bash awk 搜索多行记录文件的多个字段
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awk search on multiple fields of a multi line record file
提问by adaptive
I have a file with records that are of the form:
我有一个包含以下形式的记录的文件：
SMS-MT-FSM-DEL-REP
country: IN
1280363645.979354_PFS_1_1887728354
SMS-MT-FSM-DEL-REP
country: IN
1280363645.729309_PFS_1_1084296392
SMS-MO-FSM
country: IR
1280105721.484103_PFM_1_1187616097
SMS-MO-FSM
country: MO
1280105721.461090_PFM_1_882824215
This lends itself to parsing via awk using something like: awk 'BEGIN { FS="\n"; RS="" } /country:.*MO/ {print $0}'
这有助于通过 awk 使用以下内容进行解析： awk 'BEGIN { FS="\n"; RS="" } /country:.*MO/ {print $0}'
My question is how do I use awk to search the records on 2 separate fields? For example I only want to print out records that have a country of MO AND whos record first line is SMS-MO-FSM ?
我的问题是如何使用 awk 搜索 2 个单独字段的记录？例如，我只想打印国家为 MO 且其记录第一行是 SMS-MO-FSM 的记录？
采纳答案by ghostdog74
if you have set FS="\n", and RS="", then the first field $1 would be SMS-MO-FSM. Therefore your awk code is
如果您已设置 FS="\n" 和 RS=""，则第一个字段 $1 将是 SMS-MO-FSM。因此你的 awk 代码是
awk 'BEGIN{FS="\n"; RS=""} ~/country.*MO/ && ~/SMS-MO-FSM/ ' file
回答by schot
(I post this as a separate answer instead of a comment reply for better formatting)
（我将此作为单独的答案发布而不是评论回复以获得更好的格式）
Concerning your second remark about printing a record on a single line: When you don't modify your records OFSand ORShave no effect. Only when you change $0or one of the fields awkwill recompute NFand reconstruct $0based on $1 OFS $2 OFS ... $NF ORS. You can force this reconstruction like this:
关于在一行上打印记录的第二个评论：当您不修改记录OFS并且ORS没有效果时。只有当您更改$0或领域之一awk将重新计算NF和重建$0基础$1 OFS $2 OFS ... $NF ORS。您可以像这样强制进行此重建：
BEGIN {
FS = "\n"
RS = ""
OFS = ";" # Or another delimiter that does not appear in your data
ORS = "\n"
}
~ /^[ \t]*country:[ \t]*MO[ \t]*$/ && ~ /^[ \t]*SMS-MO-FSM[ \t]*$ {
= "" # This forces the reconstruction
print
}
