Hi,
I have a simple question... In C do we have a standard library function which will return the pointer to a substring at certain offset and having certain length...
Ofcourse we should take care not to access beyond allocated length in the parent string and don't overwrite beyond allocated... (2 Replies)
Hello all,
I am trying to add chunks to my informix dataspace. I have one dataspace ( the rootdbs ) and the new chunk is a raw device. Precisely slice1 on my new external harddisk.
The question is, what should be the offset value. The document says, the offset is used by the engine to... (1 Reply)
Hi,
I want to read a file from a specified offset from the start of file. With the read command, is it possible to do so. Please suggest. Is there any other alternative?
Thanks,
Saurabh (2 Replies)
Function: int fcntl(int fd, int cmd, struct flock * lock)
Data Type: struct flock
This structure is used with the fcntl function to describe a file lock. It has these members:
off_t l_start
This specifies the offset of the start of the region to which the lock applies, and... (1 Reply)
I have read the below from the book bash cookbook.Tail +1 filenames is similar to cat filename
I have tried the same in Ubuntu 11.10 with bash. 4.0 .
I have received error for the Same.
May I know in which system that will work fine ?
Thanks (1 Reply)
Hi ,
I have a .gz file whose contents look like below.
data1^filename1
data2^filename2.
..
.
.
Is it possible to find out the byte offset of each record from the .gz file.
Like in an uncompressed file.
grep -nb "Filename" give the byte offset of the record in this case.
... (4 Replies)
How can I get GMT offset from EST for a particular date(not current date) in unix. For example, user enters date as: 2012-06-25D11:49:37, this is GMT. I have to calculate GMT offset from EST in unix for this input. Thanks in advance.
-Steve (1 Reply)
Dear all,
I want to offset the file numbers. can you please make some awk code or linux code for the same.
Example:
input file names
ANI_WFMASS_PIST00001.gif
ANI_WFMASS_PIST00002.gif
.
.
.
ANI_WFMASS_PIST0000n.gif
offset --> 30
ANI_WFMASS_PIST00031.gif
ANI_WFMASS_PIST00032.gif... (14 Replies)
Discussion started by: kri321shna
14 Replies
LEARN ABOUT DEBIAN
plan9-grep
GREP(1) General Commands Manual GREP(1)NAME
grep, g - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
g [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines that match the pattern, a regular expression as defined in regexp(7) with
the addition of a newline character as an alternative (substitute for |) with lowest precedence. Normally, each line matching the pattern
is `selected', and each selected line is copied to the standard output. The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-e The following argument is taken as a pattern. This option makes it easy to specify patterns that might confuse argument parsing,
such as -n.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
-f The pattern argument is the name of a file containing regular expressions one per line.
-b Don't buffer the output: write each output line as soon as it is discovered.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'. An expression starting with '*' will treat the rest of the expression as literal characters.
G invokes grep with -n and forces tagging of output lines by file name. If no files are listed, it searches all files matching
*.C *.b *.c *.h *.m *.cc *.java *.cgi *.pl *.py *.tex *.ms
SOURCE
/src/cmd/grep
/bin/g
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(7)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)