09-27-2010
It eliminates matching lines by printing only lines which were not previously added to an array (x)
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1. Shell Programming and Scripting
Hi,
Could anyone please explain why we have arr=1 - what does this statement do?
awk -F\; 'FNR==NR{arr=1;next};$3 in arr' core.txt gmrd.txt
Any help appreciated (2 Replies)
Discussion started by: penfold
2 Replies
2. Shell Programming and Scripting
Could someone give me a quick simple explanation for the AWK command.
And also help me to explain the code i have made. I have made some general comments about it myself. I was wondering if people could help me with the rest:
awk -F'' 'END {
fmt = "%-20s\t%s\t%s\n" ... (0 Replies)
Discussion started by: amatuer_lee_3
0 Replies
3. Shell Programming and Scripting
Hello
I've got a script that takes 2 parameters. id and f.
id is a user id and f is a file.
I want to print this id on the first line and then the file.
how can this be done?
thanks (3 Replies)
Discussion started by: jacma
3 Replies
4. Shell Programming and Scripting
Hello,
How can I make an alias of an AWK one liner that prints specific lines from a file like below?
# from a command like this:
awk 'NR == 100, NR == 150' file.cfg
The alias I want to make should work like this(I guess):
<alias_command> <file.cfg><start_line><end_line>
So the... (1 Reply)
Discussion started by: majormark
1 Replies
5. Shell Programming and Scripting
Hi,
The below script is working fine
awk1.sh
=======
awk BEGIN { FS="|" } FNR==NR { f1=$2; next } $1 in f1 && $2 =="xx" && $1 == "DAILY_JOB" {print $3}
awk -f awk1.sh a.txt b.txt--Its working fine .
When passing parameters its not working .Any help it should be appereciated.
... (4 Replies)
Discussion started by: akil
4 Replies
6. Shell Programming and Scripting
hi all
can any one help me to understand this
bdf -t vfxs | awk '/\//{printf("%-30s%-10s%-10s%-10s%-5s%-10s\n",$1,$2,$3,$4,$5,$6)}'
i want to understand the numbers %-30S% (4 Replies)
Discussion started by: maxim42
4 Replies
7. Shell Programming and Scripting
Hello,
I have recently come across this awk program. Can some one shed some light on what is taking place.
awk '{!a++}END{for(i in a) if ( a >10 ) print a,i }' $FILE
Best Regards,
jaysunn (1 Reply)
Discussion started by: jaysunn
1 Replies
8. Shell Programming and Scripting
Hi, i'm just after a simple explanation of how the following awk oneliner works.
gawk -F"," '{for(i=m;i<=n;i++)printf "%s" OFS,$i; print x}' m=1 n=70 OFS=, input.csv > output.csv
In particular i'm trying to understand how the two print statements work? How is the "x" variable being assigned... (3 Replies)
Discussion started by: theflamingmoe
3 Replies
9. Shell Programming and Scripting
To merge mutiple *.tab files as:
file1.tab
rs1 A A
rs2 A A
rs3 C C
rs4 C Cfile2.ind
rs1 T T
rs2 T T
rs3 G G
rs4 G Gand file3.tab
rs1 B B
rs2 B B
rs3 L L
rs4 L LOutput:
file1.tab file2.tab file3.tab
AA TT BB
AA TT BB
CC GG LL
CC GG ... (4 Replies)
Discussion started by: yifangt
4 Replies
10. Web Development
hi
what is the meaning of the below code, please explain in details
RewriteRule '^/(.*)$1$2/?' (1 Reply)
Discussion started by: raghur77
1 Replies
LEARN ABOUT OPENDARWIN
comm
COMM(1) BSD General Commands Manual COMM(1)
NAME
comm -- select or reject lines common to two files
SYNOPSIS
comm [-123i] file1 file2
DESCRIPTION
The comm utility reads file1 and file2, which should be sorted lexically, and produces three text columns as output: lines only in file1;
lines only in file2; and lines in both files.
The filename ``-'' means the standard input.
The following options are available:
-1 Suppress printing of column 1.
-2 Suppress printing of column 2.
-3 Suppress printing of column 3.
-i Case insensitive comparison of lines.
Each column will have a number of tab characters prepended to it equal to the number of lower numbered columns that are being printed. For
example, if column number two is being suppressed, lines printed in column number one will not have any tabs preceding them, and lines
printed in column number three will have one.
The comm utility assumes that the files are lexically sorted; all characters participate in line comparisons.
DIAGNOSTICS
The comm utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
cmp(1), diff(1), sort(1), uniq(1)
STANDARDS
The comm utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').
HISTORY
A comm command appeared in Version 4 AT&T UNIX.
BSD
June 6, 1993 BSD