rm command importance

 2. To delete all files with the exception of filename1 and filename2:

$ rm -v !("filename1"|"filename2") 

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    *(pattern-list) – matches zero or more occurrences of the specified patterns

    ?(pattern-list) – matches zero or one occurrence of the specified patterns

    +(pattern-list) – matches one or more occurrences of the specified patterns

    @(pattern-list) – matches one of the specified patterns

    !(pattern-list) – matches anything except one of the given patterns

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    * – matches zero or more characters

    ? – matches any single character

    [seq] – matches any character in seq

    [!seq] – matches any character not in seq

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3. The example below shows how to remove all files other than all .zip files interactively:

$ rm -i !(*.zip)

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4. Next, you can delete all files in a directory apart from all .zip and .odt files as follows, while displaying what is being done:

$ rm -v !(*.zip|*.odt)

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. Using a pipeline and xargs, you can modify the case above as follows:

$ find . -type f -not -name '*gz' -print0 | xargs -0  -I {} rm -v {}

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diag_alert_500.log

you can do = rm diag_alert_*.log

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--------------------------------------### Mostly successful command ###-------------------------------

find /path/to/folder -mtime +90 -exec rm {} +

find /path/to/folder -mtime +90 -delete

find /path/to/folder -mtime +90 -print