Sponsored Content
Top Forums Shell Programming and Scripting How to compare specific digit in number? Post 302916080 by wisecracker on Saturday 6th of September 2014 03:36:29 PM
Old 09-06-2014
Manually in OSX 10.7.5, default bash terminal:-
Code:
Last login: Sat Sep  6 20:31:06 on ttys000
AMIGA:barrywalker~> SOME_STRING="1234ksj  dflkjsdf 9398 7492834.9198  91283kfc"
AMIGA:barrywalker~> POSITION=3
AMIGA:barrywalker~> NUMBER_OF_CHARACTERS=1
AMIGA:barrywalker~> echo "${SOME_STRING:$POSITION:$NUMBER_OF_CHARACTERS}"
4
AMIGA:barrywalker~> _

This User Gave Thanks to wisecracker For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Extracting 10 digit number from txt files

Hi, Was wondering if you could give me an example of extracting a 10 digit number from 5 txt files using a regular expression (the number is always different ) and storing the numbers in variables Thanks C19 (9 Replies)
Discussion started by: c19h28O2
9 Replies

2. Shell Programming and Scripting

adding a 6 digit number retaining 0s on the left

i am new to shell scripting. i want to keep on increamenting a 6 digit number. For eg. 000000 + 1 = 000001 But instead of 000001 i get only 1. How do i do this ? Pls help. (8 Replies)
Discussion started by: kanchan_cp
8 Replies

3. Programming

generating 16 digit random number in C

Hi, How can we generate 16 digit random nos in C. (10 Replies)
Discussion started by: ajaysahoo
10 Replies

4. Programming

Find out 2^n+1 , where n is a 3 digit number

I have to write a c program which takes a 3 digit number n and calculates the value of (2^n)+1 and then determines the number is prime or not. I have tried to first calculate the value of 2^n and then adding one to it and then apply the logic of prime number. but the ultimate problem is that... (7 Replies)
Discussion started by: agrawal.prachi
7 Replies

5. UNIX for Dummies Questions & Answers

list all files containing 4 digit number using grep

how can i list all files in my home directory that have a 4 digit id number, the line number where the id is located and the id itself not printing the entire line? (5 Replies)
Discussion started by: hobiwhenuknowme
5 Replies

6. Shell Programming and Scripting

Print a number up to last significant digit after decimal point

I want to write/print a number through a shell script up to its last significant digit (LSD) after the decimal point. Say, x=10.00056000000000000 I want to print x as x=10.00056. Note that x can be any thing so I cannot know the position of the LSD always. Thanks. (16 Replies)
Discussion started by: hbar
16 Replies

7. Shell Programming and Scripting

Regular expression for 6 digit number present in a line

Hello Team, i have a file test1.txt, in which i have to grep only the 6 digit number from it, Could you pls help in this. $cat test1.txt <description>R_XYZ_1.6 r370956</description> $ grep "\{6\}" test1.txt <description>R_XYZ_1.6 r370956</description> i need output as 370956. ... (3 Replies)
Discussion started by: chandana hs
3 Replies

8. Shell Programming and Scripting

Add tab after digit in specific field in file

I am trying to add a tab after the last digit in $3 in the input. The grep below is all I can think off. Thank you :) sed -n 's/:/&/p' input input chr1 955542 955763AGRN-6|gc=75 chr1 957570 957852AGRN-7|gc=61.2 chr1 976034 976270AGRN-9|gc=74.5 desired output chr1... (5 Replies)
Discussion started by: cmccabe
5 Replies

9. Shell Programming and Scripting

awk to update specific value in file with match and add +1 to specific digit

I am trying to use awk to match the NM_ in file with $1 of id which is tab-delimited. The NM_ will always be in the line of file that starts with > and be after the second _. When there is a match between each NM_ and id, then the value of $2 in id is substituted or used to update the NM_. Each NM_... (3 Replies)
Discussion started by: cmccabe
3 Replies

10. UNIX for Beginners Questions & Answers

Process only 4 digit odd number starting with zero

I am trying to process only IonCode_odd #'s (always 4 digits starting with zero), but the below isn't working as expected. Is there a better way? Thank you :). IonCode_0401_xxxx_xxxx_xxxx.bam IonCode_0401_xxxx_xxxx_xxxx.bam.bai IonCode_0401_xxxx_xxxx_xxxx.fastq... (2 Replies)
Discussion started by: cmccabe
2 Replies
OPENVT(1)							     Linux 1.x								 OPENVT(1)

NAME
openvt - start a program on a new virtual terminal (VT). SYNOPSIS
openvt [-c vtnumber] [-s] [-u] [-l] [-v] [--] command command_options DESCRIPTION
openvt will find the first available VT, and run on it the given command with the given command options, standard input, output and error are directed to that terminal. The current search path ($PATH) is used to find the requested command. If no command is specified then the environment variable $SHELL is used. OPTIONS -c vtnumber Use the given VT number and not the first available. Note you must have write access to the supplied VT for this to work. -e Directly execute the given command, without forking. This option is meant for use in /etc/inittab. -s Switch to the new VT when starting the command. The VT of the new command will be made the new current VT. -u Figure out the owner of the current VT, and run login as that user. Suitable to be called by init. Shouldn't be used with -c or -l. -l Make the command a login shell. A - is prepended to the name of the command to be executed. -v Be a bit more verbose. -w wait for command to complete. If -w and -s are used together then openvt will switch back to the controlling terminal when the com- mand completes. -- end of options to openvt. NOTE
If openvt is compiled with a POSIX (GNU) getopt() and you wish to set options to the command to be run, then you must supply the end of options -- flag before the command. EXAMPLES
openvt can be used to start a shell on the next free VT, by using the command: openvt bash To start the shell as a login shell, use: openvt -l bash To get a long listing you must supply the -- separator: openvt -- ls -l HISTORY
Earlier, openvt was called open. It was written by Jon Tombs <jon@gtex02.us.es or jon@robots.ox.ac.uk>. The -w idea is from "sam". SEE ALSO
chvt(1), doshell(8), login(1) 19 Jul 1996 V1.4 OPENVT(1)
All times are GMT -4. The time now is 02:22 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy