Oracle sqlplus command line tools does not support command line editing out-of-the-box. But on Linux there's a handy utility that enables command line editing with any command line tool: rlwrap - readline wrapper. Install rlwrap: $ sudo apt-get install rlwrap Create a keywords file .sql.dict (optional, but convenient): false null true access add as asc begin by chec... It would be nice to add the tables names also. Create an alias for sqlplus (put it in .bashrc ): alias sqlplus='rlwrap -f $HOME/.sql.dict sqlplus'

The MIPS CPU is able to run both big-endian and little-endian. So a system built on MIPS can be either big-endian (mips) or little-endian (mipsel). The file command shows the architecture: $ file ls ls: ELF 32-bit LSB executable, MIPS, ... but readelf will tell the endianness: $ readelf -h ls ELF Header: Magic: 7f 45...

I got this error while building an APK: [apply] [apply] UNEXPECTED TOP-LEVEL ERROR... Apparently the dx tool was running out of memory. The dx script (shell or bat) provides options to pass in Java options, but it's a lot easier just to bump up the default in dx : # By default, give dx a max heap size of 1 gig. Th... Here, I changed the default 1024M to 1624M and resolved the problem.

Looks like for Linux fdisk , cylinders as display units was deprecated, using sectors is the new way. # fdisk -v fdisk (util-linux-ng 2.18) # ... Notice that cylinder numbers actually overlap for the last 2 partitions.

Java heap space setting from command line: -Xms for initial heap size -Xmx for maximum heap size Initial heap size 128m, max heap size 256m: java -Xms128m -Xmx256m MyApp Initial heap size 256m, max heap size 256m: java -Xms128m -Xmx256m MyApp Max heap size can't be less than initial heap size: java -ms256m -mx128m MyApp Error occurred durin...

Windows command line shell does not come with a sleep command. One trick is to emulate sleep using the ping command: C:\>ping /? Usage: ping [-t] [-a] [-n count... To sleep for about 5 seconds: @rem make sure to ping a non-existing IP, otherwis... If you have the Windows Resource Kit installed, it does provide a sleep command: C:\>sleep Usage: sleep time-to-sleep-in-s...

You can use the ntfsresize utility on Linux to shrink or expand an NTFS partition (boot, for example, with the DRBL live cd). To shrink an NTFS partition: shrink NTFS (the file system) with ntfsresize. re-create a smaller partition to hold the shrinked file system with FDisk. To expand an NTFS partition: Recreate a partition that's bigger than the previous one. expand NTFS to the full size of the new partition. The following are from excerpts from ntfsresize FAQ (Frequently Asked Questions) : ntfsresize help: [tinker:root]:(~)# ntfsresize -h ntfsresize v1.... ntfsresize example session: [tinker:root]:(~)# ntfsresize -s11000M /dev/hd... Fdisk example session: [tinker:root]:(~)# fdisk /dev/hdc ...

Android adb failed to start after I installed the SDK. Running adb from the command line reveals the error: /lib/ld-linux.so.2: bad ELF interpreter: No such f... I'm running 64-bit Fedora but Android adb is looking for 32-bit Linux loader. This is resolved by installing the 32-bit libraries. # yum whatprovides ld-linux.so.2 Loaded plugins... I did the same for libncurses.so.5 and libstdc++.so.6 to resolve all dependencies.

cURL is a command line tool for transferring files with URL syntax. The main purpose and use for cURL is to automate unattended file transfers or sequences of operations. It's really easy to see HTTP headers with curl: C:\>curl --head http://www.google.com HTTP/1.0 ... or, headers and page together (dump headers to stdout): $ curl --dump-header - http://www.google.com HTTP/... Download openssl from openssl.org: curl http://www.openssl.org/source/openssl-0.9.6m.... C:\>curl --help Usage: curl [options...] <url> ...

From X(7) manual page : Although the layout of windows on a display is controlled by the window manager that the user is running (described below), most X programs accept a command line argument of the form -geometry WIDTHxHEIGHT+XOFF+YOFF (where WIDTH, HEIGHT, XOFF, and YOFF are numbers) for specifying a preferred size and location for this application's main window. The WIDTH and HEIGHT parts of the geometry specification are usually measured in either pixels or characters , depending on the application. The XOFF and YOFF parts are measured in pixels and are used to specify the distance of the window from the left or right and top and bottom edges of the screen, respectively. Both types of offsets are measured from the indicated edge of...