lfs-book-zh_CN/appendixa/grep-desc.xml

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<sect2><title>Descriptions</title>

<para>(Last checked against version &grep-contversion;.)</para>

<sect3><title>Program file descriptions</title>

<para><command>egrep</command> prints lines matching an extended regular
expression.</para>

<para><command>fgrep</command> prints lines matching a list of fixed
strings.</para>

<para><command>grep</command> prints lines matching a basic regular
expression.</para>

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