Question

下面是我的脚本，它获取机器的MAC并存储在配置文件中。

我的问题是每行内都有字符“”并且它不会在文件中打印出来，如何使用“”

来编写文件

MAC=$(ifconfig eth0 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}')
echo "
view.sslVerificationMode = *3*
view.autoConnectDesktop = *TRUE*
view.autoConnectBroker = *TRUE*
view.kioskLogin = *TRUE*
view.nonInteractive = *TRUE*
view.fullScreen = *TRUE*
view.nomenubar = *TRUE*
view.defaultBroker = *viewcs*
view.defaultUser = *CM-${MAC//:/_}*
" > /etc/vmware/view-mandatory-config;
sed -i 's/*/"/g' /etc/vmware/view-mandatory-config

Answer 1

使用cat和here-doc您可以使用多行输入而无需转义字符

MAC=$(ifconfig eth0 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}')
cat << EOT > /etc/vmware/view-mandatory-config
view.sslVerificationMode = "3"
view.autoConnectDesktop = "TRUE"
view.autoConnectBroker = "TRUE"
view.kioskLogin = "TRUE"
view.nonInteractive = "TRUE"
view.fullScreen = "TRUE"
view.nomenubar = "TRUE"
view.defaultBroker = "viewcs"
view.defaultUser = "CM-${MAC//:/_}"
EOT

cat 会将here document生成的stdin输入转发给stdout，从而启用重定向到文件

Answer 2

只需在外部双引号中转义双引号，方法是在它们前面放一个反斜杠：

MAC=$(ifconfig eth0 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}')
echo "
view.sslVerificationMode = \"3\"
view.autoConnectDesktop = \"TRUE\"
view.autoConnectBroker = \"TRUE\"
view.kioskLogin = \"TRUE\"
view.nonInteractive = \"TRUE\"
view.fullScreen = \"TRUE\"
view.nomenubar = \"TRUE\"
view.defaultBroker = \"viewcs\"
view.defaultUser = \"CM-${MAC//:/_}\"
" > /etc/vmware/view-mandatory-config

如何使用Shell脚本打印字符

2 个答案: