I strongly suggest reading my post before blindly running my code, since running my code on .m files may destroy them. Never overwrite your originals; that's a recipe for disaster. One mistake and all your code is blown away. Rename your .m files into .pm. Use it to generate .m files from .pm's.
Quote:
Originally Posted by Corona688
Never overwrite your originals; that's a recipe for disaster. One mistake and all your code is blown away.
I'd suggest renaming your '.m' files into '.pm' files instead. Create '.m' files out of your '.pm' files when you process them.
in shell scripting there is extensive usage of
i> regular expression
ii>sed
iii>awk
can anyone tell me the suitable contexts ...i mean which one is suitable for what kind of operation.
like the reg-exp and sed seems to be doing the same job..i.e pattern matching (1 Reply)
$ cat file.txt
asd
<AA>dev
<LL>def
<RR>sha
This works for me:
$ sed -r 's/^ .*<LL>def/\t<LL>my/' file.txt
asd
<AA>dev
<LL>my
<RR>sha
But, this does not work for me:
$ sed -r 's/^\s+<LL>def/\t<LL>my/' file.txt
asd
... (1 Reply)
Hi, I need
to make some extraction . with the following input to get the right output.
input: /etc/exp/home/bin ====> output: exp
and
input: aex1234 ===> output: ex
Thanks for your help, (4 Replies)
Hi,
I am using the following piece of code for extracting some data from in between some tags ...
$text =~ /<TAG1>(.*)<\/TAG1>.*<TAG2>(.*)<\/TAG2>.*<TAG3>(.*)<\/TAG4>.*<TAG5>(.*)<\/TAG5>/;
$tag1=$1;
print "\n$tag1";
But I am getting an error like
Use of uninitialized value in... (1 Reply)
$var1="LEN";
$VAR2="CODLENTT";
now, var2 contains var1(LEN).How do i check this in perl....
whether one string is a part of another..?
if (<logic>)
{
my operation;
}
what'd be the logic.. (4 Replies)
Respected All,
I have a very big xml in that i want to search only below 3 lines.
<target name ="UpgradePrimaryBox" depends ="configureBox1">
<echo> Finished Upgrading Primary Box </echo>
</target>
grep -i "<target.*UpgradePrimaryBox" this gives me the first line.
then i need to match... (7 Replies)
Hi all,
is there anyone good at bash who will help me?
I need to use syntax ${string/pattern/replacement}
The problematic part where I am stuck is:
#!bin/bash
text="A cat is on a mat."
exp="cat"
newexp="SOMECODEcatSOMECODE"
newtext=${${text}/${exp}/${newexp}}
== > ERROR "wrong... (4 Replies)
Hi Unix Gurus,
yesterday I asked a question and got answer, it works fine.
I have one more thing need to help
in the code
awk '{print substr($0,1,3)"xxx"substr($0,7)}' file
If I have 50 charactor's need to be replaced, is there any easy way to use reg exp or I have to input 50 XXXXx......... (12 Replies)
Discussion started by: ken6503
12 Replies
LEARN ABOUT X11R4
readahead
readahead(8) System Manager's Manual readahead(8)NAME
readahead - file preloader for boot process optimization
SYNOPSIS
readahead [options] <file-list> [another-file-list [...]]
DESCRIPTION
readahead is a files preloader designed to optimize the disk I/O during the boot process.
OPTIONS -b, --build
build optimised files list only, without sorting.
-s, --sort
build and sort list of files only (implies -b).
-o, --output <file>
write sorted list of files to file.
-d, --dont-sort
preload files described by an already sorted files list.
-h, --help
print the usage information.
-v, --verbose
enable the verbose mode.
-t, --timing
report time spent on each operation.
-m, --maxsize <max size>
maximum size in KiB a file can be in order to be preloaded, default is 10240.
<file-list> [another-file-list [...]]
One or more files containing the list of files to be preloaded or sorted. The files list can be generated by readahead-collector(8).
FILES
/etc/default/readahead-fedora
SEE ALSO readahead-collector(8), readahead(2),
AUTHORS
Arjan van de Ven <arjan@infradead.org>,
Ziga Mahkovec <ziga.mahkovec@klika.si>, Karel Zak <kzak@redhat.com>,
This manual page was written by Raphael Geissert <geissert@debian.org>
July 2011 readahead(8)