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レビューでの指摘
## error msg
* `cd nothing`
* `|||`
## ~echo~ -> 完了
* ~`echo -`~
## cd
* `cd ~`
* `cd //`
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- [x] $? only works as a lone argument to echo but isn't actually interpreted as a variable, e. g. `echo "last result: $?"` does not actually work, it just prints `last result: $?` without any change.…
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```shell
---------------------------
bash-3.2$ echo
---------------------------
```
```shell
---------------------------
bash-3.2$ echo hello
hello
---------------------------
```
```shel…
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## Example
```bash
minishell$ export A="a b c"
minishell$ echo $A
a
```
```bash
minishell$ export A="a a" # OK
minishell$ export A="a 1" # NG
minishell: export: `1': not a valid identifie…
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> [!WARNING]
> ## leakはなさそうだけどsegvしちゃってるよおおおおおおおお。
- [x] ```$> "$A"``` でsegv
- [ ] ```$> "" ``` でexecve: Permission deniedになってる。
- [x] ```$> unset PATH``` の後コマンド実行でsegv
## echo
問題なさそう。
#…
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### Examples
``` bash
ruby -e "puts 'ls' + ' | cat' * 2000" | pbcopy
```
``` bash
minishell$ ls | cat | ...| cat # no newline at the end
minishell: fork: Resource temporarily unavailable
m…
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Quando damos unset no OLDPWD ele soh esta dando unset na hora mas se mudar de pasta ele volta a aparecer..
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```bash
minishell$ ''
minishell: /Users/yliu/.pyenv/shims/: Is a directory
minishell$ ""
minishell: /Users/yliu/.pyenv/shims/: Is a directory
```