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#!/usr/bin/env bash
# Local locate, store DB in user directory.
# Update on run if older than configured.
set -euo pipefail
DEFAULT_LLOCATE_DB_PATH=$HOME/.cache/locate.db
DEFAULT_LLOCATE_DB_AGE=1day
LLOCATE_DB_PATH=${LLOCATE_DB_PATH:-$DEFAULT_LLOCATE_DB_PATH}
LLOCATE_DB_AGE=${LLOCATE_DB_AGE:-$DEFAULT_LLOCATE_DB_AGE}
usage() {
cat <<EOF
Usage: ${0##*/} [-h|-u] [locate options] term
Perform locate for given term.
Options:
-u force updatedb
-h show this help
Envirinment variances:
LLOCATE_DB_PATH path to databas file (default: $DEFAULT_LLOCATE_DB_PATH)
LLOCATE_DB_AGE period after which database need to update,
in date string format (default: $DEFAULT_LLOCATE_DB_AGE)
EOF
exit 1
}
update() {
updatedb --require-visibility 0 --output "$LLOCATE_DB_PATH"
}
is_database_old() {
local threshold db_mtime
threshold=$(date -d "-$LLOCATE_DB_AGE" +%s)
db_mtime=$(date -r "$LLOCATE_DB_PATH" +%s)
if [ "$threshold" -gt "$db_mtime" ]; then
return 0
fi
return 1
}
main() {
if [ $# -eq 0 ]; then
usage
fi
while :; do
case "$1" in
-u)
update
shift
;;
-h) usage ;;
*) break ;;
esac
done
if is_database_old; then
update
fi
locate --database "$LLOCATE_DB_PATH" "$@" | ${PAGER:-less}
}
main "$@"
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