Bash Cookbook Author (bashcookbook)

Bash Cookbook Author

Best of 2010! We made the top 25 O'Reilly e-books for 2010! Ad: Get 60% off those titles today only w/code DDT25 at http://oreil.ly/hQxKRR

Bash Cookbook Author

Delete a function definition with the "unset" builtin, but add the "-f" option. Example: if you have function "myfunc" use: unset -f myfunc

Bash Cookbook Author

See all the functions defined in your environment with "declare -f" or "typeset -f" . Specify a function name to see just that function.

Bash Cookbook Author

Use !cmd to repeat the last command beginning with "cmd" or just look at what it would be with !cmd:p

Bash Cookbook Author

Keep your history smaller by omitting adjacent duplicate entries; just set HISTIGNORE="&" or HISTCONTROL="ignoredups"

Bash Cookbook Author

Use "history -s some command" to add some command to the end of your history list without actually executing it.

Bash Cookbook Author

'single quotes' give you no substitutions but used inside "dbl quotes" they have no special meaning so you can do: echo "MYVAR='$MYVAR'"

Bash Cookbook Author

Fill an array variable from a line of text parsed into white-space-separated words with: read -a VAR then echo ${VAR[2]} for the 3rd word.

Bash Cookbook Author

A : command is a builtin that does nothing but evaluate its arguments. It's a handy way to "declare" defaults, like : ${MYVAR:=default}

Bash Cookbook Author

Talk at SVLUG went well - now back to bash: if VAR holds "host:/some/path" then use ${VAR%%:*} to get just the host name.

Bash Cookbook Author

I'm in San Jose today - talking to the SVLUG tonight 7-9pm. Come and say "hi" and let me know you subscribe via identi.ca . - Carl svlug.org

Bash Cookbook Author

Will you be there Wed. 7pm at SVLUG? Bring your copy of bash Cookbook I'll stay around after and sign yours! Carl www.svlug.org/meetings.php

Bash Cookbook Author

Want to know all your shell variables beginning with S ? Type: echo ${!S*} ; for v in "${!S@}" ; do echo $v = ${!v} ; done

Bash Cookbook Author

Come meet a #bashcookbook author - Live, In Person - at Silicon Valley Linux User Group this Wed. 7pm http://www.svlug.org/meetings.php

Bash Cookbook Author

Ever want to internationalize your shell scripts? check out this Linux Journal article: http://tinyurl.com/bash-i18n

Bash Cookbook Author

Change your directory stack by simple assignment, e.g. DIRSTACK[2]=/new/loc but you need pushd or popd to add or remove stack entries.

Bash Cookbook Author

Do you use "dirs", "pushd" and "popd"? Do you know DIRSTACK is a bash array variable with each of the stack's directory names as an element?

Bash Cookbook Author

Clear out that pile of directories from all your pushd cmds, leaving you in the current directory but w/an empty stack; type: dirs -c

Bash Cookbook Author

Get bash Cookbook! Today only #Ebook Deal: bashcookbook or any of 45 others (DRM-free) Only $9.99 ea. Use code: DDCCC http://oreil.ly/dmohlH

Bash Cookbook Author

If you use pushd and have a stack of directories, use ~2 for the 2nd dir from the top (3rd in the stack) as in: cp myfile ~2