创建创建另一个脚本的脚本

做对了

如果要插入的内容是硬编码的,请使用引号:

# Because of the quotes around EOF, nothing inside this heredoc is modified.
cat >test.sh <<'EOF'
stock=banana/
touch "$stock/file"
EOF

如果是 不 硬编码,则无引号的ELEDOC变得合适——但需要一些注意:

#!/bin/bash
#      ^^^^-- /bin/sh does not support any means of eval-safe quoting
#             ...a ksh derivative such as bash will provide printf %q

stock=banana/                    # Presumably this is coming from a generic source, ie. $1
printf -v stock_q '%q' "$stock"  # Generate an eval-safe quoted version of stock

# Because the sigil is not quoted, expansions inside the heredoc are performed unless
# they're escaped.
cat >test.sh <<EOF
stock=$stock_q
touch "\$stock/file"
EOF

注意,我们正在使用 printf %q 生成值的安全转义版本并插入 那个 $stock 具有 \$stock ).

回答“为什么”

"$stock" 在传递给之前,由原始shell扩展 echo .