It would be really thankful if you can share the significance of [[:space:]] character.
The character class space contains the following characters in the POSIX and C locales: <space>, <tab>, <form-feed>, <carriage-return>, <newline>, and <vertical-tab>. For what you are doing here, I would tend to use the character class blank which only contains the <space> and <tab> characters rather than the character class space:
This User Gave Thanks to Don Cragun For This Post:
Hi,
Suppose I have a file which contains many lines,
----------------------
wake up
study hard
play a little
getting hungry <---- insert a line after this line
watch TV
go shopping
come back home
getting hungry <--- insert a line after this line
listen music
surf internet
go to... (2 Replies)
Hi
Is there any command where we can insert a line "2|||" before every line starting with "3|"
my input is as follows
1|ETG|12345
3|79.58|||GBP||
1|ETG|12345
3|79.58|||GBP||
1|ETG|12345
2|EN_GB||Electrogalvanize 0.5 m2 ( Renault )
1|ETG|12345
3|88.51|||GBP||
desired output... (10 Replies)
this is utterly embarassing :(
after posting here i revisited my files and found that when i used "vi" instead of a gui based editor, i suddenly found that the indentations were in fact wrong :(
sorry about this :( (0 Replies)
Friends ,
I have a large file and i need to insert a line after every line.I am actually unaware how to do it.Any help appreciated.
My File
control station *ATM* , qread $OSS.Jul13A.FI01 interval 1 intcount 1
control station *ATM* , qread $OSS.Jul13A.FI02 interval 1 intcount... (4 Replies)
I use zentyal for my server admin, which is great but zentyal auto-generates config file on boot and hence overwrites any changes made directly to config files. In order to allow multiple user access to a MS ACCESS database, I need to customise the smb.conf file and add the following line to the... (9 Replies)
Dear UNIX community,
I would like to to count characters from a specific row and have them displayed line-by-line.
I have a file called testAwk2.csv which contain the following data:
rabbit penguin goat
giraffe emu ostrich I would like to count in the middle row individually... (4 Replies)
Say the input was as follows:
Brat 20 x 1000 32rf
Pour 15 p 1621 05pr
Dart 10 z 1111 22xx
My program prompts for an input, what I want is to use the input to locate a specific field. Like if I type in, "Pou" then it would return "Pour" and just "Pour"
I currently have this line but it is... (6 Replies)
my requirement is,
consider a file output
cat output
blah sdjfhjkd jsdfhjksdh
sdfs 23423 sdfsdf sdf"sdfsdf"sdfsdf"""""dsf
hellow there
this doesnt look good
et cetc etc
etcetera
i want to replace a line of line number 4 ("this doesnt look good") with some other line
... (3 Replies)
ISWBLANK(3) Linux Programmer's Manual ISWBLANK(3)NAME
iswblank - test for whitespace wide character
SYNOPSIS
#include <wctype.h>
int iswblank(wint_t wc);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
iswblank():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
DESCRIPTION
The iswblank() function is the wide-character equivalent of the isblank(3) function. It tests whether wc is a wide character belonging to
the wide-character class "blank".
The wide-character class "blank" is a subclass of the wide-character class "space".
Being a subclass of the wide-character class "space", the wide-character class "blank" is disjoint from the wide-character class "graph"
and therefore also disjoint from its subclasses "alnum", "alpha", "upper", "lower", "digit", "xdigit", "punct".
The wide-character class "blank" always contains at least the space character and the control character ' '.
RETURN VALUE
The iswblank() function returns nonzero if wc is a wide character belonging to the wide-character class "blank". Otherwise, it returns
zero.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
+-----------+---------------+----------------+
|Interface | Attribute | Value |
+-----------+---------------+----------------+
|iswblank() | Thread safety | MT-Safe locale |
+-----------+---------------+----------------+
CONFORMING TO
POSIX.1-2001, POSIX.1-2008.
NOTES
The behavior of iswblank() depends on the LC_CTYPE category of the current locale.
SEE ALSO isblank(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 2016-03-15 ISWBLANK(3)