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new mail alert in bash prompt
Bash has a mailcheck feature supposed to warn you whenever you received a new mail. This use the $MAIL, $MAILCHECK and $MAILPATH environment variables. I had many problems with this. Most of the time, it only warns me on login, and sometimes not at all, making it quite unreliable.This article discusses a simple way to include a check for new mails directly in the bash prompt.
The idea is to create a cache file for your mailbox. You make an alias for your mail reader (mutt, in my case) that will touch the cache files when the reader is launched. Then, in your bash prompt, you call a script that will verify if the mailbox file is newer than the cache file. And that’s all. Here is what I use.
/usr/local/bin/newmail
#!/usr/bin/env bash MAILDIR=$HOME/Mail if [[ -d $MAILDIR ]]; then for file in $MAILDIR/*; do cache_file="$MAILDIR/.$(basename $file)" if [[ ! -e $cache_file ]]; then touch $cache_filefi if [[ $file -nt $cache_file ]]; then echo -e "new mail in $file\n " fi done fi
~/.bashrc
PS1="\$(/usr/local/bin/newmail)\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\] " alias mutt="touch $HOME/Mail/.* && mutt"
Don’t omit the backslash for the newmail subshell, or it will be only executed once, on startup.
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