Hi Chet, hmm ... I simplified the pattern to "+([^[:space:]])". It works on when I let bash expand files but it does not keep bash from adding "word" commands such as "cd", "pwd", etc. My history related settings are as follows:
shopt -s extglob declare -x HISTSIZE="10000" declare -x HISTFILESIZE="10000" declare -x histchars="!^#" declare -x HISTIGNORE="+([^[:space:]])" declare -x HISTCONTROL="ignorespace:ignoredups:erasedups" declare -x HISTTIMEFORMAT="%FT%T " declare -x HISTFILE="/home/tifr/.cache/bash/history" Any ideas as to how to correctly assign the "+([^[:space:]])" pattern to the "HISTIGNORE" variable? By the way I'm setting the history related variables from my ".bash_login" file. That is why I'm exporting them. Thank you very much for your help. Kind regards Tim 2014/1/11 Tim Friske <m...@timfriske.com>: > Hi, > > executing the following code in GNU bash, Version 4.2.45(1)-release > (x86_64-redhat-linux-gnu), Fedora 19 ... > > shopt -s extglob > export > HISTIGNORE="!(+(!([[\:space\:]]))+([[\:space\:]])+(!([[\:space\:]])))" > declare -p HISTIGNORE > > ... brings bash to a full stop. It does not print a command prompt > hereafter. Why is that. > > Background: > > All I want to tell bash is to ignore any simple, i.e. one word > command. Bash should not remember command lines like `cd`, `pwd`, > `history`, etc. My original definition of the `HISTIGNORE` variable > looked like this: > > export HISTIGNORE="!(+(!([[:space:]]))+([[:space:]])+(!([[:space:]])))" > > I added a `\` backslash character before each `:` colon character > because according to the `bash` info pages the latter separates each > (extended) shell glob, i.e. pattern from another. Without escaping the > single pattern does not have any effect and a simple command still > makes it into history. > > Cheers > Tim
