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==Shell Syntax== == Shell Commands == === Reserved Words === === Simple Commands === === Pipelines === === List of Commands === === Compound Commands === ==== Looping Constructs ==== ==== Conditional Constructs =if==='''if'''<syntaxhighlight lang="bash">
if [ -z "$1" ] && [ -z "$2" ]
fi
</syntaxhighlight>연산자
<nowiki>==== 연산자 =====</nowiki>
!=
True if the length of <var>string</var> is non-zero.
==== Grouping Commands ====
=== Coprocesses ===
=== GNU Parallel ===
== Shell Functions ==
== Shell Parameters ==
== Shell Expansions ==
=== Brace Expansion ===
=== Tilde Expansion ===
=== Shell Parameter Expansion ===
=== 명령 대체(Command Substitution) ===
다음과 같이 사용한다.<syntaxhighlight lang="bash">
$(command)
</syntaxhighlight>or<syntaxhighlight lang="bash">
`command`
</syntaxhighlight>변수에 넣어 출력할 수 있다.<syntaxhighlight lang="bash">
OUTPUT=$(ls -1)
echo "${OUTPUT}"
</syntaxhighlight>
=== Arithmetic Expansion ===
=== Process Substitution ===
=== Word Splitting ===
=== Filename Expansion ===
=== Quote Removal ===
== Redirections ==
== Executing Commands ==
== Shell Scripts ==
=== stdout없애기 ===
\": "출력해야 하는 경우
==단축키==
