我正在尝试合并电子邮件列表,但我想uniq
(或uniq -i -u
)的电子邮件地址而不是整个行的名称,这样我们就不会重复。
列表1:
Company A <companya@companya.com>
Company B <companyb@companyb.com>
Company C <companyc@companyc.com>
列表2:
firstname lastname <firstname@gmail.com>
Fake Person <companyb@companyb.com>
Joe lastnanme <joe@gmail.com>
当前输出为
Company A <companya@companya.com>
Company B <companyb@companyb.com>
Company C <companyc@companyc.com>
firstname lastname <firstname@gmail.com>
Fake Person <companyb@companyb.com>
Joe lastnanme <joe@gmail.com>
所需的输出将是
Company A <companya@companya.com>
Company B <companyb@companyb.com>
Company C <companyc@companyc.com>
firstname lastname <firstname@gmail.com>
Joe lastnanme <joe@gmail.com>
(两者中都列出了companyb@companyb.com
)
我该怎么做?
答案 0 :(得分:4)
指定文件格式
$ awk -F'[<>]' '!a[$2]++' files
将在尖括号中打印第一个重复内容的实例。或者,如果电子邮件后没有内容,则无需解开尖括号
$ awk '!a[$NF]++' files
sort
也可以完成
$ sort -t'<' -k2,2 -u files
将根据需要(或不需要)对副作用进行排序。
N.B。对于这两种选择,假设尖括号都没有出现在电子邮件包装器之外的其他地方。
答案 1 :(得分:3)
这是awk中的一个:
$ awk '
match($0,/[a-z0-9.]+@[a-z.]+/) { # look for emailish string *
a[substr($0,RSTART,RLENGTH)]=$0 # and hash the record using the address as key
}
END { # after all are processed
for(i in a) # output them in no particular order
print a[i]
}' file2 file1 # switch order to see how it affects output
输出
Company A <companya@companya.com>
Company B <companyb@companyb.com>
Company C <companyc@companyc.com>
Joe lastnanme <joe@gmail.com>
firstname lastname <firstname@gmail.com>
脚本查找非常简单的电子邮件字符串(*请参见脚本中的正则表达式,并根据自己的喜好对其进行调整),该字符串用于散列整个记录,因为较早的实例被覆盖,最后一个实例获胜。
答案 2 :(得分:3)
uniq
有一个-f
选项,可以忽略多个以空格分隔的字段,因此我们可以对第三个字段进行排序,然后忽略前两个字段:
$ sort -k 3,3 infile | uniq -f 2
Company A <companya@companya.com>
Company B <companyb@companyb.com>
Company C <companyc@companyc.com>
firstname lastname <firstname@gmail.com>
Joe lastnanme <joe@gmail.com>
但是,这不是很可靠:电子邮件地址前没有确切两个字段时,它就会中断,因为排序将放在错误的字段上,而uniq
将比较错误的字段。< / p>
检查karakfa的答案,看看这里什至不需要uniq
。
或者,仅检查最后一个字段的唯一性:
awk '!e[$NF] {print; ++e[$NF]}' infile
或更短的是,从awk '!e[$NF]++' infile
答案 3 :(得分:2)
请您尝试以下。
awk '
{
match($0,/<.*>/)
val=substr($0,RSTART,RLENGTH)
}
FNR==NR{
a[val]=$0
print
next
}
!(val in a)
' list1 list2
说明: :添加了上述代码的说明。
awk ' ##Starting awk program here.
{ ##Starting BLOCK which will be executed for both of the Input_files.
match($0,/<.*>/) ##Using match function of awk where giving regex to match everything from < to till >
val=substr($0,RSTART,RLENGTH) ##Creating variable named val whose value is substring of current line starting from RSTART to value of RLENGTH, basically matched string.
} ##Closing above BLOCK here.
FNR==NR{ ##Checking condition FNR==NR which will be TRUE when 1st Input_file named list1 will be read.
a[val]=$0 ##Creating an array named a whose index is val and value is current line.
print $0 ##Printing current line here.
next ##next will skip all further statements from here.
}
!(val in a) ##Checking condition if variable val is NOT present in array a if it is NOT present then do printing of current line.
' list1 list2 ##Mentioning Input_file names here.
输出如下。
Company A <companya@companya.com>
Company B <companyb@companyb.com>
Company C <companyc@companyc.com>
firstname lastname <firstname@gmail.com>
Joe lastnanme <joe@gmail.com>
答案 4 :(得分:0)
也许我不明白这个问题!
但是你可以尝试这个awk:
awk 'NR!=FNR && $3 in a{next}{a[$3]}1' list1 list2