92 lines
4.2 KiB
Plaintext
92 lines
4.2 KiB
Plaintext
<sect1 id="using-cygwinenv"><title>The <EnVar>CYGWIN</EnVar> environment
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variable</title>
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<para>The <EnVar>CYGWIN</EnVar> environment variable is used to configure
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many global settings for the Cygwin runtime system. It contains the options
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listed below, separated by blank characters. Many options can be turned off
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by prefixing with <literal>no </literal>.</para>
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<itemizedlist Mark="bullet">
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<listitem>
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<para><FirstTerm>(no)binmode</FirstTerm> - if set, non-disk
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(e.g. pipe and COM ports) file opens default to binary mode
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(no CR/LF/Ctrl-Z translations) instead of text mode.
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Defaults to set (binary mode). This option must be set
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before starting a Cygwin shell to have an effect on redirection.
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</para>
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<warning><title>Warning!</title><para>If set in 12/98 b20.1, all files
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always open in binary mode.</para> </warning>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)envcache</FirstTerm> - If set, environment variable
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conversions (between Win32 and POSIX) are cached. Note that this is may
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cause problems if the mount table changes, as the cache is not invalidated
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and may contain values that depend on the previous mount table
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contents. Defaults to set.</para>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)export</FirstTerm> - if set, the final values of these
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settings are re-exported to the environment as $CYGWIN again.</para>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)glob</FirstTerm> - if set, command line arguments
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containing UNIX-style file wildcard characters (brackets, question mark,
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asterisk, escaped with \) are expanded into lists of files that match
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those wildcards.
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This is applicable only to programs running from a DOS command line prompt.
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Default is set.</para>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)ntea</FirstTerm> - if set, use the full NT Extended
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Attributes to store UNIX-like inode information.
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This option only operates under Windows NT. Defaults to not set. </para>
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<Warning><Title>Warning!</Title> <para>This may create additional
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<emphasis>large</emphasis> files on non-NTFS partitions.</para></Warning>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)ntsec</FirstTerm> - if set, use the NT security
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model to set UNIX-like permissions on files and processes. The
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file permissions can only be set on NTFS partitions. FAT and SAMBA doesn't
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support the NT file security. For more information, read the documentation
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in <citation>ntsec.sgml</citation>.</para>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)reset_com</FirstTerm> - if set, serial ports are reset
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to 9600-8-N-1 with no flow control when used. This is done at open
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time and when handles are inherited. Defaults to set.</para>
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</listitem>
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<listitem>
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<para><FirstTerm>strace=n[:cache][,filename]</FirstTerm> - configures system
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tracing. Off by default, setting various bits in <literal>n</literal> (a
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bit flag) enables various types of system messages. Setting
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<literal>n</literal> to 1 enables most messages. Other values can be found
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in <filename>sys/strace.h</filename>. The <literal>:cache</literal> option
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lets you specify how many lines to cache before flushing the output
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(example: <literal>strace=1:20</literal>). The <literal>filename</literal>
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option lets you send the messages to a file instead of the screen. </para>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)strip_title</FirstTerm> - if set, strips the directory
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part off the window title, if any. Default is not set.</para>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)title</FirstTerm> - if set, the title bar
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reflects the name of the program currently running. Default is not
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set. Note that under Win9x the title bar is always enabled and it is
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stripped by default, but this is because of the way Win9x works. In
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order not to strip, specify <literal>title</literal> or <literal>title
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nostrip_title</literal>.</para>
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</listitem>
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<listitem>
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<para><FirstTerm>(no)tty</FirstTerm> - if set, Cygwin enables extra support
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(i.e., termios) for UNIX-like ttys.
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It is not compatible with some Windows programs.
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Defaults to not set, in which case the tty is opened in text mode
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with ^Z as EOF. Note that this has been changed such that ^D works as
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expected instead of ^Z, and is settable via stty.
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This option must be specified before starting a Cygwin shell
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and it cannot be changed in the shell.</para>
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</listitem>
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</itemizedlist>
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</sect1>
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