Sponsored Content
Top Forums Shell Programming and Scripting Need help on getting the first few characters of a file. Post 302430431 by durden_tyler on Thursday 17th of June 2010 02:30:33 PM
Old 06-17-2010
Code:
$
$ cat f6
9 JACOBS 0175
10 VENDOR_0175
11 JACOBS 0175
100 0175
$
$ awk '{x = x","$1} END{print substr(x,2)}' f6
9,10,11,100
$

tyler_durden
This User Gave Thanks to durden_tyler For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

grepping the first 3 characters from a file

Hi I was wondering if it's possible to use a command to get the first 3 characters of a line in a text file, I tried grep but it returns the whole line but I am only interested in the first 3 characters. Is this possible with grep or I need any other command? Also is it possible deleting from... (2 Replies)
Discussion started by: g-e-n-o
2 Replies

2. UNIX for Dummies Questions & Answers

Rename file based on first 3 characters of data in file

I'm looking to determine if I can use a grep command to read file and rename the file based on the first 3 characters of the data in the file. An example is: Read FileA If the first 3 positions of the data in the file are "ITP", then rename the file as FileA_ITP, else if the first 3... (3 Replies)
Discussion started by: jchappel
3 Replies

3. Shell Programming and Scripting

\r characters in the file

hi I copied a file to unix box from windows. When i run this file it throws error on every command written in that file. The reason is that the file contains some \r charecters that came into picture while copying the file. This could be viewed by using od -c command. My question is that... (2 Replies)
Discussion started by: infyanurag
2 Replies

4. Shell Programming and Scripting

Trying to remove '^M' characters from a file.

Hi guys, Hope you are all well. This is a line of data from a csv file. I have used vi and set the 'set list' option to display the trailing $ character. "01","Grocery","01006","eat Fish & Spreads"$ I have tried the following commands, but neither of them appear to be working? 1) tr... (13 Replies)
Discussion started by: Krispy
13 Replies

5. Shell Programming and Scripting

Unix Script file to Append Characters before rows in file.

Hi Experts, I am working on HP-UX. I am new to shell scripting. I would like to have a shell script which will prefix: 1. "H|" before first row of my file and, 2. "T" for all other rows of the file. For Example - File before running the script 20100430|4123451810|218.50|TC 20100430 ... (4 Replies)
Discussion started by: phani333
4 Replies

6. Shell Programming and Scripting

File contains ^M characters

Hello, I tried with this command,it's working fine,file contains huge data it's not removing the control+M character dos2unix test1.txt test2.txt Please help me,is there any other option. :wall: Thanks, Murali ---------- Post updated at 06:41 AM ---------- Previous update... (6 Replies)
Discussion started by: muralikri
6 Replies

7. Shell Programming and Scripting

sed replacing specific characters and control characters by escaping

sed -e "s// /g" old.txt > new.txt While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
Discussion started by: ijustneeda
11 Replies

8. Shell Programming and Scripting

awk script to count characters in file 1 in file 2

I need a scripting AWK to compare 2 files. file 1 and 2 are list of keywords 1 is a b c d 2 is aa aaa b bb ccc d I want the AWK script to give us the number of times every keyword in file 1 occurs in file 2. output should be a 2 (7 Replies)
Discussion started by: anhtt
7 Replies

9. Linux

File conversion and removing special characters from a file in Linux

I have a .CSV file when I check for the special characters in the file using the command cat -vet filename.csv, i get very lengthy lines with "^@", "^I^@" and "^@^M" characters in between each alphabet in all of the records. Using the code below file filename.csv I get the output as I have a... (2 Replies)
Discussion started by: dhruuv369
2 Replies

10. Shell Programming and Scripting

Outputting characters after a given string and reporting the characters in the row below --sed

I have this fastq file: @M04961:22:000000000-B5VGJ:1:1101:9280:7106 1:N:0:86 GGGGGGGGGGGGCATGAAAACATACAAACCGTCTTTCCAGAAATTGTTCCAAGTATCGGCAACAGCTTTATCAATACCATGAAAAATATCAACCACACCA +test-1 GGGGGGGGGGGGGGGGGCCGGGGGFF,EDFFGEDFG,@DGGCGGEGGG7DCGGGF68CGFFFGGGG@CGDGFFDFEFEFF:30CGAFFDFEFF8CAF;;8... (10 Replies)
Discussion started by: Xterra
10 Replies
GSL-RANDIST(1)						      General Commands Manual						    GSL-RANDIST(1)

NAME
gsl-randist - generate random samples from various distributions SYNOPSYS
gsl-randist seed n DIST param1 param2 [..] DESCRIPTION
gsl-randist is a demonstration program for the GNU Scientific Library. It generates n random samples from the distribution DIST using the distribution parameters param1, param2, ... EXAMPLE
Here is an example. We generate 10000 random samples from a Cauchy distribution with a width of 30 and histogram them over the range -100 to 100, using 200 bins. gsl-randist 0 10000 cauchy 30 | gsl-histogram -100 100 200 > histogram.dat A plot of the resulting histogram will show the familiar shape of the Cauchy distribution with fluctuations caused by the finite sample size. awk '{print $1, $3 ; print $2, $3}' histogram.dat | graph -T X SEE ALSO
gsl(3), gsl-histogram(1). AUTHOR
gsl-randist was written by James Theiler and Brian Gough. Copyright 1996-2000; for copying conditions see the GNU General Public Licence. This manual page was added by the Dirk Eddelbuettel <edd@debian.org>, the Debian GNU/Linux maintainer for GSL. GNU
GSL-RANDIST(1)
All times are GMT -4. The time now is 04:40 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy