# HG changeset patch
# User Oleksandr Gavenko <gavenkoa@gmail.com>
# Date 1255862899 -10800
# Node ID 97171c12b447d85f322ce300eabcb9084a7db499
# Parent  9ae36e91b0d099c80a071ace8dca45ee74dfecd2
About command history.

diff -r 9ae36e91b0d0 -r 97171c12b447 bash.rst
--- a/bash.rst	Mon Oct 12 23:05:22 2009 +0300
+++ b/bash.rst	Sun Oct 18 13:48:19 2009 +0300
@@ -8,9 +8,32 @@
 
   PS1='\u@\H$ '
 
-When xterm start bash - it start as nonlogin. So ~/.bash_profile and ~/.bashrc
+When xterm start bash - it start as non-login. So ~/.bash_profile and ~/.bashrc
 didn't read. To workaround this use
 
   $ xterm -e bash -i -c "mc -x"
 
-That make bash interactive and init file readed.
+That make bash interactive and init file read.
+
+* Command history.
+
+Bash allow accessing to command that you type previously. There are exist
+several options to control command history behavior. Set corresponding
+variables in your ~/.bashrc file (which is read by interactive shell):
+
+  #   ignorespace do not save lines that start with space
+  #   erasedups all previous lines matching the current line to be removed from
+  #             the history list before that line is saved
+  export HISTCONTROL=igrorespace:erasedups
+  export HISTIGNORE=" ?cd *":"e *":"sudo mv *":"sudo rm *":"sudo cp *":"sudo mkdir *":"sudo chmod *":"sudo chown *":ls:pwd:"vlc*"
+
+There are another options, with default values (which satisfy my neediness, so
+I don't put they to ~/.bashrc):
+
+  export HISTFILE=~/.bash_history  # where is command history stored
+  export HISTFILESIZE=500          # how many lines been in $HISTFILE
+  export HISTSIZE=500              # how many lines been stored in bash process
+
+** mc (GNU Midnight Commander).
+
+You can also set special history rules for mc subshell in ~/.mc/bashrc file.