Hello
I am new to shell scripting and can anyone tell me how to check if there are any special characters in a file. Can i use grep ?
thanks
susie (2 Replies)
Anyone is well-versed to use egrep to search a file for a line containing both:
1) AAA
2) $
I am having problem escaping the dollar sign when using egrep in conjunction with satisfying AAA as well.
E.g. Text file
Line 1 AAA
Line 2 $$$
Line 3 AAA BBB $
Line 4 $$$ BBB AA
will return me... (2 Replies)
We develop a file in windows and move to unix box as a part of deployment. When we do this, we get ctrl-M(^M) character added to the file. So we need to remove ctrl-M(^M) character from all the files from deployment folder and all subfolders folder. Currently we move to individual folders and... (5 Replies)
I am trying to create files with special characters in its filenames for testing purposes. This is on a Linux RHEL4 but this should also be applicable on a Unix shell.
I am able to create files with special characters in the filenames...e.g.
cp -pv foo.gif \*special.gif
cp -pv foo.gif \... (6 Replies)
Hi All,
I have a data file in UNIX which i am trying to load into Oracle table using Oracle SQL Loader.
The problem is, one of the filed contains special character (ex: Square). And due to this reason, my script fails.
Could you please let me know, how to identify which character is... (1 Reply)
Hi I am working on a bash script and would know how to use cut or sed to remove
(F/.M/d h) from a text file.
Before
1 text to save (F/.M/d h)
after
1 text to save
Thanks in advance (5 Replies)
Hello ,
Can anyone help me with my below query
I am trying to find a text in directory of files via below command
grep -i cmps_cgs_crs_rfnc_id *
But it returns multiple times same file name i.e if the text found in a file 4 times the file name shown 4 times in the o/p
Is... (1 Reply)
Hello,
I have some data in output file.In that i need to split the special char "(" and ")" and store it.
This is example of o/p file.
(OHC12345)
(OHC12415)
(OHC12765)
(OHC12545)
I need like
OHC12345
OHC12415
OHC12765
OHC12545
--Thanks (5 Replies)
Hi guys,
I want to know how i can search null value and character value in a feed file.
my file has Pipe delimted records.
for eg:
1|12|xxx|yyy
.
.
.
N records
I know the the which column null and char occurs does it has for eg 3rd column which i can obtain by awk $3 and (7 Replies)
Discussion started by: rohit_shinez
7 Replies
LEARN ABOUT MINIX
iswalnum
ISWALNUM(3) Linux Programmer's Manual ISWALNUM(3)NAME
iswalnum - test for alphanumeric wide character
SYNOPSIS
#include <wctype.h>
int iswalnum(wint_t wc);
DESCRIPTION
The iswalnum() function is the wide-character equivalent of the isalnum(3) function. It tests whether wc is a wide character belonging to
the wide-character class "alnum".
The wide-character class "alnum" is a subclass of the wide-character class "graph", and therefore also a subclass of the wide-character
class "print".
Being a subclass of the wide-character class "print", the wide-character class "alnum" is disjoint from the wide-character class "cntrl".
Being a subclass of the wide-character class "graph", the wide-character class "alnum" is disjoint from the wide-character class "space"
and its subclass "blank".
The wide-character class "alnum" is disjoint from the wide-character class "punct".
The wide-character class "alnum" is the union of the wide-character classes "alpha" and "digit". As such, it also contains the wide-char-
acter class "xdigit".
The wide-character class "alnum" always contains at least the letters 'A' to 'Z', 'a' to 'z' and the digits '0' to '9'.
RETURN VALUE
The iswalnum() function returns nonzero if wc is a wide character belonging to the wide-character class "alnum". Otherwise, it returns
zero.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
+-----------+---------------+----------------+
|Interface | Attribute | Value |
+-----------+---------------+----------------+
|iswalnum() | Thread safety | MT-Safe locale |
+-----------+---------------+----------------+
CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C99.
NOTES
The behavior of iswalnum() depends on the LC_CTYPE category of the current locale.
SEE ALSO isalnum(3), iswctype(3)COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
GNU 2015-08-08 ISWALNUM(3)