... We can, in fact, tidy this up a little by replacing (\s|[az]) with the less cluttered [\sa-z] We thus eliminate the need for the nested grouping $ perl matchtest.pl Enter some text to find: (the[\sa-z])|or ... Tip Note that we use a backslash to escape the first “dollar” symbol in each print() statement—thus displaying the actual $ character—while leaving the second dollar symbol in each line unescaped, ... can still recognize it as a regular expression, rather than a block or comment or anything else Thus, /^\s*[A-Z]/; can be written as follows, explicitly including the m operator m/^\s*[A-Z]/;...
... conversion for images • Background: Create beautiful backgrounds and canvases • Thumbnail and Frame: Create a framed thumbnail of an image • Transparency: Create a transparent image for use on the ... of images • Composite: Combine several images to create a composite image • Montage: Generate a thumbnail index of a list of images • Special Effects: Add artistic filters like charcoal, monochrome, ... its name suggests is converting image formats We can use Convert for more functions, like making thumbnails of images, simulating a charcoal drawing, colorizing the image with the fill color, embossing...
... công việc cần thiết Dòng lệnh công cụ hữu hiệu Dòng lệnh Unix Linux “case sensitive” Để biết cách sửdụng dòng lệnh, gọi lệnh man Vd: man ls Cú pháp dòng lệnh Cú pháp dòng lệnh gồm có ba ... < filename Tạo file /tmp/in.txt có nội dung /root Sửdụng lệnh: ls –al /tmp/in.txt redirect output command > output command >> output Sửdụng lệnh: ls –al /root > /tmp/out.txt Chuyển hướng ... kê nội dungthư mục root (bao gồm file ẩn) arguments Lệnh thông dụng Lệnh su sudo Lệnh gán biến môi trường Lệnh tạo, xóa, sửa, copy file , thư mục mkdir, cp, mv, rmdir, ln cat, vi, rm...
... commands The first one is date This command displays the current time and date [me@linuxbox ~]$ date Thu Oct 25 13:51:54 EDT 2007 A related command is cal which, by default, displays a calendar of ... argument in the description of a command (as above), it means that the argument can be repeated, thus: mkdir dir1 would create a single directory named “dir1”, while mkdir dir1 dir2 dir3 would...
... the command line When writing it, I had in mind system administrators, software developers, and enthusiastic users who want to get things going from the Linux command line For beginning users, this ... added value to Linux is - Fedora Linux is available for free download at SUSE able software, thus trying to make money out of it period still dominated the market - CHAPTER ST A R TING L INU ... argument of the command, which in this case makes clear to whom to send the mail message As a rule of thumb, arguments at the end of the command are normally command arguhow to find out the differences...
... commands The first one is date This command displays the current time and date: [me@linuxbox ~]$ date Thu Oct 25 13:51:54 EDT 2012 A related command is cal, which, by default, displays a calendar of...
... commands The first one is date This command displays the current time and date: [me@linuxbox ~]$ date Thu Oct 25 13:51:54 EDT 2012 A related command is cal, which, by default, displays a calendar of...
... ■ Compiles all of the Visual Basic NET files in the current directory to Thusly.hence (a DLL): vbc /target:library /out:Thusly.hence *.vb P:\010Comp\CertPrs8\653-6\appb.vp Wednesday, October 30,...
... selected network traffic over various technologies, including Frame Relay, Asynchronous Transfer Mode (ATM) , Ethernet and 802.1 networks, SONET, and IP routed networks Chapter 25, “Configuring Application...