08-21-2019
Check if string contains substring surrounded by numbers
Hi,
I have a process that generates strings.
I would like to check each string and search for substring which contains the letter 'E' surrounded by numbers (both sides of the letter 'E').
few examples:
AA4E7012A2 - contains E surrounded by numbers
FE18274012 - does not contain E surrounded by numbers
49EFCE8FC3 - does not contain E surrounded by numbers
F3DCD73EA1 - does not contain E surrounded by numbers
957FF564E7 - contains E surrounded by numbers
I tried few options of using the next check without much success: ^[[:digit:]]*[[:alpha:]]*[[:digit:]]*$
please advise.
Thanks,
YE
Last edited by rbatte1; 08-21-2019 at 01:25 PM..
Reason: Added ICODE tags
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LEARN ABOUT NETBSD
memmem
MEMMEM(3) BSD Library Functions Manual MEMMEM(3)
NAME
memmem -- locate substring in byte string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
void *
memmem(const void *block, size_t blen, const void *pat, size_t plen);
DESCRIPTION
The memmem() function locates the first occurrence of the binary string pat of size plen bytes in the byte string block of size blen bytes.
RETURN VALUES
The memmem() function returns a pointer to the substring located, or NULL if no such substring exists within block.
If plen is zero, block is returned, i.e. a zero length pat is deemed to match the start of the string, as with strstr(3).
SEE ALSO
bm(3), memchr(3), strchr(3), strstr(3)
STANDARDS
The memmem() function is not currently standardized. However, it is meant to be API compatible with functions in FreeBSD and Linux.
HISTORY
memmem() first appeared in the Free Software Foundation's glibc library.
BSD
March 12, 2005 BSD