Bash 使用awk在文件中搜索

我需要像散列一样搜索文件。想知道awk是否是正确的解决方案

输入示例：

bla   123.123.123.0
# This line should be a comment
ble      www.ble.com
bli  <random whitespace> ::1
blo   anything

和搜索（ble）

我希望这对于

awk

---

编辑：改进了输入格式的描述

不太清楚格式。。。这个怎么样

$ awk '/^[^#]/{print $1}/www/{print $2}' input.txt
bla
ble
www.ble.com
bli
blo

或“两种不同的输出：

/^[^#]/ {
    k[$1]++
}
/www/ {
    w[$2]++
}

END {
    print "keys:"
    for (x in k)
        print "\t"x
    print "urls:"
    for (x in w)
        print "\t"x

}

输出：

$ awk -f keys.awk input.txt
keys:
    bla
    ble
    bli
    blo
urls:
    www.ble.com

这样的一种方式（要求不太清楚）：

获取密钥：

kent$  grep -oP "^\w+(?= )" file
bla
ble
bli
blo

如果你想让它们和awk排成一行

kent$  awk 'NR!=2{printf $1" "}' test
bla ble bli blo 

---

您期望的确切输出是什么？

$ awk '!/^#/{a[$1]=$2}END{print a[x];}' x='ble' file
www.ble.com

kent$  grep -oP "^\w+(?= )" file
bla
ble
bli
blo

kent$  awk 'NR!=2{printf $1" "}' test
bla ble bli blo