Bash variables refered in sed
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怎样在sed命令中用单引号包含双引号来引用变量:
sed -i -e 's/abc/'"$var"'/g' onefile
ports="12 34 56 78"
sed 's/^FW_SERVICES_EXT_TCP=.*$/FW_SERVICES_EXT_TCP="'"$ports"'"/' /etc/sysconfig/SuSEfirewall2
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