shell脚本之awk基本用法

脚本文件：

[email protected]:/study/shell# cat awk_test.sh
#!/bin/sh

awk_test_fun()
{
	echo "\$0:"
	echo $0
	echo "\$1:"
	echo $1
	echo "\$2:"
	echo $2
	echo "\$3:"
	echo $3
	echo "awk_test.txt content:"
	cat awk_test.txt
	echo "result of:'akw -F\" \" \'/^aaa/{print \$1,\$2,\$3}\' awk_test.txt"
	awk -F" " '/^aaa/{print $1,$2,$3}'  awk_test.txt
}

awk_test_fun hello world good
[email protected]:/study/shell# 

测试文件awk_test.txt:

[email protected]:/study/shell# cat awk_test.txt
aaa bbb ccc
ddd eee fff
111 222 333

执行结果：

[email protected]:/study/shell# ./awk_test.sh

$0:

./awk_test.sh

$1:

hello

$2:

world

$3:

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#