Sponsored Content
Top Forums Shell Programming and Scripting How reverse cut or read rows of lines Post 302127620 by ghostdog74 on Wednesday 18th of July 2007 11:04:22 PM
Old 07-19-2007
Quote:
Originally Posted by doer
echo $DATA | awk -F_ '{print $(NF-1)}'
try this:
Code:
echo $DATA | awk -F[_-] '{print $(NF-1)}'

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Need to read a file in reverse

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)
Discussion started by: scorreg
5 Replies

2. HP-UX

Cut rows

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)
Discussion started by: obedkhan
2 Replies

3. Shell Programming and Scripting

read line in reverse order from file

dear all i want to read 5th no of line from last line of file. kindly suggest me possible ways. rgds jaydeep (2 Replies)
Discussion started by: jaydeep_sadaria
2 Replies

4. Shell Programming and Scripting

cut a field, but with reverse order

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)
Discussion started by: jimmy_y
3 Replies

5. Shell Programming and Scripting

Print rows in reverse order if values decrease along the column

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)
Discussion started by: sam_2921
6 Replies

6. Shell Programming and Scripting

CUT command delimiter in reverse

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)
Discussion started by: skcvasanth
6 Replies

7. Shell Programming and Scripting

Cut or awk in reverse

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)
Discussion started by: cbo0485
9 Replies

8. Shell Programming and Scripting

How to cut the particular string and increment the rows?

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)
Discussion started by: Venkatesh1
6 Replies

9. Shell Programming and Scripting

Reverse even lines

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)
Discussion started by: ivpz
10 Replies

10. UNIX for Dummies Questions & Answers

How to cut part of a string in reverse?

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
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
All times are GMT -4. The time now is 01:57 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy