I have to extract data from a text file which is huge in size >>10GB.
ie between two strings. If I do an ordinary sed it takes forever to come out. I was wondering if there was anyway to do the entire process in reverse and on finding the relevant string is there any way to break out of the... (5 Replies)
Hi,
I have a requirement to search for two words and grep all the lines between them. For e.g. :
$cat file.dat
abc,To,number
acd,To,cnz \* flexibile select *\
bcd,To,lla
anz,From,kln
app,From,lpz
I need to get all the lines between the lines cantaining word 'acd' and 'anz'.
the... (2 Replies)
Hi Everyone,
I have one a.txt:
a b 001 c
b b 002 c
c c, not 002 c
The output should be
001
002
002
If i use cut -f 3 -d' ', this does not work on the 3rd line, so i thought is any way to cut the field counting from the end? or any perl thing can do this?:confused:
... (3 Replies)
Hi, Guys. Please help me to find solution to this problem using shell scripting.
I have an INPUT file with 4 columns separated by tab. Each block of records is separated by -----
-----
Sample1 5402 6680 Pattern01
Sample2 2216 2368 Pattern02... (6 Replies)
Hi,
I've a situation where,
a=xxx.yyy.zzz.txt
EXTN=`echo $a | cut -d . -f2`
Using the above code it delimites and will return "yyy.zzz.txt" to EXTN. But i need to get only the extension "txt". so as per the above code it delimits in the first "." itself. Can anyone help how to do... (6 Replies)
I may be making this too hard on myself, but I'm trying to find a way that I can use a cut or awk string to always remove the last two delimited fields of a string.
Say I have
PackageName-U939393-8.2.3.4.s390x.rpm
But the s390x could be any string w/o periods in it, x8664 for example,... (9 Replies)
Hi am using unix aix
I have tried using awk but am getting only output = x ,its not incrementing next output
set -A var1 vv qa za
ct=0
i=3
while
do
var1=`echo ${var1}`
count=`awk ' NR==$i++ {print;exit}' ${.txt} | cut -c5 `
echo $count
let ct=ct+1
done (6 Replies)
I'm trying to reverse every even line in my file using the awk command below but it prints only the odd lines but nothing else:
$ awk '(NR % 2) {print}; !(NR % 2) {print | "rev";}' myfile
Any idea what I might have done wrong?
Thank you. (10 Replies)
Hi,
how to cut part of a string sing delimiter in reverse
input file
1,2,st-pa-tr-01,2,3,4,
2,3,ff-ht-05,6,7,8
how can i obtain strings till
st-pa-tr
ff-ht i.e cutting the last part og string -01 and -05
Thanks & Regards
Nivi
edit by bakunin: changed thread title (typo) (3 Replies)
Discussion started by: nivI
3 Replies
LEARN ABOUT OPENDARWIN
cut
CUT(1) BSD General Commands Manual CUT(1)NAME
cut -- select portions of each line of a file
SYNOPSIS
cut -b list [-n] [file ...]
cut -c list [file ...]
cut -f list [-d delim] [-s] [file ...]
DESCRIPTION
The cut utility selects portions of each line (as specified by list) from each file and writes them to the standard output. If no file argu-
ments are specified, or a file argument is a single dash ('-'), cut reads from from the standard input. The items specified by list can be
in terms of column position or in terms of fields delimited by a special character. Column numbering starts from 1.
The list option argument is a comma or whitespace separated set of increasing numbers and/or number ranges. Number ranges consist of a num-
ber, a dash ('-'), and a second number and select the fields or columns from the first number to the second, inclusive. Numbers or number
ranges may be preceded by a dash, which selects all fields or columns from 1 to the first number. Numbers or number ranges may be followed
by a dash, which selects all fields or columns from the last number to the end of the line. Numbers and number ranges may be repeated, over-
lapping, and in any order. It is not an error to select fields or columns not present in the input line.
The options are as follows:
-b list
The list specifies byte positions.
-c list
The list specifies character positions.
-d delim
Use the first character of delim as the field delimiter character instead of the tab character.
-f list
The list specifies fields, delimited in the input by a single tab character. Output fields are separated by a single tab character.
-n Do not split multi-byte characters.
-s Suppress lines with no field delimiter characters. Unless specified, lines with no delimiters are passed through unmodified.
ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of cut if the -n option is specified. Their effect is described in
environ(7).
EXAMPLES
Extract users' login names and shells from the system passwd(5) file as ``name:shell'' pairs:
cut -d : -f 1,7 /etc/passwd
Show the names and login times of the currently logged in users:
who | cut -c 1-16,26-38
DIAGNOSTICS
The cut utility exits 0 on success, and >0 if an error occurs.
SEE ALSO paste(1)STANDARDS
The cut utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').
HISTORY
A cut command appeared in AT&T System III UNIX.
BUGS
The -c option is a synonym for the -b option, which causes incorrect behaviour in locales that support multibyte characters.
When operating on fields (-f option is specified), cut does not recognise multibyte characters, and the delim character is recognised in the
middle of multibyte sequences.
BSD June 6, 1993 BSD