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https://github.com/notwa/rc
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16 lines
387 B
Bash
Executable File
16 lines
387 B
Bash
Executable File
#!/usr/bin/env sh
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# YES_ZSH YES_BASH YES_DASH YES_ASH
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days() { ### @-
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### compute the number of days since a given date.
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###
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### ```
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### $ days 'January 1 1970'
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### 18838
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### ```
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[ $# -le 1 ] || { printf "%s\n" "$0: too many arguments" >&2; return 1; }
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echo $(( ($(date +%s) - $(date -d "$1" +%s)) / 60 / 60 / 24 ))
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}
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[ -n "${preload+-}" ] || days "$@"
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