Commands by ruslan (10)

  • Checks for syntax errors in PHP files modified in current working copy of a Git repository. Show Sample Output

    git status -s | grep -o ' \S*php$' | while read f; do php -l $f; done
    ruslan · 2013-12-14 11:47:54 1
  • The sample command searches for PHP files replacing tabs with spaces. -u NONE # don't use vimrc Instead of retab! one may pass retab! 4 for instance. Look at this also

    find $DIR -name *.php -exec vim -u NONE -c 'set ft=php' -c 'set shiftwidth=4' -c 'set tabstop=4' -c 'set noexpandtab!' -c 'set noet' -c 'retab!' -c 'bufdo! "execute normal gg=G"' -c wq {} \;
    ruslan · 2011-04-08 11:42:45 1
  • M - current revision, N - older revision

    svn diff -r M:N file.php | patch -p0
    ruslan · 2011-03-29 04:15:02 2
  • Creates HTML code from PHP source Show Sample Output

    php -s source.php > source.html
    ruslan · 2011-03-10 15:11:35 0

  • 0
    wget -O - -o /dev/null | grep -Po '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+'
    ruslan · 2011-02-28 16:46:14 4
  • Get external IP of the current machine via Show Sample Output

    wget -O - -o /dev/null | awk '/\<title/ {print $4}'
    ruslan · 2011-02-15 05:58:30 1
  • in Debian-based systems apt-get could be limited to the specified bandwidth in kilobytes using the apt configuration options(man 5 apt.conf, man apt-get). I'd quote man 5 apt.conf: "The used bandwidth can be limited with Acquire::http::Dl-Limit which accepts integer values in kilobyte. The default value is 0 which deactivates the limit and tries uses as much as possible of the bandwidth..." "HTTPS URIs. Cache-control, Timeout, AllowRedirect, Dl-Limit and proxy options are the same as for http..."

    sudo apt-get -o Acquire::http::Dl-Limit=20 -o Acquire::https::Dl-Limit=20 upgrade -y
    ruslan · 2011-02-14 05:24:49 0
  • This form is used in patches, svn, git etc. And I've created an alias for it: alias diff='diff -Naur --strip-trailing-cr' The latter option is especially useful, when somebody in team works in Windows; could be also used in commands like svn diff --diff-cmd 'diff --strip-trailing-cr'... Show Sample Output

    diff -Naur --strip-trailing-cr
    ruslan · 2011-02-10 14:32:42 0
  • If colordiff utility installed, it is sometimes handy to call this command. Of course, you should create an alias for it. E.g. svndiff.

    svn diff --diff-cmd="colordiff"
    ruslan · 2011-02-10 14:27:55 3
  • The command copies a file from remote SSH host on port 8322 with bandwidth limit 100KB/sec; --progress shows a progress bar --partial turns partial download on; thus, you can resume the process if something goes wrong --bwlimit limits bandwidth by specified KB/sec --ipv4 selects IPv4 as preferred I find it useful to create the following alias: alias myscp='rsync --progress --partial --rsh="ssh -p 8322" --bwlimit=100 --ipv4' in ~/.bash_aliases, ~/.bash_profile, ~/.bash_login or ~/.bashrc where appropriate. Show Sample Output

    rsync --progress --partial --rsh="ssh -p 8322" --bwlimit=100 --ipv4 .
    ruslan · 2011-02-10 14:25:22 2

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Display IP : Count of failed login attempts
The lastb command presents you with the history of failed login attempts (stored in /var/log/btmp). The reference file is read/write by root only by default. This can be quite an exhaustive list with lots of bots hammering away at your machine. Sometimes it is more important to see the scale of things, or in this case the volume of failed logins tied to each source IP. The awk statement determines if the 3rd element is an IP address, and if so increments the running count of failed login attempts associated with it. When done it prints the IP and count. The sort statement sorts numerically (-n) by column 3 (-k 3), so you can see the most aggressive sources of login attempts. Note that the ':' character is the 2nd column, and that the -n and -k can be combined to -nk. Please be aware that the btmp file will contain every instance of a failed login unless explicitly rolled over. It should be safe to delete/archive this file after you've processed it.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Find which service was used by which port number

I finally found out how to use notify-send with at or cron
The simplest way to do it. Works for me, at least. (Why are the variables being set?)

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