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swap out "80" for your port of interest. Can use port number or named ports e.g. "http"
When you don't have c_rehash handy. Really simple - if you have a .pem file that doesn't really contain a x509 cert (let's say, newreq.pem), it will create a link, simply called '.0', pointing to that file.
zsh: list of files sorted by size, greater than 100mb, head the top 5. '**/*' is recursive, and the glob qualifiers provide '.' = regular file, 'L' size, which is followed by 'm' = 'megabyte', and finally '+100' = a value of 100
Listens for events in the directory. Each created file is displayed on stdout. Then each fileline is read by the loop and a command is run.
This can be used to force permissions in a directory, as an alternative for umask.
More details:
http://en.positon.org/post/A-solution-to-the-umask-problem%3A-inotify-to-force-permissions
Converts any number of seconds into days, hours, minutes and seconds.
sec2dhms() {
declare -i SS="$1"
D=$(( SS / 86400 ))
H=$(( SS % 86400 / 3600 ))
M=$(( SS % 3600 / 60 ))
S=$(( SS % 60 ))
[ "$D" -gt 0 ] && echo -n "${D}:"
[ "$H" -gt 0 ] && printf "%02g:" "$H"
printf "%02g:%02g\n" "$M" "$S"
}
Converts any number of seconds into days, hours, minutes and seconds.
sec2dhms() {
declare -i SS="$1"
D=$(( SS / 86400 ))
H=$(( SS % 86400 / 3600 ))
M=$(( SS % 3600 / 60 ))
S=$(( SS % 60 ))
[ "$D" -gt 0 ] && echo -n "${D}:"
[ "$H" -gt 0 ] && printf "%02g:" "$H"
printf "%02g:%02g\n" "$M" "$S"
}
The difference between the original version provided and this one is that this one works rather than outputting a wget error
Shows all block devices in a tree with descruptions of what they are.
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.
This command lets you see and scroll through all of the strings that are stored in the RAM at any given time. Press space bar to scroll through to see more pages (or use the arrow keys etc).
Sometimes if you don't save that file that you were working on or want to get back something you closed it can be found floating around in here!
The awk command only shows lines that are longer than 20 characters (to avoid seeing lots of junk that probably isn't "human readable").
If you want to dump the whole thing to a file replace the final '| less' with '> memorydump'. This is great for searching through many times (and with the added bonus that it doesn't overwrite any memory...).
Here's a neat example to show up conversations that were had in pidgin (will probably work after it has been closed)...
$sudo cat /proc/kcore | strings | grep '([0-9]\{2\}:[0-9]\{2\}:[0-9]\{2\})'
(depending on sudo settings it might be best to run
$sudo su
first to get to a # prompt)
