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2025-01-25 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >
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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
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