10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
I have code as below
# create temporary table `temp4277`(key(waybill_no))
select waybill_no,concat_ws('',card_type,card_series_no) cardinfo
from rfid_temp_ticket where waybill_no='4277'
group by... (4 Replies)
Discussion started by: kaushik02018
4 Replies
2. UNIX for Beginners Questions & Answers
I Want to merge multiple lines based on the 1st field and keep into single record.
SRC File:
AAA_POC_DB.TAB1
AAA_POC_DB.TAB2
AAA_POC_DB.TAB3
AAA_POC_DB.TAB4
BBB_POC_DB.TAB1
BBB_POC_DB.TAB2
CCC_POC_DB.TAB6
OUTPUT
-----------------
'AAA_POC_DB','TAB1','TAB2','TAB3','TAB4'... (10 Replies)
Discussion started by: raju2016
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3. Shell Programming and Scripting
Hi all,
I have a requirement to covert multiple lines in a comma delimited file to a single line through shell scripting. We should compare the data in the first column in each line. If it is same, then the other data should be put in the same line.Below is the sample input and expected output:... (4 Replies)
Discussion started by: Bobby_2000
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4. Shell Programming and Scripting
Hi All,
I have a spool file which as shown below. I want to make it as single line after every semicolon. In this case there should be 2 lines in vi editor.
I am not used to use sed so could you guys please help me out ?
exec spk_dba.sp_runsql('ALP','CREATE DATABASE LINK "TEST" CONNECT TO... (2 Replies)
Discussion started by: nicolas38
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5. Shell Programming and Scripting
Hi,
Input
7488 7389 chr1.fa chr1.fa
3546 9887 chr5.fa chr9.fa
7387 7898 chrX.fa chr3.fa
7488 7389 chr21.fa chr3.fa
7488 7389 chr1.fa chr1.fa
3546 9887 chr9.fa chr5.fa
7898 7387 chrX.fa chr3.fa
Desired Output
7488 7389 chr1.fa chr1.fa 2
3546 9887 chr5.fa chr9.fa 2... (2 Replies)
Discussion started by: jacobs.smith
2 Replies
6. Shell Programming and Scripting
Hi,
I have a requirement with,
No~Dt~Notes
1~2011/08/1~"aaa
bbb
ccc
ddd
eee
fff
ggg
hhh"
Single column alone got splitted into multiple lines.
I require the output as
No~Dt~Notes
1~2011/08/1~"aaa<>bbb<>ccc<>ddd<>eee<>fff<>ggg<>hhh"
mean to say those new lines to be... (1 Reply)
Discussion started by: Bhuvaneswari
1 Replies
7. Shell Programming and Scripting
This is related to one of my previous post but now with a slight difference: I need the "Updated:" to be in one line as well as the "Information:" on one line as well. These are in multiple lines right now as seen below. These can have 2 or more lines that needs to be in one line.
System name:... (8 Replies)
Discussion started by: The One
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8. Shell Programming and Scripting
Hi,
I've some files with the following data and i need to convert the lines between the separator ---, into a single line. I've tried with the paste cmd but my main problem is that the number of lines between the separator is not fix, it can very between 1-4 lines.
Input
---
2010-02-22... (4 Replies)
Discussion started by: RickyC9999
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9. Shell Programming and Scripting
I have a H U G E file with over 1million entries in it.
Looks something like this:
USER0001|DEVICE001|VAR1
USER0001|DEVICE001|VAR2
USER0001|DEVICE001|VAR3
USER0001|DEVICE001|VAR4
USER0001|DEVICE001|VAR5
USER0001|DEVICE001|VAR6
USER0001|DEVICE002|VAR1
USER0001|DEVICE002|VAR2... (4 Replies)
Discussion started by: SoMoney
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10. Shell Programming and Scripting
Can any one give me the idea on replacing multiple blank lines with a single blank line?
Please conside it for a file having more than 100 number of characters.
Regards,
Siba (3 Replies)
Discussion started by: siba.s.nayak
3 Replies
AWK(1) General Commands Manual AWK(1)
NAME
awk - pattern scanning and processing language
SYNOPSIS
awk [ -Fc ] [ prog ] [ file ] ...
