Jednoduchý poznámkovač

.bashrc.d/40_notes.sh

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+# --- enable/disable this file ---
+SRC_ENABLED=true
+
+case "$SRC_ENABLED" in
+	1|true|yes|on) unset SRC_ENABLED ;;           # enabled — clean up and continue
+	*) unset SRC_ENABLED; return ;;                # disabled — clean up and skip this file
+esac
+# ---------------------------------
+
+#!/bin/bash
+# Simple one-line notes manager
+# Compatible with bash 3.x (RHEL 5) and bash 4.1 (Debian Squeeze)
+# NOTE: this file must be SOURCED, not executed:
+#   . ./notes.sh
+#   source ./notes.sh
+
+NOTES_FILE="${NOTES_FILE:-$HOME/.notes}"
+
+note_add() {
+    if [ $# -eq 0 ]; then
+        echo "Usage: note_add <text of note>" >&2
+        return 1
+    fi
+    echo "$*" >> "$NOTES_FILE"
+}
+
+notes() {
+    case "$1" in
+        -h|--help)
+            echo "Usage: notes"
+            echo "  List all saved notes with their line numbers."
+            echo ""
+            echo "Related commands:"
+            echo "  note_add <text>          Add a new note"
+            echo "  note_rm <line_number>    Remove a note by its number"
+            echo ""
+            echo "Notes are stored in: $NOTES_FILE"
+            return 0
+            ;;
+    esac
+
+    if [ ! -f "$NOTES_FILE" ] || [ ! -s "$NOTES_FILE" ]; then
+        echo "No notes yet."
+        return 0
+    fi
+    awk '{ printf "%d: %s\n", NR, $0 }' "$NOTES_FILE"
+}
+
+note_rm() {
+    num="$1"
+
+    if [ -z "$num" ]; then
+        echo "Usage: note_rm <line_number>" >&2
+        return 1
+    fi
+
+    if ! echo "$num" | grep -Eq '^[0-9]+$'; then
+        echo "Error: line number must be a positive integer" >&2
+        return 1
+    fi
+
+    if [ ! -f "$NOTES_FILE" ]; then
+        echo "Error: notes file not found" >&2
+        return 1
+    fi
+
+    total=$(wc -l < "$NOTES_FILE" | tr -d ' ')
+
+    if [ "$num" -lt 1 ] || [ "$num" -gt "$total" ]; then
+        echo "Error: no note with that number" >&2
+        return 1
+    fi
+
+    sed -i "${num}d" "$NOTES_FILE"
+    echo "Deleted note $num"
+}

.notes

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+alt + . # Cykluje parametry předchozích příkazů
+^ck^kc^ # Nahradí ck za kc v předchozím příkazu a provede ho
+!! # Předchozí příkaz
+alias fuck="sudo $(history -p !!)" # Antistresové použití !!
+mkdir -p tst/{1,2,3} # Vytvoří podadresáře 1 2 3 v adresáři tst
+mkdir -ṕ tst/{1..10} # Vytvoří podadresáře 1 - 10 v adresáři tst