Assume I have a text file as below:
me
con pi
ind ken
pras ur
me
con rome
ind kent
pras urs
pintu
con mys
ind pan
pras ki
con kit
ind sys
My requirement,
I need to search for "con rome" and if exists, then print 4th word from rome, i.e in above example, since "con rome"... (4 Replies)
Hello,
I want to retrieve 2, 6, 10, 14...... (each 4 lines apart) from a file that looks like the sample below. In other words, I want only lines corresponding to the Xs.
Header1_a
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Header1_b
yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
Header2_a... (2 Replies)
I want to match the number exactly from the variable which has multiple numbers seperated by pipe symbol similar to search in egrep.below is the code which i tried
#!/usr/bin/perl
my $searchnum = $ARGV;
my $num = "148|1|0|256";
print $num;
if ($searchnum =~ /$num/)
{
print "found";
}... (2 Replies)
So far what i've got is
egrep '^(\\)\*$'No luck.
I've searched the web and not much luck. I know about the escape character \ but its confusing to figure out how to use it to match a backslash and use it to escape the asterisk also. Any ides? Thanks! (8 Replies)
not getting anywhere with this
an xml file contains multiple clients set up with same tags, different values.
I need to parse the file for client foo, and change the value of tag "64bit" from false to true.
cat clients.xml
<Client type"FIX">
<ClientName>foo</ClientName>... (3 Replies)
I'd like to read a file (mydata.dat) line by line. The file consists of 5 columns filled with numbers, like so:
83.018 1.953 49.587 20550.000 353
83.213 1.953 49.195 20600.000 171
84.935 1.954 48.803 20650.000 920
For every read line (i.e. in every... (2 Replies)
echo 'String#1 and String#2' | egrep -o -m 1 'String#.{1}'
String#1
String#2
I'm trying to just match the first occurrence of 'String#' + 1 character. I thought the "-m 1" switch would do that for me. Instead I get both occurrences. Can somebody provide some insight?
Thanks! (5 Replies)
Hi
I need to egrep patterns in a file and limit number of matches to print for each matched pattern.
-m10 option is not working out in my sun solaris 5.10
Please guide me the options to achieve.
if i do head -10 , i wont be getting all pattern match results as output since for a... (10 Replies)
Discussion started by: ananan
10 Replies
LEARN ABOUT FREEBSD
delay.4th
DELAY.4TH(8) BSD System Manager's Manual DELAY.4TH(8)NAME
delay.4th -- FreeBSD debugging boot module
DESCRIPTION
The file that goes by the name of delay.4th is a set of commands designed to add debugging capabilities to loader(8). The commands of
delay.4th by themselves are not enough for most uses. Please refer to the examples below for the most common situations, and to loader(8)
for additional commands.
Before using any of the commands provided in delay.4th, it must be included through the command:
include delay.4th
This line is present in /boot/beastie.4th file, so it is not needed (and should not be re-issued) in a normal setup.
The commands provided by it are:
delay_execute Executes the [string] procedure stored in the delay_command environment variable after loader_delay seconds.
If the optional delay_showdots environment variable is set, a continuous series of dots is printed.
During the duration, the user can either press Ctrl-C (or Esc) to abort or ENTER to proceed immediately.
The environment variables that effect its behavior are:
delay_command
The command to be executed by delay_execute.
loader_delay
The duration (in seconds) to delay before executing delay_command.
delay_showdots
If set, will cause delay_execute to print a continuous series of dots during the delay duration.
FILES
/boot/loader The loader(8).
/boot/delay.4th delay.4th itself.
/boot/loader.rc loader(8) bootstrapping script.
EXAMPLES
Introducing a 5-second delay before including another file from /boot/loader.rc:
include /boot/delay.4th
set delay_command="include /boot/other.4th"
set delay_showdots
set loader_delay=5
delay_execute
SEE ALSO loader.conf(5), beastie.4th(8), loader(8), loader.4th(8)HISTORY
The delay.4th set of commands first appeared in FreeBSD 9.0.
AUTHORS
The delay.4th set of commands was written by Devin Teske <dteske@FreeBSD.org>.
BSD May 18, 2011 BSD