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No news is good news with Unix and Linux

No news is good news ... so says Linux and Unix. All processes return a status code, and you can expect that to be:
0 - success
1 - failure
2 - abject failure

So, for example, the grep utility returns a status as follows:
0 - found what you were looking for!
1 - nothing found
2 - sorry - couldn't even read the input file
(written 2006-08-10)

 
Associated topics are indexed under
A167 - Web Application Deployment - Shell Programming (bash)
  [1904] Ruby, Perl, Linux, MySQL - some training notes - (2008-11-23)
  [1527] Selecting file names in a shell - one word or another - (2008-02-02)
  [1468] Lexical v Arithemetic testing, Bash and Perl - (2007-12-11)
  [1345] Perl and Shell coding standards / costs of an IT project - (2007-09-11)
  [1287] Work and play at Well House Manor - Football and Shell Shortcuts - (2007-08-02)
  [749] Cottage industry or production line data handling methods - (2006-06-07)
  [64] Shell Script for CGI on the web - (2004-09-26)
  [63] Almost like old times - (2004-09-26)


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