Recent Notes

Displaying keyword search results 1 - 4
Created by magnum on June 23, 2010 20:42:12    Last update: June 23, 2010 20:52:33
Compile mod_proxy_html from source code. Prerequisite: Apache httpd installed on system with header files. Command: # /usr/local/apache2/bin/apxs -i -c -I/usr/local/i... Output: /usr/local/apache2/build/libtool --silent --mode=c...
Created by Dr. Xi on December 04, 2009 04:33:05    Last update: December 04, 2009 04:33:05
Variable Meaning $_ The default or implicit variable. @_ Within a subroutine the array @_ contains the parameters passed to that subroutine. $a, $b Special package variables when using sort() $<digit> Contains the subpattern from the corresponding set of capturing parentheses from the last pattern match, not counting patterns matched in nested blocks that have been exited already. $. Current line number for the last filehandle accessed. $/ The input record separator, newline by default. $| If set to nonzero, forces a flush right away and after every write or print on the currently selected output channel. Default is 0 (regardless of whether the channel is really buffered by the system or not; $| tells you only whether you've asked Perl explicitly to flush after...
Created by Dr. Xi on September 10, 2008 15:51:42    Last update: November 26, 2008 21:14:46
Variable Description SET AUTO [COMMIT] {ON | OFF | IMM [EDIATE] | n} Controls when Oracle Database commits pending changes to the database. SET CMDS [EP] {; | c | ON | OFF} Sets the non-alphanumeric character used to separate multiple SQL*Plus commands entered on one line to c. SET CON [CAT] {. | c | ON | OFF} Sets the character you can use to terminate a substitution variable reference if you wish to immediately follow the variable with a character that SQL*Plus would otherwise interpret as a part of the substitution variable name. SET ECHO {ON | OFF} Controls whether the START (@) command lists each command in a script as the command is executed. SET EDITF [ILE] file_name[.ext] Sets the default filename...
Created by Dr. Xi on September 29, 2008 23:03:40    Last update: September 29, 2008 23:04:08
Variables set automatically by shell: Variable Description $# Number of command-line arguments. $- Options currently in effect (arguments supplied to sh or to set). $? Exit value of last executed command. $$ Process number of current process. $! Process number of last background command. $0 First word; that is, command name. $n Individual arguments on command line (positional parameters). The Bourne shell allows only nine parameters to be referenced directly (n = 1-9); the Korn shell allows n to be greater than 9 if specified as ${n}. $* All arguments on command line ("$1 $2..."). $@ All arguments on command line, individually quoted ("$1" "$2" ...). Variables set automatically by Korn shell: Variable Description ERRNO Error number of last system call that failed. LINENO Current...