constant but a variable, such $TTY that : W|grep "$TTY$" |awk '{print $ objects' established? The answer is no! You help us to see --> Will spend $ grep is the end of things. Ttyp1 constant is estimated unbearable. Can try W|awk 'print{ $ 0 "and" $ 2)' | grep "$TTY$" | awk. . . . . [ Closed window ]