このコードを実行した後
#!/bin/bash
rm -f myfile myfile-individual
echo "Greetings, foobar!" > myfile
MYSTRING="Jack"
cat myfile | sed 's:foobar:$MYSTRING:' > myfile-individual
私たちはついに得ます
Greetings, $MYSTRING!
私の個人的なファイルに。
出力（sed / bash）スクリプトは何ですか？
Greetings, Jack!
ベストアンサー1
一重引用符を二重引用符に変更します。そして猫を置きなさい（UUoC）：
sed "s:foobar:$MYSTRING:" myfile > myfile-individual
Bashのマンページから：
Enclosing characters in single quotes preserves the literal value of
each character within the quotes. A single quote may not occur between
single quotes, even when preceded by a backslash.
Enclosing characters in double quotes preserves the literal value of
all characters within the quotes, with the exception of $, `, \, and,
when history expansion is enabled, !. The characters $ and ` retain
their special meaning within double quotes. The backslash retains its
special meaning only when followed by one of the following characters:
$, `, ", \, or <newline>. A double quote may be quoted within double
quotes by preceding it with a backslash. If enabled, history expansion
will be performed unless an ! appearing in double quotes is escaped
using a backslash. The backslash preceding the ! is not removed.