I'm looking to isolate the first occurrence of an arbitrary substring which may be present at any particular line in a given file. The enclosing end markers for the target in our thought problem are string" and ". The complete string and surrounding text could look something like this,
...with 1.2.3.4.5.6 being our target substring.
To scrape this problem off my plate, I've tried numerous approaches; including things like
...with much hair loss and screen damage
On OS 10.4.11
I have filenames like:
670711 SA T2 v1-1_DS_EF.doc
CT_670520 AM T1 v1-2_DS_EF.doc
CT_670716 - 2 SA T4 v1-2_DS_EF.doc
CT_670713 SA T3 v1-1_DS_EF.doc
670421 PA DYP1 v1-1_DS_EF.doc
CT_670425 PA DYP2 v1-1_DS_EF.doc
CT_670107 RA T3 v1-2_DS_EF.doc
CT_670521 AM T2 v1-2_DS_EF.doc... (3 Replies)
Hi,
I have looked all over for this. I am attempting to get a the substring of a string using sed since it seemed the best solution for this.
For example my string is: "zzz foo to you and bar123 or foo"
I would like to extract the text between "and" and "or" (it could be anything, but... (2 Replies)
Hi All,
Input=abcDEF_1.6k1
I need to use ‘sed' command to get 1.6 value and store to some variable from the given input.
Please help me in getting the command.
Regards,
Kalai (2 Replies)
I am trying to get a substring from a string stored in a variable. I tried sed with a bit help from this forum, but not successful. Here is my problem.
My string is: "REPLYFILE=myfile.txt"
And I need: myfile.txt (everything after the = symbol).
My string is: "myfile.txt.gz.20091120.enc... (5 Replies)
Hi Folks,
I am here with a simple doubt. I am having a flat file in which I want to replace the characters from say 5 to 15 as some text.
Flat file contains a single line.
For example
01MRRAJESH21000RAJESH INDUSTRIES
In the above line pos 16-21 is Rajesh, I want to search for the... (4 Replies)
Hi All,
I have a log file in which name and version of applications are coming in the following format
name
It may look like following, based on the name of the application and version:
XYZ OR xyz OR XyZ OR xyz
I want to separate out the name and version and store them into variables.... (4 Replies)
HI All,
I have a file which looks like below
./Prod_id/rel/prod/lib.a
./Some_text/rel/fld/lib.a
./Some_text/deb/detail/lib.a
./Some_text/deb/err/lib.a
./Some_text/rel/prod/lib.a
./Some_text/rel/fld/lib.a
./Some_text/deb/detail/lib.a
./Some_text/deb/err/lib.a
I want... (5 Replies)
I'm attempting to replace a substring that contains a hyphen and not having much success, can anyone point out where i'm going wrong or suggest an alternative.
# echo /var/lib/libvirt/images/vm888b-clone.qcow | sed -e 's|vm888-clone|qaz|g'
/var/lib/libvirt/images/vm888b-clone.qcow (1 Reply)
i have this data where i am looking for a two digit number 01,03,05 or 07.
if not found i should detect that .
this sed command gives me the matching rows . I want the opposite , i want the rows if the match is NOT found .
also the sed command is only looking for 01, can i add 03, 05, 07 to... (7 Replies)
Discussion started by: boncuk
7 Replies
LEARN ABOUT SUSE
memmem
MEMMEM(3) Linux Programmer's Manual MEMMEM(3)NAME
memmem - locate a substring
SYNOPSIS
#define _GNU_SOURCE
#include <string.h>
void *memmem(const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen);
DESCRIPTION
The memmem() function finds the start of the first occurrence of the substring needle of length needlelen in the memory area haystack of
length haystacklen.
RETURN VALUE
The memmem() function returns a pointer to the beginning of the substring, or NULL if the substring is not found.
CONFORMING TO
This function is a GNU extension.
BUGS
This function was broken in Linux libraries up to and including libc 5.0.9; there the needle and haystack arguments were interchanged, and
a pointer to the end of the first occurrence of needle was returned.
Both old and new libc's have the bug that if needle is empty, haystack-1 (instead of haystack) is returned. And glibc 2.0 makes it worse,
returning a pointer to the last byte of haystack. This is fixed in glibc 2.1.
SEE ALSO strstr(3), feature_test_macros(7)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2008-12-05 MEMMEM(3)