Claude Code — Status Line

brew install jq

mkdir -p ~/.claude
cat > ~/.claude/statusline.sh <<'SCRIPT'
#!/bin/bash
# Claude Code status line — macOS
INPUT=$(cat)
json() { echo "$INPUT" | jq -r "$1" 2>/dev/null; }

# ---- Claude Code data --------------------------------------------------
MODEL=$(json '.model.display_name // .model.id // "Claude"')
CURRENT_DIR=$(json '.workspace.current_dir // .cwd // empty')
[ -z "$CURRENT_DIR" ] && CURRENT_DIR="$PWD"
PROJECT=$(basename "$CURRENT_DIR")

CONTEXT=$(printf "%.0f" "$(json '.context_window.used_percentage // 0')" 2>/dev/null)
[[ "$CONTEXT" =~ ^[0-9]+$ ]] || CONTEXT=0

COST=$(json '.cost.total_cost_usd // 0')
[[ "$COST" =~ ^[0-9]+([.][0-9]+)?$ ]] || COST=0

# ---- Git ---------------------------------------------------------------
GIT=""
if git -C "$CURRENT_DIR" rev-parse --is-inside-work-tree >/dev/null 2>&1; then
  BRANCH=$(git -C "$CURRENT_DIR" branch --show-current 2>/dev/null)
  [ -z "$BRANCH" ] && BRANCH="detached"
  if [ -n "$(git -C "$CURRENT_DIR" status --porcelain 2>/dev/null)" ]; then
    GIT="🌿 ${BRANCH}*"
  else
    GIT="🌿 ${BRANCH}"
  fi
fi

# ---- Context bar + colours --------------------------------------------
RESET="\033[0m"; GREEN="\033[32m"; YELLOW="\033[33m"; RED="\033[31m"

BAR_WIDTH=10
FILLED=$((CONTEXT * BAR_WIDTH / 100))
[ "$FILLED" -gt "$BAR_WIDTH" ] && FILLED=$BAR_WIDTH
CONTEXT_BAR=""
for ((i=0; i<FILLED; i++)); do CONTEXT_BAR="${CONTEXT_BAR}█"; done
for ((i=FILLED; i<BAR_WIDTH; i++)); do CONTEXT_BAR="${CONTEXT_BAR}░"; done

if   [ "$CONTEXT" -ge 90 ]; then CONTEXT_COLOR="$RED"
elif [ "$CONTEXT" -ge 70 ]; then CONTEXT_COLOR="$YELLOW"
else CONTEXT_COLOR="$GREEN"; fi

# ---- CPU (macOS: top) --------------------------------------------------
# user% + sys% = active CPU for the whole machine (not per core).
CPU=$(top -l 1 -n 0 2>/dev/null | awk '/CPU usage:/ {
  for (i=1; i<=NF; i++) {
    if ($i ~ /user/) { gsub("%","",$(i-1)); u=$(i-1) }
    if ($i ~ /sys/)  { gsub("%","",$(i-1)); s=$(i-1) }
  }
  printf "%.0f", u + s
}')
CPU=${CPU:-0}
[ "$CPU" -gt 100 ] && CPU=100

# ---- RAM (macOS: sysctl + vm_stat) ------------------------------------
# used = active + wired + compressed - purgeable - speculative
TOTAL_BYTES=$(sysctl -n hw.memsize 2>/dev/null); TOTAL_BYTES=${TOTAL_BYTES:-0}
VMSTAT=$(vm_stat 2>/dev/null)
PAGE_SIZE=$(echo "$VMSTAT" | head -1 | awk '{print $8}' | tr -d '.'); PAGE_SIZE=${PAGE_SIZE:-4096}
pages() { echo "$VMSTAT" | awk -v k="$1" -v f="$2" '$0 ~ k {gsub("\\.","",$f); print $f}'; }
ACTIVE=$(pages "Pages active" 3);                  ACTIVE=${ACTIVE:-0}
WIRED=$(pages "Pages wired down" 4);               WIRED=${WIRED:-0}
COMPRESSED=$(pages "occupied by compressor" 5);    COMPRESSED=${COMPRESSED:-0}
PURGEABLE=$(pages "Pages purgeable" 3);            PURGEABLE=${PURGEABLE:-0}
SPECULATIVE=$(pages "Pages speculative" 3);        SPECULATIVE=${SPECULATIVE:-0}

