01-06-2010
Regular expression (regex) required
I want to block all special characters except alphanumerics.. and "."(dot ) character
currently am using /[^a-zA-Z.]/
I want to even block only single dot or multiple dots..
ex:
. or .............. should be blocked.
please provide me the reg ex.
---------- Post updated at 05:11 AM ---------- Previous update was at 04:19 AM ----------
am trying =>[^a-zA-Z .{1}] . this is not working
Please provide me the solution asap
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant.
THX! (2 Replies)
Discussion started by: Z0mby
2 Replies
2. Linux
Regular expression to extract "y" from "abc/x.y.z" (2 Replies)
Discussion started by: rag84dec
2 Replies
3. UNIX for Advanced & Expert Users
I have a large file encoded in Unicode that I need to convert to CSV. In general, I know how to do this by regular expression substitutions using sed or Perl, but one problem I am having is that I need to put a quotation mark at the end of each line to protect the last field. The usual regex... (1 Reply)
Discussion started by: thomas.hedden
1 Replies
4. Shell Programming and Scripting
CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error.
source $CA_VERSION_DATA
if * ]
then
echo "CA_RELESE $CA_RELEASE is invalid"
exit -1
fi
+ source /etc/ncgl/ca_version_data
++ CA_PRODUCT_ID=samxts
++ CA_RELEASE=6
++ CA_WEEK_NO=7
++... (3 Replies)
Discussion started by: ketkee1985
3 Replies
5. Shell Programming and Scripting
Hi,
I have written a small perl script to handle particular date format using perl, but it is not substituting the whole string. Can some one please check on what is the issue with the code.
$_ = "Date: November 25, 2010 09:02:01 PM";... (1 Reply)
Discussion started by: sarbjit
1 Replies
6. Programming
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Discussion started by: jessy83
1 Replies
7. Shell Programming and Scripting
Hi All,
I have a sftp session log where I am transferring multi files by issuing "mput abc*.dat". The contents of the logfile is below -
#################################################
Connecting to 10.75.112.194...
Changing to: /home/dasd9x/testing1
sftp> mput abc*.dat
Uploading... (7 Replies)
Discussion started by: k_bijitesh
7 Replies
8. Emergency UNIX and Linux Support
Hi,
Server - MEDIAWIKI - MYSQL - CENTOS 5 - PHP5
I have a database import of close to a million pages into my wiki, mediawiki site,
the format that were left with is not pretty, and I need to find a way to clean this up and present it nicely...
I think regex is the best option as I can... (1 Reply)
Discussion started by: lawstudent
1 Replies
9. UNIX for Advanced & Expert Users
Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
problem_arr=(PRS111 PRS213 PRS234)
j=0
while } ]
do
k=`expr $j + 1`
sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt
---some operation goes... (11 Replies)
Discussion started by: InduInduIndu
11 Replies
10. Shell Programming and Scripting
1 1982 1 testing init.cc 3001 Apr 25 2014 09:56:13.617
Task(0x5bac5060) tRestart (stack st:0x5bace000, end:0x5bac8000) deleted
1 1982 1 testing init.cc 3001 Apr 25 2014 09:56:13.628
Task(0x5bac5060) tRestart (stack st:... (12 Replies)
Discussion started by: VSSajjan
12 Replies
LEARN ABOUT XFREE86
truncate
TRUNCATE(1) User Commands TRUNCATE(1)
NAME
truncate - shrink or extend the size of a file to the specified size
SYNOPSIS
truncate OPTION... FILE...
DESCRIPTION
Shrink or extend the size of each FILE to the specified size
A FILE argument that does not exist is created.
If a FILE is larger than the specified size, the extra data is lost. If a FILE is shorter, it is extended and the extended part (hole)
reads as zero bytes.
Mandatory arguments to long options are mandatory for short options too.
-c, --no-create
do not create any files
-o, --io-blocks
treat SIZE as number of IO blocks instead of bytes
-r, --reference=RFILE
base size on RFILE
-s, --size=SIZE
set or adjust the file size by SIZE bytes
--help display this help and exit
--version
output version information and exit
The SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (pow-
ers of 1000).
SIZE may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round
down to multiple of, '%' round up to multiple of.
AUTHOR
Written by Padraig Brady.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report truncate translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
dd(1), truncate(2), ftruncate(2)
Full documentation at: <http://www.gnu.org/software/coreutils/truncate>
or available locally via: info '(coreutils) truncate invocation'
GNU coreutils 8.28 January 2018 TRUNCATE(1)