You may have incoming emails in your box which should be "marked as read" by default. Spam messages for example. Read below how to do it on the server side.

You have a machine (a master host) with several idividually installed packages. You want those packages to be rebuilt somewhere else (slave host). Do this:

1. On the master host
# pkg_info -Q PKGPATH -a > pkgs_i_want_to_have
2. Copy the generated file to the slave host, and issue as root:
# cat pkgs_i_want_to_have | (while read pp ; do cd /usr/pkgsrc/$pp ; make && make bin-install ; done)

Simple enough, eh?

If you want to see all symbols in a binary file, try this:

$ objdump -t -C <binary file>

Look up in the manpage for details!

openssl s_client -starttls smtp -crlf -connect mail.mysite.com:25

Use this command to list all listening IPV4 ports with ip and port numbers:

$ netstat -anl -f inet

$ tail -f file | grep --line-buffered my_pattern

You write your good program to use the rsyslogd installed on your system. You would have a bunch of log lines, but you can't see any. Check this:

Save this script into an sh file:

#!/usr/bin/env bash

DBNAME=$1
INFILE=$2

SED_FILTER="/^-- Current Database: \`$DBNAME\`/,/^-- Current Database: /p"

sed -n "$SED_FILTER" $INFILE > $DBNAME.sql

echo "Dump is ready: $DBNAME.sql"

exit 0

Run as :

$ sh script_name dbname full_dump_file

If you want to avoid problems during foreign key imports, then insert this line into the newly generated file after the USE <DBNAME>; statement:

SET FOREIGN_KEY_CHECKS=0;

Put this line into your ~/.bashrc:

case "$TERM" in
rxvt|rxvt-unicode|xterm|vt100)
        export PS1="\[\e[1;32m\]\u@\[\e[1;33m\]\h\[\e[00m\]:\[\e[0;37m\]\w\[\e[00m\] \$ "
        export PROMPT_COMMAND='echo -ne "\e]0;${USER}@${HOSTNAME}: ${PWD}\007"'
        ;;
esac

After installing LXDE either from binary or from pkgsrc, it wouldn't start. Here is how to solve: