1. Removed space before/after all "="
2. Replaced reserved word "su" with "suu" and "sum" with "summ"
3. Typo error in total ='expr.....Should be total=`expr
4. Typo error. Should be $total + $tot`
Last edited by edidataguy; 08-05-2009 at 01:26 AM..
I have a file which is 5 million records. And each records has 412 fields has delimited by "|". So that makes each records to be 2923 bytes long. I wanted to extract specific records like top 100 or 2500 - 5000, 50001 - 10000 etc. from this file.
I tried using head command for top 100 records,... (1 Reply)
I am trying to cut the first 10 characters from a file only if the file has 'xyz' in field 185-188.
I tried this
cat filename | cut -c1-10
but this gives me all the records regardless of what is in field 185-188.
Is this doable ?
Thanks in advance for responses. (2 Replies)
Hi,
I am looking for a method to get column13 to column 50 data from the 1st line of a multiline reord. The records are stored in a large file and are separated by newline. sample format is
(data in red is to be extracted)
<header>
A001dfhskhfkdsh hajfhksdhfjh... (3 Replies)
Hi everyone.
I am a newbie to Linux stuff. I have this kind of problem which couldn't solve alone. I have a text file with records separated by empty lines like this:
ID: 20
Name: X
Age: 19
ID: 21
Name: Z
ID: 22
Email: xxx@yahoo.com
Name: Y
Age: 19
I want to grep records that... (4 Replies)
<Update>
I have the solution:
sed 's/\{3\}/&;&;---;4/'
The thread can be marked as solved!
</Update>
Hi There,
I'm working on a script processing some data from a website into cvs format. There is only one final problem left I can't find a solution.
I've processed my file... (0 Replies)
Hi,
I look for a awk one liner for below issue.
input file
ABC 1234 abc 12345
ABC 4567 678 XYZ
xyz ght 678
ABC 787 yyuu
ABC 789 7890 777
zxr hyip hyu
mno uii 678 776
ABC ty7 888
All lines should be started with ABC as first field. If a record has another value for 1st... (7 Replies)
Dear all, today I'm scratching my head with a simple (I believe) issue.
Working with date is quite simple, so if I Need to add some seconds to current time, I'll use:
date --date='+30 seconds' +"%Y-%m-%d %H:%M:%S"But, how to pass the value to add from a variable? I tried the following without... (2 Replies)
I have a file data_1.out which contains:
1|abc mail|mail subject|mail body
2|def mail|mail subject|def mail body
I am trying to read the variables from data_1.out and use them to print to 2 different files based on the id (first_column)
The problem is I am not able to read the file... (8 Replies)
Hi All,
I have the below text file from which I have to cut particular section starting from PTR_Security_Rpeorting.cpf to PTR_Security_Reporting_Env93_export.
Report Model............: "D:\Cognos_Publishing\tmp.a2R94KLQec"\PTR_Security_Reporting.cpf
Report Output Script....:... (4 Replies)
Hi ,
I have a requirement to read a file ( 5 fields , ~ delimited) and find the records which contain anything other than Alphabets, Numbers , comma ,space and dot . ie a-z and A-Z and 0-9 and . and " " and , in 2nd field. Once I do that i would want the result to have field1|<flag>
flag can... (2 Replies)
Discussion started by: ashwin3086
2 Replies
LEARN ABOUT V7
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 ed(1), 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.
EXPR(1)