cmd.rst
changeset 939 1731dd5a4fdb
parent 938 c15eed3ee132
child 940 b40fa8033819
--- a/cmd.rst	Mon Aug 15 00:42:37 2011 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,87 +0,0 @@
--*- mode: outline; coding: utf-8; -*-
-
-* Quoting.
-
- * Arguments are delimited by white space, which is either a space or a tab.
- * A string surrounded by double quotation marks is interpreted as a single
-   argument.
- * A double quotation mark preceded by a backslash, \", is interpreted as a
-   literal double quotation mark.
- * Backslashes are interpreted literally, unless they immediately precede a
-   double quotation mark.
- * If an even number of backslashes is followed by a double quotation mark,
-   then one backslash (\) is placed in the argv array for every pair of
-   backslashes (\\), and the double quotation mark (") is interpreted as a
-   string delimiter.
- * If an odd number of backslashes is followed by a double quotation mark,
-   then one backslash (\) is placed in the argv array for every pair of
-   backslashes (\\) and the double quotation mark is interpreted as an escape
-   sequence by the remaining backslash, causing a literal double quotation
-   mark (") to be placed in argv.
- * In double quote mark need surround such chars:
-     & < > [ ] { } ^ = ; ! ' + , ` ~ %
-   Also all this char can be escaped by ^ char.
- * Long line can be truncated by ^ char, in this case trailing white spaces
-   not allowed.
- * To quote percent sign % before alpha char in batch file double it
-   occurrences or plase in quotes:
-     prog '%'HOME'%' "%"HOME"%" %%HOME%
-
-  http://msdn.microsoft.com/en-us/library/ms880421.aspx
-                Parsing C Command-Line Arguments
-
-* Variables.
-
-Variable name start with letter and underscore, next chars can be letter,
-number and underscore. Variable name is case insensitive.
-
-** List of variables.
-
-  cmd> set
-...
-VAR=VALUE
-
-** Getting.
-
-Write %VAR% in place where you want insert variable VAr value.
-
-** Setting.
-
-  cmd> set /p VAR=VALUE
-
-VAR is variable name, VALUE is value.
-
-** Deleting.
-
-  cmd> set VAR=
-
-VAR is variable name.
-
-** Input from user.
-
-  cmd> set /p VAR=PROMPT
-
-VAR is variable name, PROMPT is displayed prompt.
-
-** Input from file.
-
-  cmd> set /p VAR=<FILE
-
-VAR is variable name, FILE is file name. Sfter executing VAR contain first
-line from FILE.
-
-* CMD tricks.
-
-  $ set /p TOOLOUTPUT= < temp.txt
-
-  $ for /f "tokens=*" %%i in ('%~dp0sometool.exe') do set TOOLOUTPUT=%%i
-
-  $ for /f "tokens=1 delims=" %%s in (users.txt) do (echo %%S & command "%%S") >> outputfile.txt
-
-* Limits.
-
-Variable value and one line command string after expansion can not exceed 8191
-characters for Windows XP and later and 2047 for Windows NT, Windows 2000.
-
-  http://support.microsoft.com/default.aspx?scid=kb;en-us;830473
-                Command prompt (Cmd. exe) command-line string limitation