updated ubu bash

2026-01-24 01:41:04 +00:00
parent 42110273f8
commit 8209b70b7c
2 changed files with 195 additions and 0 deletions
--- a/ubuntu/bashrc.txt
+++ b/ubuntu/bashrc.txt
@@ -0,0 +1,106 @@
+# ~/.bashrc
+
+# 1. Non-interactive shell check
+[[ $- != *i* ]] && return
+
+# 2. Path Helper (Prevents the "Mega-String" path pollution)
+# This function only adds a directory if it isn't already there.
+path_add() {
+    if [ -d "$1" ] && [[ ":$PATH:" != *":$1:"* ]]; then
+        export PATH="$1:$PATH"
+    fi
+}
+
+# Reset to a sane baseline then add your custom paths safely
+export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+path_add "$HOME/.local/bin"
+path_add "/usr/local/sbin"
+path_add "$HOME/bin"
+
+path_add "$HOME/go/bin"
+path_add "/snap/go/current/bin"
+
+export SDKMAN_DIR="$HOME/.sdkman"
+[[ -s "$SDKMAN_DIR/bin/sdkman-init.sh" ]] && source "$SDKMAN_DIR/bin/sdkman-init.sh"
+
+# 3. History Settings (Security Audit Optimized)
+HISTCONTROL=ignoredups:ignorespace
+shopt -s histappend
+HISTSIZE=10000
+HISTFILESIZE=20000
+export HISTTIMEFORMAT="%F %T " # Essential for incident response/forensics
+PROMPT_COMMAND="history -a" # Save immediately after every command
+
+# 4. Prompt & Shell Behavior
+shopt -s checkwinsize
+if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
+    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
+else
+    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
+fi
+
+# 5. Completions
+if [ -f /etc/bash_completion ]; then
+    . /etc/bash_completion
+fi
+complete -cf sudo
+
+# 6. Load Aliases
+if [ -f ~/.bash_aliases ]; then
+    . ~/.bash_aliases
+fi
+
+# 7. NVM Setup (Loaded after Path to avoid conflicts)
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"
+
+# 8. Login Dashboard
+echo -e "\n\e[1;32m--- Welcome Jared (Zappy) ---\e[0m"
+echo "External IP: $(curl -4 -s --max-time 2 https://ifconfig.me || echo 'Offline')"
+echo "Space left: $(df -h / | awk 'NR==2 {print $4}')"
+echo -e "\n\e[1;34mQuick Commands:\e[0m"
+
+# Filter: Remove internal bash functions (_) and NVM internals
+(
+  alias | cut -d'=' -f1 | cut -d' ' -f2;
+  declare -F | cut -d' ' -f3 | grep -vE '^(_|nvm|path_add|start_ssh_agent|__)'
+) | sort | xargs echo
+echo ""
+
+# --- Auto-activate Python .venv on cd ---
+# Activates ./\.venv when present; deactivates when leaving that project tree.
+# Safe for interactive shells only (your .bashrc already returns early for non-interactive).
+
+_venv_auto_activate() {
+    local venv_path="$PWD/.venv"
+
+    # If we are already in a venv, but we've left its project directory, deactivate it.
+    if [[ -n "${VIRTUAL_ENV:-}" ]]; then
+        # If current dir is NOT under the venv's parent dir, deactivate.
+        local venv_parent
+        venv_parent="$(dirname "$VIRTUAL_ENV")"   # .../.venv
+        venv_parent="$(dirname "$venv_parent")"   # project root
+        case "$PWD/" in
+            "$venv_parent"/*) ;;  # still inside the project
+            *)
+                deactivate 2>/dev/null || true
+            ;;
+        esac
+    fi
+
+    # If no venv active (or we just deactivated), and this directory has a .venv, activate it.
+    if [[ -z "${VIRTUAL_ENV:-}" && -f "$venv_path/bin/activate" ]]; then
+        # shellcheck disable=SC1090
+        source "$venv_path/bin/activate"
+    fi
+}
+
+# Wrap cd so it triggers venv auto-activation.
+cd() {
+    builtin cd "$@" || return
+    _venv_auto_activate
+}
+
+# Also run once for the starting directory when the shell launches.
+_venv_auto_activate