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17 lines
596 B
17 lines
596 B
#!/bin/sh
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# This will ensure that entries only appear once (for the most
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# recent time in the sequence) in ~/.directory_history. This
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# loses a lot of history, so be sure it's what you want. For
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# the moment, my use case for that file is basic the h() function
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# in ~/.sh_common for navigating dirs, so this is fine.
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# Will totally break if a filename contains a newline.
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# See moreutils for sponge(1).
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# reverse order,
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# print only the first instance of a line,
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# reverse order again,
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# write back to the file
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tac ~/.directory_history | unsorted-unique | tac | sponge ~/.directory_history
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