Hi
I have a file with data arranged into columns. The first column is the chromosome name.
When I use grep to subset only rows with chr1, I get chr1 but also chr10, chr11,..
How do I get only rows with chr1?
grep chr1 filein > fileout
head fileout
chr1 59757841
chr11 108258691 ... (2 Replies)
Hi,
I'm struggling with a regex that would match a 'b' that follows an 'a' and is at the end of a string of non-white characters. For example:
Line 1: aba abab b abb aab bab baa
I can find the right strings but I'm lacking knowledge of how to "discard" the bits that precede bs.... (2 Replies)
Hi all,
any idea how to match the following:
char*<no or any string or space> buf and
char *<no or any string or space> buf
i need to capture the buf characters too.
currently i need two checks to cover this:
#search char* <any string> buf or char *<any string> buf
@noarray =... (2 Replies)
I am trying to match a similar line using grep with regular expression
the line is
/remote/mac/pbbbb/abc/def/hij/hop/include/abc/tif/element/test/testfiles/Office.cpp:57: const OfficeType& getType().get() const;
I just need to extract the bold characters using grep with regular expression.... (5 Replies)
Hi FolksI want to write a nawk script that dynamically creates variable numbers of regular expressions on the fly rather than using constants. Is this possible?They would need to be used within an if statement within the nawk program: - if ( "my string of regex's" ) Thanks (7 Replies)
hi everyone
suppose we have two scenario
echo ABCD | grep \{4\}
DATE
echo SYSDATE | grep \{4\}
SYSDATE
i want to match the string of four length only please help (5 Replies)
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Hi Everybody!
I need some help with a regular expression in Perl that will match files named messages, but also files named message.1, message.2 and so on. So really I need one that will find messages and messages that might be followed by a period and a digit without matching other files like... (2 Replies)
I cannot seem to get this to work correct:
my ($k, $v) = split(/F/, $fc{$DIR}{symbolic}, 2);
Below is the input (the $fc{$DIR}{symbolic} variable):
QMH2562 FW:v5.06.03 DVR:v8.03.07.15.05.09-kbut i also need it to break on FV:
Emulex NC553i FV4.2.401.6 DV8.3.5.86.2pthe code above... (2 Replies)
echo 20110101 | awk '{ print match($0,/^((17||18||19||20)|)-*(|0|1)-*(|0||3)$/))
I am getting a match for the above, where as it shouldn't, as there is no hyphen in the echoed date.
Another question is what is the difference between || and | in the above statement (4 Replies)
Discussion started by: tostay2003
4 Replies
LEARN ABOUT DEBIAN
get_progname
ERRORMSG(3pub)ERRORMSG(3pub)NAME
errormsg, set_progname, get_progname - printing error messages
SYNOPSIS
#include <errormsg.h>
void errormsg(int exitp, int eno, const char *fmt, ...);
void set_progname(const char *argv0, const char *def);
const char *get_progname(void);
DESCRIPTION
The errormsg function is used for printing error messages. It is a like a combination of fprintf(3) and perror(3), in that it makes it
easy to add arbitrary, printf-like formatted text to the output, and makes it easy to include the system's error message (the error string
corresponding to the eno parameter). Unlike perror, this function does not get the error code directly from errno, thus making it easier
to do something else that might set it before printing out the error message. errormsg also adds the name of the program to the output, if
known.
The first argument to errormsg should be 0 (don't exit program), 1 (exit program with exit(EXIT_FAILURE)) or 2 (with abort()). The second
one should be 0 (don't print system error message), positive (print error message corresponding to the error code), or -1 (print the error
message corresponding to errno).
The set_progname function sets the program name. You need to call this function with at least one non-NULL parameter to get the program
names included in the output. If either argument is non-NULL, it should point at strings that have static duration, i.e. they exist until
the program terminates (or at least until the last error message has been printed); this is so that it is not necessary to create a copy of
the name. (Either or both arguments can also be NULL.)
If the first argument is non-NULL, that is used as the name, otherwise the seconds argument is used. If both are NULL, no program name is
included in the output. The reason for having two arguments is so that the caller doesn't have to do the test, and can just call
set_progname(argv[0], "default_name");
(it is valid for argv[0] to be NULL, under ISO C).
The get_progname function returns a pointer to the current name of the program, as set by set_progname. If get_progname returns NULL, then
no name has been set and none is included in the output. This function is included for completeness, it is not really expected to be use-
ful.
SEE ALSO publib(3)AUTHOR
Lars Wirzenius (lars.wirzenius@helsinki.fi)
ERRORMSG(3pub)