Linux empty and delete large file commands of the specified size

Find large files

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Find/dir-size +100m-exec LS-LH {}\;

If you want to delete files larger than 50M directly, use the command

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find/var/mail/-size +50m-exec rm {}\;

If you want to empty out some text file class things, you can use the

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echo "" >/www.111cn.net/xxx.log

This command can achieve the same effect as echo >/var/log/big.log, but after the command is executed, you need to end with Ctrl + D

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Clear >/opt/log/big.log

This command empties the contents of the Big.log file without deleting the file
The same effect, with true, Flase, ":" And so on can also achieve empty the contents of the file, without deleting the effect of the file

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True >/opt/log/big.log Flase >/opt/log/big.log : >/opt/log/big.log

If you want to delete a file, simply use the RM command

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Rm-f/opt/log/big.log

If you want to sort folders and files, you can use the

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Du-s * | Sort-nr | Head

add two easy ways to use

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Cat/dev/null > Files to be emptied > The files to be emptied

These commands are handy, but use caution to avoid emptying important files.