mirror of
https://github.com/notwa/rc
synced 2024-11-05 06:49:03 -08:00
17 lines
388 B
Bash
Executable file
17 lines
388 B
Bash
Executable file
#!/usr/bin/env sh
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# YES_ZSH
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# YES_BASH
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# YES_DASH
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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 "$1" +%s)) / 60 / 60 / 24 ))
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}
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[ "${SOURCING:-0}" -gt 0 ] || days "$@"
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