<commit_before># Special Variables

Following table 

| Varialbe | Usage |
|----------|-------|
| `$@` | all the command line args excepting the `$0` (`$1 $2 $3 ...`) |
| `$?` | exit value of last command |<commit_msg>Update special-variables.md<commit_after># Special Variables

Following table shows several useful special variables:

| Varialbe | Usage |
|----------|-------|
| `$@` | all the command line args excepting the `$0` (`$1 $2 $3 ...`) |
| `$?` | exit value of last command |
{'fraction_non_alphanumeric': 0.22699386503067484, 'fraction_numerical': 0.016359918200409, 'mean_word_length': 2.9516129032258065, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 1, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '5443992', 'n_tokens_mistral': 165, 'n_tokens_neox': 153, 'n_words': 52}