awk basic usage of shell scripts

Script file:

[Email protected]:/study/shell# cat awk_test.sh #!/bin/shawk_test_fun () {echo "\$0:" Echo $0echo "\$1:" Echo $1echo "\$2:" Echo $2echo "\$3:" Echo $3echo "Awk_test.txt content:" Cat Awk_test.txtecho "result of: ' akw-f\" \ "\ '/^aaa/{print \$1,\$2,\ $3}\ ' Awk_test.txt "awk-f" "'/^aaa/{print $1,$2,$3} '  

Test file Awk_test.txt:

[Email protected]:/study/shell# cat awk_test.txt aaa bbb cccddd Eee fff111 222 333

Execution Result:

[Email protected]:/study/shell#./awk_test.sh
$:
./awk_test.sh
$:
Hello
$:
World
$ $:
Good
Awk_test.txt content:
AAA BBB CCC
DDD Eee FFF
111 222 333
Result of: ' akw-f ' "\ '/^aaa/{print $1,$2,$3}\ ' awk_test.txt
AAA BBB CCC
[Email protected]:/study/shell#

awk basic usage of shell scripts