I did implement the repetion for safety which prevents sequences else where matching 'x ' from being flagged.
Ok, so when I use ls -aLl, it will replace all the files that were represented by a symbolic link (link a windows shortcut) with the information from the actual file. Which is probably better since symbolic links all have the same permissions were as the actual file may not.
So I now have:
I don't know if I should use [:graph:] but most tutorials reccommend the "." whenever I can and I though [:graph:] would do the trick.
guys,
my requirment goes like this:
I have a file, and wish to filter out records where
1. The first letter is o or O
and
2. The next 4 following letter should not be ther
I do not wish to use pipe and wish to do it in one shot.
The best expression I came up with is:
grep ^*... (10 Replies)
When i do ls -ld RT_BP* i am getting the following list.
drwxrwx--- 2 user group 256 Oct 17 10:09 RT_BP809
drwxrwx--- 2user group 256 Oct 17 10:09 RT_BP809.O
drwxrwx--- 2 user group 256 Oct 17 10:09 RT_BP810
drwxrwx--- 2user group 256 Oct... (2 Replies)
Hi, guys. I have one question, hope somebody can give me a hand
I have a file called passwd, the contents of it arebelow:
***********************
...
goldsimj:x:5008:200:
goldsij2:x:5009:200:
whitej:x:5010:201:
brownj:x:5011:202:
goldsij3:x:5012:204:
greyp:x:5013:203:
...... (6 Replies)
please can someone tell me what the following regrex means
grep "^aa*$" <file>
I thought this would match any word beginning with aa and ending with $, but it doesnt.
Thanks in advance
Calypso (7 Replies)
Hello,
This is my first post so, Hello World! Anyways, I'm learning how to use unix and its quickly become apparent that a strong foundation in regular expressions will make things easier. I'm not sure if my syntax is messing things up or my logic is messing things up.
ps -e | grep... (4 Replies)
Hello,
I'm working on learning regular expressions and what I can do with them. I'm using unix to and its programs to experiment and learn what my limitations are with them.
I'm working on duplicating the regular expression:
^(.*)(\r?\n\1)+$
This is supposed to delete duplicate lines... (2 Replies)
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)
Hi ,
I have few lines like
A20120101.ANU.ZIP
A20120401.ABC.ZIP
A20120105.KJK.ZIP
A20120809.JUG.ZIP
A20120101.MAT.ZIP
B20120301.ANU.XIP
I want to filter by
1. Files starting with A and Ending With Z ( ^A.*.ZIP$)
2. And either ANU, or KJK or MAT in the file name.
Hope my... (6 Replies)
I want to track only below:
I am using below, but it doesn't work: (6 Replies)
Discussion started by: proactiveaditya
6 Replies
LEARN ABOUT OSX
acyclic
ACYCLIC(1) General Commands Manual ACYCLIC(1)NAME
acyclic - make directed graph acyclic
SYNOPSIS
acyclic [ -nv? ] [ -o outfile ] [ file ]
DESCRIPTION
acyclic is a filter that takes a directed graph as input and outputs a copy of the graph with sufficient edges reversed to make the graph
acyclic. The reversed edge inherits all of the attributes of the original edge. The optional file argument specifies where the the input
graph is stored; by default, the program reads from stdin.
OPTIONS
The following options are supported:
-n No output is produced, though the return value will indicate whether the graph is acyclic or not.
-v Print information about whether the file is acyclic, has a cycle or is undirected.
-o outfile
causes the output to be written to the specified file; by default, output is written to stdout.
-? option causes the program to print usage information.
RETURN CODES
acyclic returns 0 if the graph is acyclic; 1 if the graph has a cycle; 2 if the graph is undirected; and 255 if there are any errors.
BUGS
If the graph is strict and there is a cycle of length 2, the attributes of the reversed edge are lost.
Some edge attributes are non-symmetric, referring to either the head or tail node. At present, there is no mechanism or convention for cor-
rectly switching or renaming these.
AUTHORS
Stephen C. North <north@research.att.com>
Emden R. Gansner <erg@research.att.com>
SEE ALSO gc(1), dot(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1), libgraph(3)
21 March 2001 ACYCLIC(1)