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Hi


$ cat file
8 abc def
9 abc def
10 abc fed
11 def abc

Command:
$ awk '$1>9' file > file1

Output file:
$ cat file1
10 abc fed
11 def abc

awk '1;/ccd/{exit}' file
sed '/ccd/q' file

$ awk '/ccd/{print;exit}1' test.txt
aab
bbc
ccd

awk -v PAT="ccd" 'BEGIN { printf("match pattern '%s'\n\n", PAT); }; $0 ~ PAT { P=1 } P'