Sponsored Content
Top Forums Shell Programming and Scripting change precision of bash variable Post 302529894 by ctsgnb on Saturday 11th of June 2011 03:56:07 AM
Old 06-11-2011
that with the code provided, depending on the distance value, you may get a result of more than 4 character.

Code:
[ctsgnb@shell ~/sand]$ printf '%.2f\n' 1234.334561754018
1234.33
[ctsgnb@shell ~/sand]$ printf '%.4s\n' 1234.334561754018
1234
[ctsgnb@shell ~/sand]$ printf '%.4s\n' 0.334561754018
0.33
[ctsgnb@shell ~/sand]$ printf '%.4s\n' .33456175
.334
[ctsgnb@shell ~/sand]$ printf '%.2f\n' .33456175
0.33

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

precision getting?

I need to find out the precision on a solaris machine using the unix terminal. How do I find this out? Specifics needed: How are single precision numbers represented (8 or 16 bit) How are double precision numbers represented (16 or 32 bit) How are they stored. ( some computers store numbers... (1 Reply)
Discussion started by: Townsfolk
1 Replies

2. Programming

max precision in float

Hi, As all of us know that size of int is machine as well as compiler dependent we can get the range and size of an int , float and char etc in /usr/include/limits.h header file of a compiler but could any one tell me how to get info of precision of float and ... (6 Replies)
Discussion started by: useless79
6 Replies

3. Shell Programming and Scripting

passing variable from bash to perl from bash script

Hi All, I need to pass a variable to perl script from bash script, where in perl i am using if condition. Here is the cmd what i am using in perl FROM_DATE="06/05/2008" TO_DATE="07/05/2008" "perl -ne ' print if ( $_ >="$FROM_DATE" && $_ <= "$TO_DATE" ) ' filename" filename has... (10 Replies)
Discussion started by: arsidh
10 Replies

4. Shell Programming and Scripting

bash and ksh: variable lost in loop in bash?

Hi, I use AIX (ksh) and Linux (bash) servers. I'm trying to do scripts to will run in both ksh and bash, and most of the time it works. But this time I don't get it in bash (I'm more familar in ksh). The goal of my script if to read a "config file" (like "ini" file), and make various report.... (2 Replies)
Discussion started by: estienne
2 Replies

5. UNIX for Dummies Questions & Answers

Bash encoding, how to change

Hey guys. The problem is : i need to change encoding (to be more precise UTF-8) or change the language . You see , when i log in , manuals are shown in 'Some symbols' (being written in 'Not English') and its very confusing to work. Please Help :) (3 Replies)
Discussion started by: IdleProc
3 Replies

6. Shell Programming and Scripting

How can i change my bash prompt ?

It looks like, user@hostname:/auto/home3/user$ Desired, user@hostname$ I added following line in .bashrc, but still its same. export PS1=" $ " Please help me :confused: (13 Replies)
Discussion started by: admax
13 Replies

7. Shell Programming and Scripting

Change Variable Value from Multiple Scripts and Use these Variable

Hi to All, Please find below details. file_config.config export file1_status="SUCCESS" export file2_status="SUCCESS" file_one.sh I am calling another two shell script from these script. I need to pass individual two script status (If it's "FAILED") to file_main.sh. file_main.sh I... (2 Replies)
Discussion started by: div_Neev
2 Replies

8. Shell Programming and Scripting

Get timestamp with millisecond precision

Hi All, could any body let me know. how to get timestamp with millisecond precision in unix bash shell. example -->2005-12-06- 4-22-35-195 please help me. Thanks, Krupa:wall: (3 Replies)
Discussion started by: krupasindhu18
3 Replies

9. Shell Programming and Scripting

How to change Linux Terminal environment variable in a perl or bash script?

Hi, I meet an problem that it cannot change Terminal environment variable in a perl or bash script. This change can only exist and become effective in script lifetime. But I want to make this change take effect in current opened Terminal. In our view, the thought seems to be impossible, As... (9 Replies)
Discussion started by: weichanghe2000
9 Replies

10. Shell Programming and Scripting

Precision in print

I have a shell script which prints a variable to a text file (sorry if this is the wrong terminology, I'm new to this): awk `{sumdiffsqt+=$1;stdevt=sqrt(sumdiffsqt/('${n}'-1));errt=stdevt/sqrt('${n}')} END {print '$period',stdevt,errt}' diffsqt.txt >> ${xstation1}_${xstation2}_tt.err I need... (4 Replies)
Discussion started by: claire.a
4 Replies
PRINTF(1)                                                          User Commands                                                         PRINTF(1)

NAME
printf - format and print data SYNOPSIS
printf FORMAT [ARGUMENT]... printf OPTION DESCRIPTION
Print ARGUMENT(s) according to FORMAT, or execute according to OPTION: --help display this help and exit --version output version information and exit FORMAT controls the output as in C printf. Interpreted sequences are: " double quote \ backslash a alert (BEL)  backspace c produce no further output e escape f form feed new line carriage return horizontal tab v vertical tab NNN byte with octal value NNN (1 to 3 digits) xHH byte with hexadecimal value HH (1 to 2 digits) uHHHH Unicode (ISO/IEC 10646) character with hex value HHHH (4 digits) UHHHHHHHH Unicode character with hex value HHHHHHHH (8 digits) %% a single % %b ARGUMENT as a string with '' escapes interpreted, except that octal escapes are of the form or NNN %q ARGUMENT is printed in a format that can be reused as shell input, escaping non-printable characters with the proposed POSIX $'' syntax. and all C format specifications ending with one of diouxXfeEgGcs, with ARGUMENTs converted to proper type first. Variable widths are han- dled. NOTE: your shell may have its own version of printf, which usually supersedes the version described here. Please refer to your shell's documentation for details about the options it supports. AUTHOR
Written by David MacKenzie. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report printf translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
printf(3) Full documentation at: <http://www.gnu.org/software/coreutils/printf> or available locally via: info '(coreutils) printf invocation' GNU coreutils 8.28 January 2018 PRINTF(1)
All times are GMT -4. The time now is 07:37 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy