02-11-2013
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
Could you please explain me the below statement -- phrase wise.
sed -e :a -e '$q;N;'$cnt',$D;ba' abc.txt > xyz.txt
if suppose $cnt contains value: 10
it copies last 9 lines of abc.txt to xyz.txt
why it is copying last 9 rather than 10.
and also what is ba and $D over there in... (4 Replies)
Discussion started by: subbukns
4 Replies
2. Shell Programming and Scripting
I want to write a line to a log file for each mountpoint that is above 75% disk space used.
I have written the following so far which doesn't take into account the checking for 75% yet but simply tries to write a line for every mountpoint into the logfile.
#!/bin/ksh
PERCENTAGES=`bdf | grep... (1 Reply)
Discussion started by: petachi
1 Replies
3. UNIX for Dummies Questions & Answers
Hello!
I want to read a file line by line and have each line in a variable. I have found the following code.
#!/bin/bash
exec 3< data
while read <&3
do echo "The number is $REPLY"
a.out "$REPLY"
done
exec 3>&-
I don't understand the use of exec and its arguments, though having read... (3 Replies)
Discussion started by: myle
3 Replies
4. Solaris
hi this is the output of showrev command from my sun blade 150 machine.
bash-3.00# showrev
Hostname: u15_9
Hostid: 83685284
Release: 5.10
Kernel architecture: sun4u
Application architecture: sparc
Hardware provider: Sun_Microsystems
Domain: sun.com
Kernel version: SunOS 5.10... (1 Reply)
Discussion started by: kingston
1 Replies
5. Shell Programming and Scripting
Hi all,
I'm very new to UNIX. I have got a coding, where i dont understand the below part. Could someone please explain it in detail?
awk 'NR > 1; NR == 1 { S = $0 } END { print S }' $textfile.bak > $textfile
could someone explain what
awk 'NR > 1; NR == 1 { S = $0 } END { print S }'
... (1 Reply)
Discussion started by: raghulshekar
1 Replies
6. Programming
Could someone explain why Python 3.1 errors out below? Do I need an additional module that's not required in 3.2 perhaps? I need to use 3.1 as it's the version available on a server I am using.
Python 3.2.1rc1 (default, May 18 2011, 11:01:17)
on linux2
Type "help", "copyright", "credits"... (0 Replies)
Discussion started by: jelloir
0 Replies
7. Shell Programming and Scripting
Hi All,
I got stuck up with shell script where i use awk. The scenario which i am working on is as below.
I have a file text.txt with contents
COL1 COL2 COL3 COL4
1 A 500 400
1 B 500 400
1 A 500 200
2 A 290 300
2 B 290 280
3 C 100 100
I could able to sum col 3 and col4 based on... (3 Replies)
Discussion started by: imsularif
3 Replies
8. UNIX for Advanced & Expert Users
grep -E '^(++){5}5000' <file_name>
this command searches value 5000 in only 6th column from provided file where pipe ( | )is delimiter which separate columns... can some one plz explain me what '^(++){5}5000' actually does..? :confused: (1 Reply)
Discussion started by: Killer420
1 Replies
9. Shell Programming and Scripting
Hey Friends, its me again! :o
I was asked to create a script that would go into our backup directories and delete/purge anything in the directory after a certain amount of days, normally I would be able to write something up that goes to the directory finds it and deletes it.
cd... (12 Replies)
Discussion started by: gkelly1117
12 Replies
10. UNIX for Beginners Questions & Answers
#!/bin/bash
n=$l; typeset -a v
x=$(< input.dat)
check(){
if; then
sed 's/Test/Proc/g' file.sh >fl.sh
else
exit 13
fi
}
check $n
while ; do
x=`expr $x -l`
v=$x
done
less fi.sh l>/dev/null&& echo yes || exit 1
echo v= ${v
}
exit 0
I have file.sh and input.dat in the current... (3 Replies)
Discussion started by: bananasprite
3 Replies
LEARN ABOUT MOJAVE
uri::url
URI::URL(3) User Contributed Perl Documentation URI::URL(3)
NAME
URI::URL - Uniform Resource Locators
SYNOPSIS
$u1 = URI::URL->new($str, $base);
$u2 = $u1->abs;
DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to
be distributed with the libwww-perl library.
The following differences exist compared to the "URI" class interface:
o The URI::URL module exports the url() function as an alternate constructor interface.
o The constructor takes an optional $base argument. The "URI::URL" class is a subclass of "URI::WithBase".
o The URI::URL->newlocal class method is the same as URI::file->new_abs.
o URI::URL::strict(1)
o $url->print_on method
o $url->crack method
o $url->full_path: same as ($uri->abs_path || "/")
o $url->netloc: same as $uri->authority
o $url->epath, $url->equery: same as $uri->path, $uri->query
o $url->path and $url->query pass unescaped strings.
o $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters)
o $url->params and $url->eparams methods
o $url->base method. See URI::WithBase.
o $url->abs and $url->rel have an optional $base argument. See URI::WithBase.
o $url->frag: same as $uri->fragment
o $url->keywords: same as $uri->query_keywords
o $url->localpath and friends map to $uri->file.
o $url->address and $url->encoded822addr: same as $uri->to for mailto URI
o $url->groupart method for news URI
o $url->article: same as $uri->message
SEE ALSO
URI, URI::WithBase
COPYRIGHT
Copyright 1998-2000 Gisle Aas.
perl v5.18.2 2012-02-11 URI::URL(3)