05-13-2014
A simple approach is to count the number of lines with wc, then use tail and head.
Regards,
Alister
---------- Post updated at 01:43 PM ---------- Previous update was at 01:40 PM ----------
More efficiently, dispense with wc and simply use tail and sed (using $ to avoid reprinting the final line).
Regards,
Alister
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi ,
I have found a interesting thing about tail command:
when I tried to use 'tail -1 *' to look at every file with the current derectory, I only got one line of result of one file.
But if I use 'head -1 *', I would get multiple lines.
Is there a way to do get multiple lines with 'tail -1 *'... (3 Replies)
Discussion started by: whatisthis
3 Replies
2. Shell Programming and Scripting
I was wondering how can I do this
I have file myfile.txt
wc -l is: 5 000 000
I have to remove first 1 000 000 lines from header..
I tryed with tail -4000000 myfile.txt>newfile.txt
but it does not work...
any help?? (2 Replies)
Discussion started by: amon
2 Replies
3. Shell Programming and Scripting
hi
Can anyone explain me how these two commands awk and grep works in a ksh shell
Thanks
Babu (1 Reply)
Discussion started by: ksmbabu
1 Replies
4. HP-UX
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Discussion started by: alert0919
3 Replies
5. Shell Programming and Scripting
Hi All,
My query seems to be silly but Iam unable to find where the exact problem lies.
I have a script to unzip set of files
here is the script
#!/bin/ksh
Count=`cat /home/gaddamja/Tempfile | wc -l`
while
do
Filename=`cat /home/gaddamja/Tempfile |tail -$Count | head -1`
cd... (7 Replies)
Discussion started by: jagadish_gaddam
7 Replies
6. UNIX for Dummies Questions & Answers
Hi all,
Can you please tell me the command, with which one can know the amount of space a specific directory has used.
df -k . ---> Displays, the amount of space allocated, and used for a directory.
du -k <dir name> - gives me the memory used of all the files inside <dir>
But i... (2 Replies)
Discussion started by: abhisheksunkari
2 Replies
7. Shell Programming and Scripting
i have two files as shown below
t1.txt:
argument1
argu2
argu37
t2.txt:
22
33
44
i want o/p as
argument1 22
argu2 33
argu37 44
i am trying to merge two file under perl script using following
system("paste t1.txt t2.txt | awk... (3 Replies)
Discussion started by: roopa
3 Replies
8. Shell Programming and Scripting
Hi does anyone know how to create a file using the tail command? My book has this file I need to create and it says to use the tail command and that it is possible but I have no idea. Thanks. (4 Replies)
Discussion started by: drew211
4 Replies
9. Shell Programming and Scripting
Hi Experts,
I have a Text file generated as below;
<NAME>
NEW#<technicalName><TAB> <Version>
OLD#<technicalName><TAB> <Version>
e.g.
CH_PPV_AUDIT_DISTRIBUTOR
NEW#EL_CFG_FTP_DISTRIBUTOR 2.1.0.upc2
OLD#EL_CFG_FTP_DISTRIBUTOR 2.1.0.upc1... (19 Replies)
Discussion started by: rajangupta2387
19 Replies
10. UNIX for Beginners Questions & Answers
Hi Team,
Can anyone help me here:
I have to access server logs via putty and these logs file is a trailing file (continously updating) with ERROR and WARNINGS... I need to know if I can pull this trailing file to a local drive so that I can do some higlighting on some keywords through Notepad... (13 Replies)
Discussion started by: jitensetia
13 Replies
SPLIT(1) FSF SPLIT(1)
NAME
split - split a file into pieces
SYNOPSIS
split [OPTION] [INPUT [PREFIX]]
DESCRIPTION
Output fixed-size pieces of INPUT to PREFIXaa, PREFIXab, ...; default PREFIX is `x'. With no INPUT, or when INPUT is -, read standard
input.
Mandatory arguments to long options are mandatory for short options too.
-a, --suffix-length=N
use suffixes of length N (default 2)
-b, --bytes=SIZE
put SIZE bytes per output file
-C, --line-bytes=SIZE
put at most SIZE bytes of lines per output file
-l, --lines=NUMBER
put NUMBER lines per output file
--verbose
print a diagnostic to standard error just before each output file is opened
--help display this help and exit
--version
output version information and exit
SIZE may have a multiplier suffix: b for 512, k for 1K, m for 1 Meg.
AUTHOR
Written by Torbjorn Granlund and Richard M. Stallman.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
SEE ALSO
The full documentation for split is maintained as a Texinfo manual. If the info and split programs are properly installed at your site,
the command
info split
should give you access to the complete manual.
split (coreutils) 4.5.3 February 2003 SPLIT(1)