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# Liger : Disk Spaces
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There are 3 distinct disk spaces available for each project: HOME, DATA, SCRATCH.
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Each space has specific characteristics suitable to its usage which are described below. The paths to access these spaces are stocked in five variables of the shell environment: `$HOME`, `$DATADIR`, `$SCRATCHDIR`.
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To know how much the disk spaces are occupied for your project, you can use Ligers's local commands `Mybalance` and `myquota`.
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## The HOME
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`$HOME` : This is the home directory during an interactive connection login by SSH. This space is intended for frequently-used small-sized files such as the shell environment files, the tools, and potentially the sources and libraries if they have a reasonable size. The size of this space is limited (in space and in number of files).
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The HOME characteristics are:
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- It is a permanent and private space.
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- Intended to receive small-sized files.
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- Submitted to quota per user which are intentionally rather low (10 GiB by default) and not extendable.
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- It is the home directory during an interactive connection.
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- Accessible in interactive or in a batch job via the `$HOME` variable :
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$ cd $HOME
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