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 BSD
ln
LN(1) General Commands Manual LN(1)NAME
ln - make links
SYNOPSIS
ln [ -s ] sourcename [ targetname ]
ln [ -s ] sourcename1 sourcename2 [ sourcename3 ... ] targetdirectory
DESCRIPTION
A link is a directory entry referring to a file; the same file (together with its size, all its protection information, etc.) may have
several links to it. There are two kinds of links: hard links and symbolic links.
By default ln makes hard links. A hard link to a file is indistinguishable from the original directory entry; any changes to a file are
effective independent of the name used to reference the file. Hard links may not span file systems and may not refer to directories.
The -s option causes ln to create symbolic links. A symbolic link contains the name of the file to which it is linked. The referenced
file is used when an open(2) operation is performed on the link. A stat(2) on a symbolic link will return the linked-to file; an lstat(2)
must be done to obtain information about the link. The readlink(2) call may be used to read the contents of a symbolic link. Symbolic
links may span file systems and may refer to directories.
Given one or two arguments, ln creates a link to an existing file sourcename. If targetname is given, the link has that name; targetname
may also be a directory in which to place the link; otherwise it is placed in the current directory. If only the directory is specified,
the link will be made to the last component of sourcename.
Given more than two arguments, ln makes links in targetdirectory to all the named source files. The links made will have the same name as
the files being linked to.
SEE ALSO rm(1), cp(1), mv(1), link(2), readlink(2), stat(2), symlink(2)4th Berkeley Distribution April 10, 1986 LN(1)