how do you print the lines that contain integers only, using grep or awk?
thanks ,
apalex
------------------
this file below:
qwerty
01234
asdfgh
01234
qwer12
asdf05
will be:
01234
01234
qwer12
asdf05 (5 Replies)
Hi,
I am trying to write a script to extract multiple sets of data from a chemistry output file. The problem section is in the following format...
Geometry "geometry" -> "geometry"
1 Pd 46.0000 -0.19290971 0.00535260 0.02297606
2 P ... (7 Replies)
Srr for being pain her
let say i have a data in a file like this
1@1000
2@2000
4@4000
5@7770
6@8998
7@80008
i am a newbie in Unix
i need to add a comma to integer using AWK function. for example, 1,000 or 80,008
how can i do that
ps. i'm using bash shell (1 Reply)
I need to extract a value from a text file into a ksh script, and change the last two letters to "00". awk gets the right value (2500 in this example), but the variable has no value.
I use the following command:
StartTime=expr nawk 'NR==20 {print $11;exit}' $New_FILE
echo 1 $StartTime... (4 Replies)
Hi guys, I asked for help on programming forums and no one didn't helped me so I ask for help here. I am playing with some tasks from my book and I can't figure where did I get wrong.
From the first program I get a blank screen, program won't generate 10*10 matrix.
And second problem is I... (6 Replies)
I would like to extract a number from $0 and calculate if it can be devided by 25. Though the number can also be less then 25 or bigger than 100. How do i extract the number and how can the integer be calculated?
String:
"all_results">39</span>I am looking for the number between "all_results"> ... (5 Replies)
HI Folks,
I'm looking for a solution for this issue.
I want to find the Pattern 0/ and replace it with /. I'm just removing the leading zero. I can find the Pattern but it always puts literal value as a replacement.
What am I missing??
sed -e s/0\//\//g File1 > File2
edit by... (3 Replies)
In the tab-delimited input below I am trying to use awk to -10 from $2 and +10 to $3. Something like
awk -F'\t' -v OFS='\t' -v s=10 '{split($4,a,":"); print $1,$2-s,$3+s,a,$5,$6} | awk {split(a,b,"-"); print $1,$2-s,$3+s,b-s,b+s,$5,$6}' input
should do that. I also need to -10 from $4... (2 Replies)
Hi,
0.23 2.94% 0.00 0.00% 17.8G 55.7% 19.6G 40.9% 630 0.00%
0.06 0.77% - - 7524M 22.9% 15.6G 32.6% - -
From the above sample output. I need to compare whether the 6th field is more than 10G..if so print the entire line. Here the 6th field is memory
TIA (5 Replies)
Hi Folks -
Linux Version = Linux 2.6.39-400.128.17.el5uek x86_64
I have a process that determines the start and end load periods for an Oracle data load process.
The variables used are as follows follows:
They are populated like such:
However, the load requires the month to be the... (11 Replies)
Discussion started by: SIMMS7400
11 Replies
LEARN ABOUT DEBIAN
env::ps1
Env::PS1(3pm) User Contributed Perl Documentation Env::PS1(3pm)NAME
Env::PS1 - prompt string formatter
SYNOPSIS
# use the import function
use Env::PS1 qw/$PS1/;
$ENV{PS1} = 'u@h $ ';
print $PS1;
$readline = <STDIN>;
# or tie it yourself
tie $prompt, 'Env::PS1', 'PS1';
# you can also tie a scalar ref
$format = 'u@h$ ';
tie $prompt, 'Env::PS1', $format;
DESCRIPTION
This package supplies variables that are "tied" to environment variables like 'PS1' and 'PS2', if read it takes the contents of the
variable as a format string like the ones bash(1) uses to format the prompt.
It is intended to be used in combination with the various ReadLine packages.
EXPORT
You can request for arbitrary variables to be exported, they will be tied to the environment variables of the same name.
TIE
When you "tie" a variable you can supply one argument which can either be the name of an environement variable or a SCALAR reference. This
argument defaults to 'PS1'.
METHODS
"sprintf($format)"
Returns the formatted string.
Using this method all the time is a lot less efficient then using the tied variable, because the tied variable caches parts of the
format that remain the same anyway.
FORMAT
The format is copied mostly from bash(1) because that's what it is supposed to be compatible with. We made some private extensions which
obviously are not portable.
Note that this is not the prompt format as specified by the posix specification, that would only know "!" for the history number and "!!"
for a literal "!".
Apart from the escape sequences you can also use environment variables in the format string; use $VAR or "${VAR}".
The following escape sequences are recognized:
a The bell character, identical to "