> ## Documentation Index
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# Bash Conditional AND List
A conditional AND list is a sequence of one or more pipelines separated by the `&&` control operator. It enforces short-circuit left-to-right evaluation, where a subsequent command is executed if and only if the preceding command terminates with an exit status of zero (success).
**Syntax**
```bash theme={"dark"}
pipeline1 && pipeline2 [&& pipeline3 ...]
```
**Execution Mechanics**
1. The shell evaluates `pipeline1` and waits for it to terminate.
2. If `pipeline1` yields an exit status of `0`, the shell proceeds to evaluate `pipeline2`.
3. If `pipeline1` yields a non-zero exit status, the shell immediately aborts evaluation of the list. `pipeline2` and any subsequent pipelines are not executed.
4. This sequential evaluation continues until a pipeline returns a non-zero status or the end of the list is reached.
**Exit Status**
The overall exit status of an AND list is the exact exit status of the last command executed within that list.
* If the list short-circuits due to a failure, the exit status of the list is the non-zero value of the pipeline that failed.
* If the entire list executes successfully, the exit status of the list is `0` (the exit status of the final pipeline).
**Precedence and Associativity**
The `&&` control operator shares equal precedence with the conditional OR operator (`||`). When combined in a single compound list without explicit grouping, they are evaluated with strict left-to-right associativity. To alter the evaluation order, pipelines must be enclosed in grouping constructs, such as a subshell `( ... )` or a current-shell group `{ ...; }`.
```bash theme={"dark"}
# Left-to-right associativity
pipeline1 && pipeline2 || pipeline3
# Altered precedence using a current-shell group
pipeline1 && { pipeline2 || pipeline3; }
```
**Asynchronous Execution**
If an AND list is terminated by the asynchronous control operator `&`, the entire list is executed in the background as a single subshell process. The short-circuit logic remains intact within that background process.
```bash theme={"dark"}
pipeline1 && pipeline2 &
```
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