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hcql / Types.md
Created August 9, 2022 02:18 — forked from kevinblumenfeld/Types.md

Credit: Mark Kraus
Website: https://get-powershellblog.blogspot.com

Collection Type Guidence

When to use what

  • Use Arrays if you know the element types and have a fixed length and/or known-up-front collection size that will not change.
  • Use ArrayList if you have an unkown collection size with either unknown or mixed type elements.
  • Use a Generic List when know the type of the elements but not the size of the collection.
  • Use a HashTable if you are going to do key based lookups on a collection and don't know the object type of the elements.
  • Use a Dictionary<TKey, TValue> you are going to do key based lookups on a collection and you know the type of the elements.
  • Use a HashSet when you know the type of elements and just want unique values and quick lookups and assignmnets.
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hcql / linux_find_size_modified_date_and_remove_files.sh
Created February 28, 2020 08:41 — forked from joostvanveen/linux_find_size_modified_date_and_remove_files.sh
Linux commands to find all files modified older than a certain date or time, remove, find largest files or folder in a human readable way.
## NOTE: when finding file by time, use one of the following flags:
# ctime : the time a file was changed, in hours. On most systems this timestamp cannot be altered by any user, so it is fairly reliable
# atime : the time a file was last accessed, in hours. This is also set by the system.
# mtime : the modified time of a file, in hours. This can be set by any user. So if you are looking for mailcious files, never use this flag.
# cmin : same as mtime, but in minutes.
# amin : same as atime, but in minutes.
# mmin : same as mtime, but in minutes.
# Find all files in current directory changed more than 8 hours ago (480 minutes)
find $PWD -mindepth 1 -type f -cmin +480