Shulou(Shulou.com)06/01 Report--

This article is about how to use basic commands in linux. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

1.xargs is commonly used

Xargs-L1-P5-I

Line, thread,-I naming

2.wait wait

Wait for all the processes in the main script to finish before continuing to run

Function await () {for pid in $(jobs-p) do wait $pid | | exit 1 done} 3. View the catalog

Check the du of the directory size (how much is used)

Du-sh directory occupancy size

Total capacity of df-h used

4.shell gets the difference (intersection and union) of two files.

The best sort a b b | uniq-u to find the intersection

Intersection

The default output of the comm command is three columns, the first column is Amurb (in A but not in B), the second column is BMY A, and the third column is A to B. -1 means that the first column is not displayed, and so on.

Comm-12 A.txt B.txt or cat a b | sort | uniq-d > c # c is an intersect b intersection

If An and B are out of order, you can use the following command

Comm

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.