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#!/bin/sh
# Deletes log files older than 7 days from ~/.local/var/log
# Services (hyprland, waybar, dunst, hypridle, gammastep) create a new
# timestamped log file per session. Without cleanup these accumulate.
#
# Uses the date embedded in filenames (service-YYYY-MM-DD-HHMMSS.log)
# rather than mtime, because long-running sessions keep mtime fresh
# even on old log files.
#
# Intended to run daily via crontab.
LOG_DIR="$HOME/.local/var/log"
DAYS=7
[ -d "$LOG_DIR" ] || exit 0
cutoff=$(date -d "$DAYS days ago" +%Y%m%d)
for f in "$LOG_DIR"/*.log; do
[ -f "$f" ] || continue
# Extract YYYY-MM-DD from filename, or fall back to an embedded
# _<10-digit-epoch>_ (used by hyprland-runtime logs which lack a
# human-readable date in the filename). Skip files with neither.
name=$(basename "$f")
filedate=$(echo "$name" | grep -oP '\d{4}-\d{2}-\d{2}' | head -1)
if [ -z "$filedate" ]; then
epoch=$(echo "$name" | grep -oP '_\K[0-9]{10}(?=_)' | head -1)
[ -n "$epoch" ] && filedate=$(date -d "@$epoch" +%Y-%m-%d 2>/dev/null)
fi
[ -n "$filedate" ] || continue
# Skip files still being written to (modified in the last 24h).
# This prevents deleting active logs from long-running sessions.
[ -n "$(find "$f" -maxdepth 0 -mtime 0)" ] && continue
# Compare as integers: YYYYMMDD
filedate_num=$(echo "$filedate" | tr -d '-')
if [ "$filedate_num" -lt "$cutoff" ]; then
rm -f "$f"
fi
done
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