Shulou(Shulou.com)06/02 Report--

To merge the following two files, merge them together into 1.txt

# 1.txtJerry 20Alice 30David 40# 2.txtJerry manAlice womanDavid 40

Merged 1.txt

Jerry 20 man

Alice 30 woman

David 40

If the characteristics of the above files are the same, they will be merged, and the second column lacks content. This time the use of join-A1 1.txt 2.txt can be very good to achieve the goal.

[root@host ~] # join-A1 1.txt 2.txtJerry 20 manAlice 30 womanDavid 40mura: in addition to displaying the matching lines, display the matching lines in the specified serial number (1 or 2) file-1: match with the FIELD field in file1

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