ben.usenet's articles:

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Capturing stderr? 3 47 (6/8/2012 1:46:05 PM) comp.unix.shell I have a bash script that captures the output of a command (it's gpg, as it happens) and also tests the exit code: out=$(command 2>/dev/null) [[ $? -eq 0 ]] || exit 1 In order to improve the error m... Ben

Performance of hand-optimised assembly 108 67 (12/23/2011 6:43:32 PM) comp.lang.c I'm starting a new thread, but it is prompted by this remark from 88888 Dihedral about a short binary search function I posted: | Do you consider to convert 5 to 10 lines of C to assembly? | I did that 20 ye... Ben

Linking an array of const pointers 2 53 (9/2/2011 5:19:54 PM) comp.lang.c++ I have an array (much messier than this cut-down example) that I want to hive off into another source file, but the two compiled files won't link: m.cc: extern int *const table[]; int main() { ... Ben

Hyperlinks in the old ansi.c.txt file 4 155 (2/22/2011 12:31:51 AM) comp.lang.c I was recently using the widely available text file ansi.c.txt to check something or other and I started to get annoyed at how hard it was to read and navigate. I therefore made myself an HTML version that... Ben

_overflow in lcc-win32 7 255 (12/30/2010 3:35:20 PM) comp.compilers.lcc Trying to test _overflow() in lcc-win32 I got an error message that _overflow has no prototype and (from the linker) that __overflow is undefined. Do I need some command-line flag to turn this feature on? -- ... Ben

inline with static 1 278 (2/8/2010 11:44:51 PM) comp.compilers.lcc While trying to understand something you said in comp.std.c I came across the following that looks like a bug to me: inline int f(void) { static int x = 0; return x++; } in... Ben

Dik Winter 34 296 (1/5/2010 11:38:53 PM) comp.lang.c I have just heard the sad news that Dik Winter died on the 28th of December, a couple of months before he was due to retire. http://www.cwi.nl/en/2009/1044/Dik-Winter Since he was a frequent poster here, I... Ben

Adding size in the new "safer" string functions. 9 57 (4/17/2007 8:18:17 AM) comp.lang.c++ I am porting a program from the Windows world to the Linux world. The source uses MS's new "safer" string functions such as: strcat_s(dest, size, source); but there are also calls such as: strcat_s(dest... Ben

ben.usenet's replies:

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Struct pointer vs. struct array pointer 17 22 (2/20/2013 9:17:32 AM) comp.lang.c Say I'm using a standard windows RECT structure... RECT *prect; // I can write prect->left = 0; // but I can also write prect[-1].left = 0; prect[0].left = 0; prect[1].left = 0; and the compil... aleksaZR (112)

find -exec; how to insert a block of code 9 22 (2/20/2013 7:13:06 PM) comp.unix.shell I'm trying to write a script that records checksums recursively for all files in each subdirectory. Is there a syntax that will let me execute: cd '{}'; md5sum \* > md5sum.out from within an -exec comma... sendmenospam (36)

Linux/bash: Conditionally redirecting to a pipe 10 26 (2/22/2013 5:27:49 PM) comp.unix.shell For the purposes of this exercise, you can assume Linux & bash. A problem I frequently run up against is like this: [ "$1" = "-pipe" ] && pipe="| somepipe" somecommand $pipe I hope it is clear enough ... gazelle3 (1598)

Difference between following statements 25 21 (2/25/2013 5:24:09 PM) comp.lang.c Hi, Can someone please clarify difference between following two declaration? const char *p; char* const p; Thanks, Deepak ... deepakpjose (56)

find remove all but the latest 5 files (with spaces and brackets) 12 23 (2/26/2013 11:52:54 PM) comp.unix.shell I am trying to write a script that goes though my jenkins jobs create a backup of them and then deletes any older job. For the history, I am only keeping the latest five backups. The tick is that the jobs conta... MKruer (33)

Regarding man CHMOD command 2 14 (2/27/2013 6:22:43 AM) comp.unix.shell Can someone please patiently explain the following man file for CHMOD with appropriate examples? I changed the permissions for my pendrive files and folders and for this I ran into man CHMOD and got the fol... bkpsusmitaa (30)

Are floating-point zeros required to stay exact? 37 29 (2/27/2013 7:56:18 PM) comp.lang.c Is this guaranteed to always work in all conforming implementations? #include #include int main(void) { double zero = 0.; if (zero == 0.) { puts("Okay!"); return 0; } el... army19876893 (41)

Find and insert into an array 5 19 (2/28/2013 9:16:48 PM) comp.unix.shell Hopefully this is simple fix. I have an array of names to look for specific= names. It works fine unit it hits upon a multiple matches, all those match= es go into the same array table. Normally I would limi... MKruer (33)

removing repeating/duplicate control char 6 23 (3/15/2013 7:31:58 PM) comp.unix.shell Hello, I have a text file where I need to get rid of a repeating control character, I have tried sed and tr but not getting the results I expect. The text file is as an example: ^M text here text here ... peter_sands (55)

tar: extract files only... 6 16 (3/27/2013 10:35:09 AM) comp.unix.shell I am trying to extract files only (not the directory Clearlooks) from this archive: andrew@corinth:~/mplayer_build$ tar -tf Clearlooks-1.5.tar.bz2 Clearlooks/ Clearlooks/skin Clearlooks/README Clearloo... andrew7822 (31)