Hello there,
I have a script that must be written in bash that has to deal with reading in values from a file (in scientific notation), and requires executing some mathematical operations with them. What is the easiest way to go about doing this/converting it to float to use | bc, etc.?
... (7 Replies)
Hi Friends,
I have following 50,000 records in .txt file.
I need to round field 3, 4, & 5 to 3 decimal places.
11|A123|-2.64216408856E01|3.64216408856E01|4.64216408856E-01
11|A123|0|-5.64216408856E01|0
11|A123|0|0|0
11|A123|-99999999|-99999999|-99999999... (4 Replies)
Hi,
I just want to sort my file with exponential notation. For example:
1;2;4;s
1;5e-01;4;s
1;1;4;s
I used sort -gk2, but it does not sort in the correct way. What's wrong? (15 Replies)
wondering if anyone has any thoughts to convert the below thru a shell script
Convert decimal signalling point notation to ANSI point code notation
There is a site that does that conversion but i need to implement the solution in a shell script.....Thoughts....
OS: Solaris 9
... (4 Replies)
I am wondering why big O notation is not being emphasized in shell script context. But its almost discussed in all OOP languages,
Please shed your thoughts,
Thanks (7 Replies)
echo 0.633588 1875 | awk '{print $1 * $2 * 1024}'
is there a better way to run the above command? it keeps printing out in notation and i do not want that at all.
when i run the above, i get:
1.21649e+06
OS: linux
language:bash (1 Reply)
Hello,
I want to simplify two commands into one.
1st command
$type_log_$instance.log.$date.0012nd command
$type_log.log.$date.tar.gzInto blue brackets, How do I do to replace the pattern by a blank or _$instance ?
$type_log?_$instance].log.$date.*Thank you. (13 Replies)
Hello
I have two kinds of logs like
server.logserver.log.2013-07-27.001i want to create a variable which look like this (with a pipe)
log_name=server.(log|log.$YYYY-MM-DD.)But i tried many cases but it didn't work.
Is it possible ? If yes, can you help me. (6 Replies)
hello folks,
I have few values in a log which are in scientific notation.
I am trying to convert into actual decimal format or integer but couldn't able to convert.
Values in scientific notation:
1.1662986666666665E-4
2.0946799999999998E-4
3.0741333333333333E-6
5.599999999999999E-7... (2 Replies)
Discussion started by: scriptscript
2 Replies
LEARN ABOUT BSD
expr
EXPR(1) General Commands Manual EXPR(1)NAME
expr - evaluate arguments as an expression
SYNOPSIS
expr arg ...
DESCRIPTION
The arguments are taken as an expression. After evaluation, the result is written on the standard output. Each token of the expression is
a separate argument.
The operators and keywords are listed below. The list is in order of increasing precedence, with equal precedence operators grouped.
expr | expr
yields the first expr if it is neither null nor `0', otherwise yields the second expr.
expr & expr
yields the first expr if neither expr is null or `0', otherwise yields `0'.
expr relop expr
where relop is one of < <= = != >= >, yields `1' if the indicated comparison is true, `0' if false. The comparison is numeric if
both expr are integers, otherwise lexicographic.
expr + expr
expr - expr
addition or subtraction of the arguments.
expr * expr
expr / expr
expr % expr
multiplication, division, or remainder of the arguments.
expr : expr
The matching operator compares the string first argument with the regular expression second argument; regular expression syntax is
the same as that of ed(1). The (...) pattern symbols can be used to select a portion of the first argument. Otherwise, the
matching operator yields the number of characters matched (`0' on failure).
( expr )
parentheses for grouping.
Examples:
To add 1 to the Shell variable a:
a=`expr $a + 1`
To find the filename part (least significant part) of the pathname stored in variable a, which may or may not contain `/':
expr $a : '.*/(.*)' '|' $a
Note the quoted Shell metacharacters.
SEE ALSO sh(1), test(1)DIAGNOSTICS
Expr returns the following exit codes:
0 if the expression is neither null nor `0',
1 if the expression is null or `0',
2 for invalid expressions.
7th Edition April 29, 1985 EXPR(1)