May be a simple question but I just began to write unix scripts a week ago, for sorting some huge amount of experiment data, so I got no common sense about unix scripting and really need your helps...
The situation is, I want to read the nth word of mth line in a file, and then store it in a variable. Been searching through the internet and I got an AWK command like this
With this command line above I want to get the first word in line '$m', but it returns the whole line into the $var (words in the file are separated by tab)
In addition, I would need a command to get the '$n'th word in the '$m'th line, but I guess the command below would not work because the wrong formating of '$'
Thank you...
Greetings.
I am struggling with a shell script to make my life simpler, with a number of practical ways in which it could be used. I want to take a standard text file, and pull the 'n'th word from each line such as the first word from a text file.
I'm struggling to see how each line can be... (5 Replies)
Hi people;
i want to read the last word of the 14th line of my file1.txt. Here is the EXACT 14th line of the file.
250 SectorPortnum=3,AuxPortInUngo=2,PortDeviceGroup=1,PortDeviceSet=1,PorDevice=1 20 >>> Set.
i have to get the word Set. how can i call it and also how... (3 Replies)
For example i'm having the below contents in a file:
expr is great when you want to split a string into just two parts. The .* also makes expr good for skipping a variable number of words when you don't know how many words a string will have. But expr is lousy for getting, say, the fourth word... (2 Replies)
Hi,
For my reuirement, I have to read a file from the 2nd line till the last line<EOF>.
Say,
I have a file as test.txt, which as a header record in the first line followed by records in rest of the lines.
for i in `cat test.txt`
{
echo $i
}
While doing the above loop, I have read... (5 Replies)
Hi,
Is there any short method to print from a particular field till another filed using awk?
Example File:
File1
====
1|2|acv|vbc|......|100|342
2|3|afg|nhj|.......|100|346
Expected output:
File2
====
acv|vbc|.....|100
afg|nhj|.....|100 (8 Replies)
Hi i am new in scripting
how i can get 2 elements from first line of delimited txt file in shell scripts.
AA~101010~0~AB~8000~ABC0~
BB~101011~0~BC~8000~ABC~
CC~101012~0~CD~8000~ABC0~
DD~101013~0~AB~8000~ABC~
AA~101014~0~BC~8000~ABC0~
CC~101015~0~CD~8000~ABC~
can anyone plse help?... (3 Replies)
Hi,
i need to remove mth and nth column from a csv file. here m and n is not a specific number. it is a variable
ex.
m=2
n=5
now i need to remove the 2nd and 5th line.. Please help how to do that.
Thanks!!! (18 Replies)
Hi All,
Hope you guys had a wonderful weekend
I have a scenario where in which I have to read a file line by line
and check for few words before redirecting to a file
I have searched the forum but,either those answers dint work (perhaps because of my wrong under standing of how IFS... (6 Replies)
My file (the output of an experiment) starts off looking like this,
_____________________________________________________________
Subjects incorporated to date: 001
Data file started on machine PKSHS260-05CP
**********************************************************************
Subject 1,... (9 Replies)
Discussion started by: samonl
9 Replies
LEARN ABOUT OSF1
llconvert
llconvert(8) System Manager's Manual llconvert(8)NAME
llconvert - Modify lastlog records from DIGITAL UNIX releases 4.0x and prior to new format
SYNOPSIS
/usr/lbin/llconvert [-vnrp?h] input_file [output_file]
OPTIONS
Restore new format to old format. Verbose. Display lines while converting. Do not preserve contents of input file. Formatted print only.
Do not convert. (May be used with the -r option). Display usage message.
DESCRIPTION
The llconvert command reads records from the lastlog file, such as /var/adm/lastlog, and converts the record format to the updated struct
lastlog format. If no output file is specified or if the output file path is identical to the input file path, llconvert makes a backup
copy of the original input file using the following algorithm: If filename.orig exists. Where n is a unique number.
The llconvert command attempts to detect an input file that is in the wrong format (for example, input file is already a new format file).
A warning message is issued in this case, but conversion continues.
RETURN VALUES
Success. An error occurred.
EXAMPLES
To convert an old format accounting file to the new format: llconvert /var/adm/lastlog.prev
Upon completion of this command, /var/adm/lastlog.prev will have been converted to the new format. The original /var/adm/last-
log.prev is renamed to:
/var/adm/lastlog.prev.orig To convert a lastlog file in new format to the old format: llconvert -r /var/adm/lastlog /var/adm/last-
log.old
FILES
Lastlog header file that defines the format for the lastlog file. The active lastlog file.
SEE ALSO
Commands: finger(1)llconvert(8)