为什么 echo 和 "SENTENCE" 之间需要美元符号
Why does dollar sign is needed between echo and "SENTENCE"
我在 /etc/init.d/* 脚本中发现 echo $"<SENTENCE>" 与 echo $"Starting $prog: " 相似。
我在 CentOS6.7 服务器上使用终端进行了测试。但是我不明白为什么 "<SENTENCE>".
之前需要“$”
$ prog=sample_process
$ echo $"Starting $prog: "
Starting test_process:
$ echo "Starting $prog: "
Starting test_process:
[问题]
为什么在 echo 和 "SENTENCE" 之间需要 '$'？在我看来，echo $"Starting $prog: "和echo "Starting $prog: "都是一样的。
man bash，引用下：
A double-quoted string preceded by a dollar sign ($"string") will cause
the string to be translated according to the current locale. If the
current locale is C or POSIX, the dollar sign is ignored. If the
string is translated and replaced, the replacement is double-quoted.
编辑：tutorial.
我在 /etc/init.d/* 脚本中发现 echo $"<SENTENCE>" 与 echo $"Starting $prog: " 相似。
我在 CentOS6.7 服务器上使用终端进行了测试。但是我不明白为什么 "<SENTENCE>".
$ prog=sample_process
$ echo $"Starting $prog: "
Starting test_process:
$ echo "Starting $prog: "
Starting test_process:
[问题]
为什么在 echo 和 "SENTENCE" 之间需要 '$'？在我看来，echo $"Starting $prog: "和echo "Starting $prog: "都是一样的。
man bash，引用下：
A double-quoted string preceded by a dollar sign (
$"string") will cause the string to be translated according to the current locale. If the current locale is C or POSIX, the dollar sign is ignored. If the string is translated and replaced, the replacement is double-quoted.
编辑：tutorial.