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Create a new entry in the local (/) domain under the category /users.dscl / -create /Users/toddharris Create and set the shell property to bash.dscl / -create /Users/toddharris UserShell /bin/bash March 31st, 2010 | Tags: mac | Category: 電腦 | Leave a comment Adding and Removing a Printer This is done via the lpadmin command. To add a printer, use this format: lpadmin -p Printer_Name -L “Printer Location” -E -v lpd://x.x.x.x -P /Library/Printers/PPDs/Contents/Resources/en.lproj/Printer_Driver.gz All you have to do to the above is adjust the settings as necessary. Unfortunately, the tradeoff here is that you can’t use spaces in […] 1. Fix overexposure Press ctrl-J to duplicate the background image to new layer Choose “Multiply” layer mode 2. Fix underexposure Choose “Screen” layer mode 3. Enhance contrast Choose “Soft light” layer mode Taken from http://elqui.dcsc.utfsm.cl/util/email/backscatter.html Your MX servers should reject email for unknown users at the SMTP initial transaction and NOT forward them to internal SMTP servers without a “user check”. Step1: In MX SERVER, add these 4 lines to your “.mc” file in the right place.. FEATURE(access_db, hash -T<TMPF> /etc/mail/access)dnl FEATURE(`blacklist_recipients’)dnl define(`VIRTUSER_TABLE’, `hash -o /etc/mail/virtusertable’)dnl […] Sourcing cheap external RAID storage based on eSATA 1. 5 bay 3.5″ SATA external RAID stoarge ($1399) http://alris.com.hk/?p=427&lang=en 2. Still sourcing a fast SATA RAID controller with RAID5 and eSATA connection The steps are easy. Just download the VMware esxi4 update 1 ISO and install on an USB thumb drive attached on the machine. The only stuff need to twist is the detection of the onboard Realtek 8111C NIC which the original esxi4 doesn’t support. Following the instructions from http://www.vm-help.com/esx40i/customize_oem_tgz.php, I replaced the /bootbank/oem.tgz with the […] 1. Add the duplex printer first 2. edit /private/etc/cups/ppd/hp8150.ppd 3. Search “Duplex None” and replace the fragment from *Duplex None/Off (1-Sided): ” <</Duplex false>> setpagedevice” To *Duplex None/Off (1-Sided): ” <</Duplex true /Tumble false>> setpagedevice” For My core i7 machine with ASUS P6T deluxe MB(X58+ICH10R) running Win7 64 bits c:\ drive (single 500GGB SATA DISK) Sequential Read : 114.117 MB/s Sequential Write : 115.773 MB/s Random Read 512KB : 35.597 MB/s Random Write 512KB : 73.242 MB/s Random Read 4KB : 0.646 MB/s Random Write 4KB : 2.087 MB/s Test […] Recently I have done some informal disk performance test on my newly arrived workstations. (copy a 1GB text file on the same file system). On a Dell Precsion T3500 with Linux software RAID1 of 2x500GB SATA disk with AHCI enabled : [root@gsx42 disk1]# time cp a b real 0m4.499s user 0m0.054s sys 0m1.367s On our […] Recently I have a need to configure a web directory to have user authentication to access its content. The simplest way is to use .htaccess + htpasswd. However,the requirement specified that the user should be able to change their assigned password later. This requirement make me can’t use the traditional file based authentication (password hard-coded […] |
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