DESCRIPTION
Awk scans each input file for lines that match any of a set of patterns specified in prog. With each pattern in prog there can be an asso-
ciated action that will be performed when a line of a file matches the pattern. The set of patterns may appear literally as prog, or in a
file specified as -f file.
Files are read in order; if there are no files, the standard input is read. The file name `-' means the standard input. Each line is
matched against the pattern portion of every pattern-action statement; the associated action is performed for each matched pattern.
An input line is made up of fields separated by white space. (This default can be changed by using FS, vide infra.) The fields are
denoted $1, $2, ... ; $0 refers to the entire line.
A pattern-action statement has the form
pattern { action }
A missing { action } means print the line; a missing pattern always matches.
An action is a sequence of statements. A statement can be one of the following:
if ( conditional ) statement [ else statement ]
while ( conditional ) statement
for ( expression ; conditional ; expression ) statement
break
continue
{ [ statement ] ... }
variable = expression
print [ expression-list ] [ >expression ]
printf format [ , expression-list ] [ >expression ]
next # skip remaining patterns on this input line
exit # skip the rest of the input
Statements are terminated by semicolons, newlines or right braces. An empty expression-list stands for the whole line. Expressions take
on string or numeric values as appropriate, and are built using the operators +, -, *, /, %, and concatenation (indicated by a blank).
The C operators ++, --, +=, -=, *=, /=, and %= are also available in expressions. Variables may be scalars, array elements (denoted x[i])
or fields. Variables are initialized to the null string. Array subscripts may be any string, not necessarily numeric; this allows for a
form of associative memory. String constants are quoted "...".
The print statement prints its arguments on the standard output (or on a file if >file is present), separated by the current output field
separator, and terminated by the output record separator. The printf statement formats its expression list according to the format (see
printf(3)).
The built-in function length returns the length of its argument taken as a string, or of the whole line if no argument. There are also
built-in functions exp, log, sqrt, and int. The last truncates its argument to an integer. substr(s, m, n) returns the n-character sub-
string of s that begins at position m. The function sprintf(fmt, expr, expr, ...) formats the expressions according to the printf(3) for-
mat given by fmt and returns the resulting string.
Patterns are arbitrary Boolean combinations (!, ||, &&, and parentheses) of regular expressions and relational expressions. Regular
expressions must be surrounded by slashes and are as in egrep. Isolated regular expressions in a pattern apply to the entire line. Regu-
lar expressions may also occur in relational expressions.
A pattern may consist of two patterns separated by a comma; in this case, the action is performed for all lines between an occurrence of
the first pattern and the next occurrence of the second.
A relational expression is one of the following:
expression matchop regular-expression
expression relop expression
where a relop is any of the six relational operators in C, and a matchop is either ~ (for contains) or !~ (for does not contain). A condi-
tional is an arithmetic expression, a relational expression, or a Boolean combination of these.
The special patterns BEGIN and END may be used to capture control before the first input line is read and after the last. BEGIN must be
the first pattern, END the last.
A single character c may be used to separate the fields by starting the program with
BEGIN { FS = "c" }
or by using the -Fc option.
Other variable names with special meanings include NF, the number of fields in the current record; NR, the ordinal number of the current
record; FILENAME, the name of the current input file; OFS, the output field separator (default blank); ORS, the output record separator
(default newline); and OFMT, the output format for numbers (default "%.6g").
EXAMPLES
Print lines longer than 72 characters:
length > 72
Print first two fields in opposite order:
{ print $2, $1 }
Add up first column, print sum and average:
{ s += $1 }
END { print "sum is", s, " average is", s/NR }
Print fields in reverse order:
{ for (i = NF; i > 0; --i) print $i }
Print all lines between start/stop pairs:
/start/, /stop/
Print all lines whose first field is different from previous one:
$1 != prev { print; prev = $1 }
SEE ALSO
lex(1), sed(1)
A. V. Aho, B. W. Kernighan, P. J. Weinberger, Awk - a pattern scanning and processing language
BUGS
There are no explicit conversions between numbers and strings. To force an expression to be treated as a number add 0 to it; to force it
to be treated as a string concatenate "" to it.
AWK(1)