Hello!
Is it anyone who might know how to extract the n last lines from a file, typically the 1000 last? Until know I have used sed -n np filename, but it takes each line separately, and is hence very time consuming.
Thank you in advance! (3 Replies)
I have a file that varies in the # of records. I want to read 1000 records, do something, read the next 1000 records, do something, going in 1000 increment chunks, and then finish up with whatever is left over at end of file. (1 Reply)
I'm trying to clean up my samba share and need to print the found file or print the path of the image it tried to searched for. So far I have this but can't seem to get the logic right. Can anyone help point me in the right direction?
for FILE in `cat list`; do
if ;
then
... (1 Reply)
I have large file with around 100k+ lines. I wanted to retain only the last 100 lines in that file. One way i thought was using
tail -1000 filename > filename1
mv filename1 filename
But there should be a better solution.. Is there a way I can use sed or any such command to change the... (9 Replies)
Hi Guys,
Even though, i have called db2 sql file earlier, this is my first time to call a oracle sql file.
I need to make a database(oracle) connection and then call the sql file in a loop.
Can you please help me out.
Thanks for your help and time.
Regards,
Magesh (4 Replies)
Dear All,
The need to found more than 1000 file are available in particular directory or not .That more than 1000 file stored in file.txt . i tried with locate & find command .But i can't get.pls post if any other option (1 Reply)
Hi Greetings
i have 1000 files (xmlfiles) and i need to find which file contain the string over 1000 file
all file end with txt
i tried with
grep -c "string" *.txt
i am getting an error
-bash: /bin/egrep: Argument list too long
i have put an script like below
#!/bin/bash
for line... (9 Replies)
I have a file having n number of records .i want first 1000 records from the file and store in temporary file to process on sunday.
I want script should should automatically take the next 1000 records for processing on next sunday.
can we do it using head and tail
head -1000 | tail... (2 Replies)
Hi All,
I need to extract a position in the file and multiple the value by 1000 and the replace it .
Original
0010001200084701217637306521200000000000010010000000 ---> 000847 * 1000
0010012700086001213437404323000000000000001001000000 ---> 000860 * 1000... (2 Replies)
Discussion started by: arunkumar_mca
2 Replies
LEARN ABOUT LINUX
head
HEAD(1) User Commands HEAD(1)NAME
head - output the first part of files
SYNOPSIS
head [OPTION]... [FILE]...
DESCRIPTION
Print the first 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name. With
no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-c, --bytes=[-]K
print the first K bytes of each file; with the leading `-', print all but the last K bytes of each file
-n, --lines=[-]K
print the first K lines instead of the first 10; with the leading `-', print all but the last K lines of each file
-q, --quiet, --silent
never print headers giving file names
-v, --verbose
always print headers giving file names
--help display this help and exit
--version
output version information and exit
K may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P,
E, Z, Y.
AUTHOR
Written by David MacKenzie and Jim Meyering.
REPORTING BUGS
Report head bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report head translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for head is maintained as a Texinfo manual. If the info and head programs are properly installed at your site, the
command
info coreutils 'head invocation'
should give you access to the complete manual.
GNU coreutils 8.5 February 2011 HEAD(1)