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	til - annna - Annna the nice friendly bot.
	git clone git://bitreich.org/annna/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws6…
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	---
	til (1459B)
	---
	1 #!/bin/sh
	2
	3 nick="${1}"
	4 learned="${2}"
	5 tilmodbase="$HOME/bin/modules/til"
	6 tildb="${tilmodbase}/til.txt"
	7
	8 # Make sure there's a file to store the TILs.
	9 if [ ! -f "${tildb}" ];
	10 then
	11 mkdir -p "${tilmodbase}"
	12 touch "${tildb}"
	13 fi
	14
	15 # Make sure file is writable.
	16 if [ ! -w "${tildb}" ];
	17 then
	18 exit 1
	19 fi
	20
	21 # Clean up the learned string.
	22 learned="$(printf "%s" "${learned}" \
	23 \| tr -d [:cntrl:] \
	24 \| sed 's,\n, ,g')"
	25
	26 # Check to see if its already been learned.
	27 already_learned_entry="$(grep -m 1 "${learned}" "${tildb}")"
	28 if [ $? -eq 0 ]; # Match found (grep exit status of 0)
	29 then
	30 timestamp="$(printf "%s" "${already_learned_entry}" \
	31 \| tr "\t" "\n" \
	32 \| tail -n 1)"
	33 user="$(printf "%s" "${already_learned_entry}" \
	34 \| tr "\t" "\n" \
	35 \| head -n 1)"
	36 learned_text="$(printf "%s" "${already_learned_entry}" \
	37 \| tr "\t" "\n" \
	38 \| tail -n 2 \
	39 \| head -n 1)"
	40 paste="$(printf '%s\n%s learned %s\n' \
	41 '${timestamp}' \
	42 '${user}' \
	43 '${learned_text}' \
	44 \| /br/bin/bitreich-paste)"
	45 printf "looks like that's already been learned by %s on %s! %s" \
	46 "${user:-someone}" \
	47 "$(date -d "${timestamp}" +"%B %d, %Y")" \
	48 '${paste}'
	49 exit
	50 fi
	51
	52 # Add the new TIL to the database.
	53 timestamp=$(date -u)
	54 printf "%s\n" "${nick} ${learned} $(date -u)" \
	55 >> "${tildb}"
	56
	57 # Count users TILs
	58 til_count="$(grep -cP "^${nick}\t" "${tildb}")"
	59
	60 # Successful return message.
	61 printf "well done! You've learned ${til_count} things so far! o.o"
	62 exit 0