You are providing the regular expression as a string literal. Strings literals have to be parsed. The string parser has its own set of escape sequences. The \\ sequences that you intend for the regular expression are being interpreted by the string parser first, and for each such pair it emits a single backslash. You can confirm this by printing the variable's value.
At a later time, the string-valued variable is used where a regular expression is expected. AWK then passes this string to the regular expression parser for compilation. At this point, the error occurs.
You have two choices. You can double the number of backslases or you can specify the regular expression using a regular expression literal instead of a string literal (/pattern/ instead of "pattern").
Hi,
I have a multiprocess C application (used POSIX library for threads and fork() & exec for creating process) of millions of LOC.
1. Which works fine in single processor machine.
2. Which works fine in multicore machine only if one core is enabled.
Problem is, which results an undefined... (2 Replies)
Dear Unix Forums,
I am hoping you can help me with a pattern matching problem.
What am I trying to do?
I want to replace multiple lines of a text file (that match a multi-line pattern) with a single line of text. These patterns can span several lines and do not always have the same number of... (10 Replies)
We have a mix of AIX, HP-UX, Linux (RHEL and SLES), and Solaris in our environment. Currently we have seperate patch management systems for each platform (NIM, SD, Spacewalk, etc), but have started looking for a centralized patch management solution that would work for most, if not all, of our... (0 Replies)
I know that <cstudio> can also be <stdio> and can be written different ways on Linux then with windows.
I've see some code doing a IFDEF __APPLE__ (I'm guessing, if compiled on a mac do whats between this) Is there one for Linux/Window? (3 Replies)
Hi,
I wish to execute a simple perl script to pass unix commands on a HPUX platform, retrieve the result and filter through the text to determine outcomes x,y and z. I am developing the code on my windows system.
I initially wrote the code to issue UNIX commands line by line, however i soon... (1 Reply)