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How to make “if not true condition”?

... Here is an answer by way of example: In order to make sure data loggers are online a cron script runs every 15 minutes that looks like this: #!/bin/bash # if ! ping -c 1 SOLAR &>/dev/null then echo "SUBJECT: SOLAR is not responding to ping" | ssmtp abc@d...
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How was the first compiler written?

... Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity. ...
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Prevent RequireJS from Caching Required Scripts

...I make a change to one of the required files, I have to rename the file in order for the changes to be applied. 12 Answer...
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SQL Server Management Studio won't let me add an index to a table

... the Table Designer and right-click on the Index to select "Properties" in order to add/edit them.... All these years wasted on writing custom scripts. face-palm I want my youth back! – MikeTeeVee Nov 17 '15 at 19:55 ...
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boundingRectWithSize for NSAttributedString returning wrong size

... a single one must all use the SAME dictionary (and thus the same font) in order for boundingRectWithSize to work correctly! – Ben Wheeler Aug 2 '13 at 18:05 1 ...
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Git status shows files as changed even though contents are the same

...ppropriate for this). I assume it is with newline on the last line, a byte-order-mark, or non-canonical UTF8 encodings in general. You can always look at xxd or bdiff to do binary diffs too – sehe Nov 23 '11 at 14:14 ...
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Why are Docker container images so large?

... a new layer in the image and every layer requires extra space on disk. In order to keep the number layers to a minimum, any file manipulation like install, moving, extracting, removing, etc, should ideally be made under a single RUN instruction FROM fedora:latest RUN yum -y install nano git &&...
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What is the printf format specifier for bool?

...sing a single char * to printf() is considered bad practice because it's really supposed to be a format string, and an unescaped percent sign might cause your program to blow up (see here for more). Thus, printf("%s", ...) is safer. If you're not doing any actual formatting to begin with, the printf...
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Add new item in existing array in c#.net

...peat(newitem,1)).ToArray(); Notice that if you want to add items to a an ordered collection, List is probably the data structure you want, not an array to start with. share | improve this answer ...
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How do you move a file?

...orge SVN repository. I'd like to move a file from one folder to another in order to maintain its revision history. Is this possible? If so, how do you do it? ...