Linux 如何grep，然后从分隔的列文件中剪切？
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How to grep, then cut from a delimited column file?
提问by Andrew Tsay
I have a file with multiple rows, each row delimited with |into multiple columns.
I can grep for a certain row, and I can cut for a certain column, but I can't figure out how to do both.
我有一个多行的文件，每行分隔|成多列。我可以对某一行进行 grep，也可以对某一列进行剪切，但我不知道如何同时进行。
grep '^1001' customer
grabs rows starting with 1001, from a file named customer
从名为 customer 的文件中抓取以 1001 开头的行
cut -d "|" -f 3 customer
cuts column 3 from all the rows in customer file.
从客户文件中的所有行中剪切第 3 列。
So....
所以....
grep '^1001' customer | cut -d "|" -f 3 customer
采纳答案by NPE
Simply omit the filename when you call cutand it'll use the output of grepas its input:
调用时只需省略文件名cut，它将使用的输出grep作为其输入：
grep 1001 customer | cut -d "|" -f 3
It is also worth noting that grep 1001doesn't grab rows starting with 1001; it grabs rows containing1001.
还值得注意的是，grep 1001不会抓取以 1001 开头的行；它抓取包含1001 的行。
回答by anubhava
Better use ask for this task like this and avoid multiple commands with pipe:
更好地使用这样的任务请求并避免使用管道的多个命令：
awk -F "|" '==1001{print }' customer
