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Recursive search and replace in text files on Mac and Linux

In the linux shell, the following command will recursively search and replace all instances of 'this' with 'that' (I don't have a Linux shell in front of me, but it should do). ...
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How do I programmatically change file permissions?

... selecting this one as I don't have the ability to use Marty Lamb's answer. – Roy Rico Mar 20 '09 at 0:44 ...
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Nokogiri installation fails -libxml2 is missing

...is present, however, it doesn't differentiate between "libxml2 is missing" and "a compiler to test libxml2 is missing". share | improve this answer | follow | ...
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How do I get the current username in Windows PowerShell?

...g the PowerShell instance) $(Get-WMIObject -class Win32_ComputerSystem | select username).username -- @TwonOfAn on this other forum Comparison @Kevin Panko's comment on @Mark Seemann's answer deals with choosing one of the categories over the other: [The Windows access token approach] is ...
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Get login username in java

...philosophy of write once, run anywhere (introduction of OS specific code), and secondly, it creates a dependency on Sun's implementation of Java. – Jin Kim May 19 '09 at 16:28 14 ...
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Case insensitive comparison of strings in shell script

...t to compare two strings ignoring case, how can it be done? Is there any standard command for this? 12 Answers ...
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What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?

...ow demonstrate the noticeable artifacting of lossy compression algorithms; select the thumbnail image to view the full size version. Each format is different as described below: JPEG JPEG (Joint Photographic Experts Group) files are (in most cases) a lossy format; the DOS filename extension is JPG...
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?

...iler will sometimes initialize memory with certain patterns such as 0xCD and 0xDD . What I want to know is when and why this happens. ...
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How do I solve the INSTALL_FAILED_DEXOPT error?

... Restarting the emulator from the Android SDK and AVD Manager and selecting the option Wipe User Data has solved this problem for me. You can find the option as highlighted in the below given image: share ...
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How to exit from Python without traceback?

... You are presumably encountering an exception and the program is exiting because of this (with a traceback). The first thing to do therefore is to catch that exception, before exiting cleanly (maybe with a message, example given). Try something like this in your main r...