--In the temporary directory creation that is usually used in the shell, the following points have been improved.
--Duplicate names may occur due to direct specification such as mkdir / tmp / path.
--It is not safe in terms of security because it is specified directly.
--It needs to be easy to use and versatile in the process by making the name unique and adding relevance.
--Therefore, this time we will describe how to create a unique, safe and versatile tmp directory.
--First, as a result, write the following contents in the prepared shell file.
index.sh
#!/bin/bash
basepath=$(basename $0)
timestamp=$(date +%Y%m%d%H%M%S)
tmpd=$(mktemp -dt "$basepath.$timestamp.$$")/
echo $tmpd
#output
# $TMPDIR/index.sh.20200919152709.XXXX.XXXXX/
--After writing, execute it multiple times, check the creation to the output path and non-duplicate names, and complete.
--By using the ** mktemp ** command to create a directory, a file or directory of size 0 is automatically created. --Click here for details on how to use mktemp Reference
--Use the t (template) option, which is an option specific to this command, when creating with mktemp.
--By doing so, it will be automatically created in the path set in $ TMPDIR without describing the directory name.
-** * When searching for the set tmp storage location, search with ʻecho $ TMPDIR** -** * If not set, specify directly with-p or store in / tmp` **
--Add something related to the name to make it easier to use when processing in the program. ――The minimum items added are as follows. --Execution path name --Timestamp (time)
――From the above, Linux has many commands to solve problems as standard, so I reconfirmed the importance of remembering and combining even one of them. ――Although it is necessary to consider safety, at the same time, I realized the importance of awareness of ease of use and versatility of processing in the program.
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