it looks like it's *trying* to remove tabs and spaces, with a single space.
the items in square brackets are the list of matches it'll look for, the "*" after the square bracket says "0 or more of these". the "$" is end of line.
Rest is pretty self explanatory (I hope)
Honestly, though, I've never had much luck using sed for replacing control characters, I've had much better luck using the "tr" command.
Say that I want to match any of the following:
abc
def
ghi
The letters will either be "abc", "def", or "ghi", only those three patterns. The numbers will vary, but there will only be numbers between the brackets.
I've only been able to match abc, using the following:
abc.*.
I'm... (1 Reply)
Hi guys,
Pretty new to regex, and i know im doing something wrong here. I'm trying to get a regex command that restricts a string to be 8 characters long, and the first character cannot be 0. Here's what i have so far...
echo "01234" | grep "^{8}*$"
Thanks very much!
-Crawf
... (7 Replies)
Hi,
Is there any quick way to use pull out keys that match a specific regex pattern?
eg
%hash ;
$hash(123,456) = xxx;
$hash(123,457) = xxx;
$hash(123,458) = xxx;
$hash(223,459) = xxx;
I need a fast way to get all the keys that start with 123..
Meaning I should get
... (5 Replies)
I am having trouble parsing rpm filenames in a shell script.. I found a snippet of perl code that will perform the task but I really don't have time to rewrite the entire script in perl. I cannot for the life of me convert this code into something sed-friendly:
if ($rpm =~ /(*)-(*)-(*)\.(.*)/)... (1 Reply)
Hi,
Please help me to understand the bold segments in the below regex.
Both are of same type whose meaning I am looking for.
find . \( -iregex './\{6,10\}./src' \) -type d -maxdepth 2
Output:
./20111210.0/src
In continuation to above:
sed -e 's|./\(*.\{1,3\}\).*|\1|g'
Output: ... (4 Replies)
I have the following line of code that works wonders. I just don't completely understand it as I am just starting to learn regex. Can you help me understand exactly what is happening here?
find . -type f | grep -v '^\.$' | sed 's!\.\/!!' (4 Replies)
# echo "Teest string" | sed 's/e*/=>replaced=</'
=>replaced<=Teest string
So, in the above code , sed replaces at the start. does that mean sed using the pattern e* settles to zero occurence ? Why sed was not able to replace Teest string.
# echo "Teest string" | sed 's/e*//g'
Tst string
... (6 Replies)
Hi everyone,
This regex looks simple and yet it doesn't make sense how it's manipulating the output.
ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:0c:49:c2:35:6v
inet addr:192.16.1.1 Bcast:192.168.226.255 Mask:255.255.255.0
inet6 addr:... (2 Replies)
Hi,
I need some guidance with understanding this Perl script below. I am not the author of the script and the author has not leave any documentation. I supposed it is meant to be 'easy' if you're a Perl or regex guru. I am having problem understanding what regex to use :confused: The script does... (3 Replies)
Hello All,
While googling on regex I came across a site named Regulex Regulex：JavaScript Regular Expression Visualizer
I have written a simple regex ^(a|b|c)(*)@(.*) and could see its visualization; one could export it too, following is the screen shot.
... (3 Replies)
Discussion started by: RavinderSingh13
3 Replies
LEARN ABOUT REDHAT
xmtablistinserttabs
XmTabListInsertTabs(library call) XmTabListInsertTabs(library call)
NAME
XmTabListInsertTabs -- A convenience function that inserts tabs into a tab list
SYNOPSIS
#include <Xm/Xm.h>
XmTabList XmTabListInsertTabs(
XmTabList oldlist,
XmTab *tabs,
Cardinal tab_count,
int position);
DESCRIPTION
XmTabListInsertTabs creates a new tab list that includes the tabs in oldlist. This function copies specified tabs to the tab list at the
given position. The first tab_count tabs of the tabs array are added to the tab list. If oldlist is NULL, XmTabListInsertTabs creates a new
tab list containing only the tabs specified.
oldlist Specifies the tab list to add the tabs to. The function deallocates oldlist after extracting the required information.
tabs Specifies a pointer to the tabs to be added to the tab list. It is the caller's responsibility to free the tabs in tabs by using
XmTabFree.
tab_count Specifies the number of tabs in tabs.
position Specifies the position of the first new tab in the tab list. A value of 0 (zero) makes the first new tab the first tab in the tab
list, a value of 1 makes it the second tab, and so on. If position is greater than the number of tabs in oldlist, then the tabs
will be inserted at the end. If position is negative, the count will be backwards from the end. A value of -1 makes the first new
tab the last tab, and so on.
RETURN
If tabs is NULL or tab_count is 0 (zero), this function returns oldlist. Otherwise, it returns a new tab list. The function allocates
space to hold the returned tab list. The application is responsible for managing the allocated space. The application can recover the
allocated space by calling XmTabListFree.
RELATED XmTabList(3) and XmTabListFree(3).
XmTabListInsertTabs(library call)
11-24-2014
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