USED_PAGES=$((ACTIVE + WIRED + COMPRESSED))
[ "$USED_PAGES" -gt "$PURGEABLE" ]   && USED_PAGES=$((USED_PAGES - PURGEABLE))
[ "$USED_PAGES" -gt "$SPECULATIVE" ] && USED_PAGES=$((USED_PAGES - SPECULATIVE))
USED_BYTES=$((USED_PAGES * PAGE_SIZE))
SCRIPT

sudo apt update && sudo apt install -y jq git

mkdir -p ~/.claude
cat > ~/.claude/statusline.sh <<'SCRIPT'
#!/bin/bash
# Claude Code status line — Ubuntu / Linux
INPUT=$(cat)
json() { echo "$INPUT" | jq -r "$1" 2>/dev/null; }

# ---- Claude Code data --------------------------------------------------
MODEL=$(json '.model.display_name // .model.id // "Claude"')
CURRENT_DIR=$(json '.workspace.current_dir // .cwd // empty')
[ -z "$CURRENT_DIR" ] && CURRENT_DIR="$PWD"
PROJECT=$(basename "$CURRENT_DIR")

CONTEXT=$(printf "%.0f" "$(json '.context_window.used_percentage // 0')" 2>/dev/null)
[[ "$CONTEXT" =~ ^[0-9]+$ ]] || CONTEXT=0

COST=$(json '.cost.total_cost_usd // 0')
[[ "$COST" =~ ^[0-9]+([.][0-9]+)?$ ]] || COST=0

# ---- Git ---------------------------------------------------------------
GIT=""
if git -C "$CURRENT_DIR" rev-parse --is-inside-work-tree >/dev/null 2>&1; then
  BRANCH=$(git -C "$CURRENT_DIR" branch --show-current 2>/dev/null)
  [ -z "$BRANCH" ] && BRANCH="detached"
  if [ -n "$(git -C "$CURRENT_DIR" status --porcelain 2>/dev/null)" ]; then
    GIT="🌿 ${BRANCH}*"
  else
    GIT="🌿 ${BRANCH}"
  fi
fi

# ---- Context bar + colours --------------------------------------------
RESET="\033[0m"; GREEN="\033[32m"; YELLOW="\033[33m"; RED="\033[31m"

BAR_WIDTH=10
FILLED=$((CONTEXT * BAR_WIDTH / 100))
[ "$FILLED" -gt "$BAR_WIDTH" ] && FILLED=$BAR_WIDTH
CONTEXT_BAR=""
for ((i=0; i<FILLED; i++)); do CONTEXT_BAR="${CONTEXT_BAR}█"; done
for ((i=FILLED; i<BAR_WIDTH; i++)); do CONTEXT_BAR="${CONTEXT_BAR}░"; done

if   [ "$CONTEXT" -ge 90 ]; then CONTEXT_COLOR="$RED"
elif [ "$CONTEXT" -ge 70 ]; then CONTEXT_COLOR="$YELLOW"
else CONTEXT_COLOR="$GREEN"; fi

# ---- CPU (Linux: /proc/stat) ------------------------------------------
# /proc/stat holds counters since boot, so take two samples 0.3 s apart
# and compute the busy share of the delta.
read -r _ u1 n1 s1 i1 w1 q1 sq1 _ < /proc/stat
sleep 0.3
read -r _ u2 n2 s2 i2 w2 q2 sq2 _ < /proc/stat
IDLE=$(( (i2 + w2) - (i1 + w1) ))
TOTAL=$(( (u2 + n2 + s2 + i2 + w2 + q2 + sq2) - (u1 + n1 + s1 + i1 + w1 + q1 + sq1) ))
if [ "$TOTAL" -gt 0 ]; then CPU=$(( (TOTAL - IDLE) * 100 / TOTAL )); else CPU=0; fi

# ---- RAM (Linux: /proc/meminfo) ---------------------------------------
# used = MemTotal - MemAvailable (the same figure `free` reports as "used").
TOTAL_KB=$(awk '/^MemTotal:/ {print $2}' /proc/meminfo);     TOTAL_KB=${TOTAL_KB:-0}
AVAIL_KB=$(awk '/^MemAvailable:/ {print $2}' /proc/meminfo); AVAIL_KB=${AVAIL_KB:-0}
TOTAL_BYTES=$((TOTAL_KB * 1024))
USED_BYTES=$(( (TOTAL_KB - AVAIL_KB) * 1024 ))
SCRIPT