206 lines
2.7 KiB
HTML
206 lines
2.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>Tests</TITLE
|
|
><META
|
|
NAME="GENERATOR"
|
|
CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
|
|
REL="HOME"
|
|
TITLE="Advanced Bash-Scripting Guide"
|
|
HREF="index.html"><LINK
|
|
REL="UP"
|
|
TITLE="Basics"
|
|
HREF="part2.html"><LINK
|
|
REL="PREVIOUS"
|
|
TITLE="Exit and Exit Status"
|
|
HREF="exit-status.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="Test Constructs"
|
|
HREF="testconstructs.html"></HEAD
|
|
><BODY
|
|
CLASS="CHAPTER"
|
|
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"
|
|
>Advanced Bash-Scripting Guide: </TH
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="left"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="exit-status.html"
|
|
ACCESSKEY="P"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
></TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="testconstructs.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><DIV
|
|
CLASS="CHAPTER"
|
|
><H1
|
|
><A
|
|
NAME="TESTS"
|
|
></A
|
|
>Chapter 7. Tests</H1
|
|
><DIV
|
|
CLASS="TOC"
|
|
><DL
|
|
><DT
|
|
><B
|
|
>Table of Contents</B
|
|
></DT
|
|
><DT
|
|
>7.1. <A
|
|
HREF="testconstructs.html"
|
|
>Test Constructs</A
|
|
></DT
|
|
><DT
|
|
>7.2. <A
|
|
HREF="fto.html"
|
|
>File test operators</A
|
|
></DT
|
|
><DT
|
|
>7.3. <A
|
|
HREF="comparison-ops.html"
|
|
>Other Comparison Operators</A
|
|
></DT
|
|
><DT
|
|
>7.4. <A
|
|
HREF="nestedifthen.html"
|
|
>Nested <TT
|
|
CLASS="REPLACEABLE"
|
|
><I
|
|
>if/then</I
|
|
></TT
|
|
> Condition Tests</A
|
|
></DT
|
|
><DT
|
|
>7.5. <A
|
|
HREF="testtest.html"
|
|
>Testing Your Knowledge of Tests</A
|
|
></DT
|
|
></DL
|
|
></DIV
|
|
><P
|
|
><A
|
|
NAME="IFTHEN"
|
|
></A
|
|
></P
|
|
><P
|
|
>Every reasonably complete programming language can test
|
|
for a condition, then act according to the result of the
|
|
test. Bash has the <A
|
|
HREF="testconstructs.html#TTESTREF"
|
|
>test</A
|
|
>
|
|
command, various <A
|
|
HREF="testconstructs.html#DBLBRACKETS"
|
|
>bracket</A
|
|
>
|
|
and <A
|
|
HREF="testconstructs.html#DBLPARENSTST"
|
|
>parenthesis</A
|
|
> operators,
|
|
and the <B
|
|
CLASS="COMMAND"
|
|
>if/then</B
|
|
> construct.</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="exit-status.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="testconstructs.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Exit and Exit Status</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="part2.html"
|
|
ACCESSKEY="U"
|
|
>Up</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>Test Constructs</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |