<HTML ><HEAD ><TITLE >Number of Processes</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Bash Prompt HOWTO" HREF="index.html"><LINK REL="UP" TITLE="Prompt Code Snippets" HREF="c679.html"><LINK REL="PREVIOUS" TITLE="Uptime" HREF="x758.html"><LINK REL="NEXT" TITLE="Controlling the Size and Appearance of $PWD" HREF="x783.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Bash Prompt HOWTO: </TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="x758.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 11. Prompt Code Snippets</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="x783.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="AEN771" ></A >11.9. Number of Processes</H1 ><P ><TT CLASS="USERINPUT" ><B >ps ax | wc -l | tr -d " "</B ></TT > <EM >OR</EM > <TT CLASS="USERINPUT" ><B >ps ax | wc -l | awk '{print $1}'</B ></TT > <EM >OR</EM > <TT CLASS="USERINPUT" ><B >ps ax | wc -l | sed -e "s: ::g"</B ></TT >. In each case, <TT CLASS="USERINPUT" ><B >tr</B ></TT > or <TT CLASS="USERINPUT" ><B >awk</B ></TT > or <TT CLASS="USERINPUT" ><B >sed</B ></TT > is used to remove the undesirable whitespace.</P ><P >Relative speed: any one of these variants takes about 0.9 seconds on an unloaded 486SX25. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="x758.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="x783.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Uptime</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c679.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Controlling the Size and Appearance of $PWD</TD ></TR ></TABLE ></DIV ></BODY ></HTML >