riywo

tcpdump -s 65535 -xx -n -q -tttt port 80 > tcpdump.log

mk-query-digest --type http --filter '($event->{fingerprint} || "") =~ m/^get example\.com/' --limit 100% tcpdump.log

riywo

tail -f access_log | awk '$9 == 500{print "\033[31m"}{print $0,"\033[0m"}'

riywo

for i in host1 host2 host3; do echo $i; ssh $i "rm -fr /"; done

riywo

while : ; do echo -n "`date` "; mysql -e 'show global status like "Queries";' | grep Queries; sleep 1; done | tee queries.log

riywo

ssh host1 cat /path/to/file | diff -u /path/to/file -

riywo

前提

参加者(僕も含む)数人で講座は10回未満くらいのイメージ。 時間外で作ってくるのがメイン。

前半〜ローカルで簡単なアプリ作る〜

とりあえずPerlの場合

• Windowsの人はとりあえずMacを買いに行く
• cpanmの使い方
• スクリプト単体で or まずlocal::lib入れてから

riywo

[~]$ mkdir .ssh
[~]$ chmod 600 .ssh
[~]$ mv ~/Downloads/riywo-test.pem ~/.ssh
[~]$ chmod 600 ~/.ssh/riywo-test.pem
[~]$ vim ~/.ssh/config
Host test-cf
        HostName ec2-XX-XX-XX-XX.compute-1.amazonaws.com
        User ec2-user
        Port 22
        IdentityFile ~/.ssh/riywo-test.pem

riywo

[ec2-user@domU-11-11-11-11-11-11 ~]$ sudo su -
[root@domU-11-11-11-11-11-11 ~]# vim /etc/ssh/sshd_config
Port 2222
PermitRootLogin no

[root@domU-11-11-11-11-11-11 ~]# service sshd restart
[root@domU-11-11-11-11-11-11 ~]# netstat -taopn
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name    Timer
tcp        0      0 0.0.0.0:2222               0.0.0.0:*                   LISTEN      1076/sshd           off (0.00/0/0)

riywo

<Directory />
    AuthUserFile /path/to/.htpasswd
    AuthName "f0ck you"
    AuthType Basic
    Require valid-user

    Satisfy Any
#    Require valid-user  別のディレクティブで指定する場合
    Order deny,allow
    Deny from all

riywo

diff -u <(echo hoge) <(echo fuga)
--- /dev/fd/63  2011-03-04 12:44:34.176435837 +0900
+++ /dev/fd/62  2011-03-04 12:44:34.176435837 +0900
@@ -1 +1 @@
-hoge
+fuga