X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=grml_tips;h=5cce08e8f86961d0e8ab77fed35278894049c380;hb=570574686735940a520968f0480e294933d4b4ef;hp=4546d3c98d6b7a881625140dbdb61adb1d6d6693;hpb=250a5184541b90358179cd6494d61aa47c749928;p=grml-tips.git

diff --git a/grml_tips b/grml_tips
index 4546d3c..5cce08e 100644
--- a/grml_tips
+++ b/grml_tips
@@ -1311,6 +1311,10 @@ product ID when loading the usbserial module. Usage example:
 Bus 004 Device 008: ID 1199:6813 Sierra Wireless, Inc.
 
 # modprobe usbserial vendor=0x1199 product=0x6813
+
+To get a list of available providers execute:
+
+# gcom -s -d /dev/ttyUSB0 /usr/share/doc/gcom/examples/operator
 -- 
 hdparm - get/set hard disk parameters
 
@@ -2651,7 +2655,8 @@ See: man grml-terminalserver + http://grml.org/terminalserver/
 -- 
 Debugging SSL communications:
 
-% openssl s_client -connect server.adress:993
+% openssl s_client -connect server.adress:993 > output_file
+% openssl x509 -noout -text -in output_file
 
 or
 
@@ -2941,7 +2946,7 @@ host.example.com.       3600    IN      A       192.168.1.1
 
 2. Configure dns2tcpd on host.example.com.:
 # cat /etc/dns2tcpd.conf 
-listen = 192.168.1.1          #the ip dnstun should listen on
+listen = 192.168.1.1          #the ip dns2tcpd should listen on
 port = 53                     #" port " " " "
 user = nobody
 chroot = /tmp
@@ -3001,3 +3006,54 @@ Hints:
   - Do not use interface names without ending 0 (otherwise startup fails).
   - Only chooss unique names for interfaces.
 -- 
+Find dangling symlinks using zsh:
+
+% ls **/*(-@)
+-- 
+Use approx with runit supervision
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Install the packages:
+# apt-get install approx runit
+
+Add user approxlog for the logging daemon:
+# adduser --system --home /nonexistent --no-create-home approxlog
+
+Create config directory:
+# mkdir /etc/sv/approx
+
+Use /var/run/sv.approx as supervise directory:
+# ln -s /var/run/sv.approx /etc/sv/approx/supervise
+
+# cat > /etc/sv/approx/run << EOF
+#!/bin/sh
+echo 'approx starting'
+exec approx -f 2>&1
+EOF
+
+You normally do not need a logging service for approx because it logs
+to syslog too. So just for completion:
+# mkdir -p /etc/sv/approx/log
+# ln -s /var/run/sv.approx.log /etc/sv/approx/log/supervise
+# cat > /etc/sv/approx/log/run << EOF
+#!/bin/sh
+set -e
+LOG="/var/log/approx"
+test -d "$LOG" || mkdir -p -m2750 "$LOG" && chown approxlog:adm "$LOG"
+exec chpst -uapproxlog svlogd -tt -v "$LOG"
+EOF
+
+Now activate the new approx service (will be started within 5s):
+# ln -s /etc/sv/approx/ /var/service/
+
+Make approx managed via runit available via init-script interface:
+# dpkg-divert --local --rename /etc/init.d/approx
+# ln -s /usr/bin/sv /etc/init.d/approx
+-- 
+Remote-reboot a grml system using SysRQ via /proc (execute as root):
+
+eject &>/dev/null
+umount -l /cdrom
+eject /dev/cdrom
+echo b > /proc/sysrq-trigger
+--