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Where can I set environment variables that crontab will use?

... This answer should get more upvotes and simply be the selected answer: Very simple and elegant and avoids countless kludges that would require jumping all over the system. – Giacomo1968 Dec 14 '18 at 4:42 ...
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What's the rationale for null terminated strings?

... From the horse's mouth None of BCPL, B, or C supports character data strongly in the language; each treats strings much like vectors of integers and supplements general rules by a few conventions. In both BCPL and B a string literal denotes the address of a static ar...
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Replace a character at a specific index in a string?

I'm trying to replace a character at a specific index in a string. 8 Answers 8 ...
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Why use double indirection? or Why use pointers to pointers?

... If you want to have a list of characters (a word), you can use char *word If you want a list of words (a sentence), you can use char **sentence If you want a list of sentences (a monologue), you can use char ***monologue If you want a list of monologue...
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SQL Server: converting UniqueIdentifier to string in a case statement

... I think I found the answer: convert(nvarchar(50), RequestID) Here's the link where I found this info: http://msdn.microsoft.com/en-us/library/ms187928.aspx share | ...
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“#include” a text file in a C program as a char[]

... use it like so $ echo hello world > a $ xxd -i a outputs: unsigned char a[] = { 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x0a }; unsigned int a_len = 12; share | ...
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Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./

...al letters represent the negation of their lowercase counterparts. \W will select all non "word" characters equivalent to [^a-zA-Z0-9_] \S will select all non "whitespace" characters equivalent to [ \t\n\r\f\v] _ will select "_" because we negate it when using the \W and need to add it back in ...
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In C, how should I read a text file and print all strings

... The simplest way is to read a character, and print it right after reading: int c; FILE *file; file = fopen("test.txt", "r"); if (file) { while ((c = getc(file)) != EOF) putchar(c); fclose(file); } c is int above, since EOF is a negative...
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Check substring exists in a string in C

...lusplus.com/reference/clibrary/cstring/strstr/ So, you'd write it like.. char *sent = "this is my sample example"; char *word = "sample"; char *pch = strstr(sent, word); if(pch) { ... } share | ...
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How do I return multiple values from a function in C?

... just silly. In that case, I would return the int and pass the string as a char * and a size_t for the length unless it's absolutely vital for the function to allocate it's own string and/or return NULL. – Chris Lutz Apr 12 '10 at 6:14 ...