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edited Jul 21, 2015 at 8:24

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Use single quotes instead of double quotes:

alias rdir='mkdir -p ./$(cat /dev/randomurandom | tr -cd 'a-z0-9' | head -c 8)/'

Now, the statement is evaluated every time the alias is called. With double quotes the statement is evaluated, when defining the alias, therefore static.

Also a simpler solution to create a random directory inside the current working directory would be to use mktemp:

alias rdir='mktemp -d --tmpdir=./'

Use single quotes instead of double quotes:

alias rdir='mkdir -p ./$(cat /dev/random | tr -cd 'a-z0-9' | head -c 8)/'

Now, the statement is evaluated every time the alias is called. With double quotes the statement is evaluated, when defining the alias, therefore static.

Use single quotes instead of double quotes:

alias rdir='mkdir -p ./$(cat /dev/urandom | tr -cd 'a-z0-9' | head -c 8)/'

Now, the statement is evaluated every time the alias is called. With double quotes the statement is evaluated, when defining the alias, therefore static.

Also a simpler solution to create a random directory inside the current working directory would be to use mktemp:

alias rdir='mktemp -d --tmpdir=./'

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answered Jul 21, 2015 at 8:14

chaos

49.3k
11
127
147

Use single quotes instead of double quotes:

alias rdir='mkdir -p ./$(cat /dev/random | tr -cd 'a-z0-9' | head -c 8)/'

Now, the statement is evaluated every time the alias is called. With double quotes the statement is evaluated, when defining the alias, therefore static.