It principally reads: if tail +2 doesn't work for you (it does on my computer), try tail -n+2. Generally: check the man page for your tool & version to find out what it provides and what it misses.
Hi all,
I'm new to shell scripting.
I want to copy initial few lines(say first 10 lines) from a file to another file.
There is no "head" command in our embedded system.
sed & awk is there which I believe will do that, but I dont know how to.
This is linux 2.6 (embedded)
So please help me.... (5 Replies)
Hi,
I have a abc.txt file.
In this file there is a SQL query which Iwant to copy and print it on another file.The query (for eg) is written like this:
SELECT field1,
field2,
field3
from table1,table2
where <conditions>
END
I want to copy this query to another... (3 Replies)
Hi all,
I'm new to shell scripting.
I want to copy the first N lines from a file to another file.
Can someone please tell me how this can be done.
Thanks
Himi (2 Replies)
Hi All,
I have a file that gives me new line/output every 5 minutes. I need to create a script that capture new line/output besides "IN CRON_STATUS", in this case the new output is "begin ------ cron_status.sh - -----------".
I want this script to capture the line starting from "begin ------... (0 Replies)
Hello everyone. I have a log file that contains multiple domains:
www.thisdomain.com
agent.thisdomain.com
that.thisdomain.com
I need to copy all of the lines that contain "www.thisdomain.com" from the log and output them into a new file. I've tried everything with little luck. Please help... (3 Replies)
Dear All,
I am working with windoes OS but remote a linux machine. I wonder the way to copy an paste some part of a huge file in linux machine.
the contain of file like as follow:
...
dump annealling all custom 10 anneal_*.dat id type x y z q
timestep 0.02
run 200000
Memory... (2 Replies)
Hello,
I have a text file which I need to check for presence of certain tags, and then copy a subsequent portion of text into another file. The tag matching canbe done with Grep but I do not know how to copy selective lines from one file to another. Is it possible do that?
I checked up some... (8 Replies)
Hi Guys,
I have the following problem. I have original file (org.txt) that looks like this
module v_1(.....)
//arbitrary number of text lines
endmodule
module v_2(....)
//arbitrary number of text lines
endmodule
module v_3(...)
//arbitrary number of text lines
endmodule
module... (6 Replies)
Hi Guys,
I have an awk script that would search the input file for line that starts with a number 3 and copies into a new text file.
I want to extend this script to find the lines that either starts with 3 or a or b and copy all those lines into the new file.
Here is what I have so far:... (1 Reply)
Dear all,
I have stuck with this problem for some days.
I have a very big file, this file can not open by vi command.
There are 200 loops in this file, in each loop will have one line like this:
GWA quasiparticle energy with Z factor (eV)
And I need 98 lines next after this line.
Is... (6 Replies)
Discussion started by: phamnu
6 Replies
LEARN ABOUT OSX
tail
TAIL(1) BSD General Commands Manual TAIL(1)NAME
tail -- display the last part of a file
SYNOPSIS
tail [-F | -f | -r] [-q] [-b number | -c number | -n number] [file ...]
DESCRIPTION
The tail utility displays the contents of file or, by default, its standard input, to the standard output.
The display begins at a byte, line or 512-byte block location in the input. Numbers having a leading plus ('+') sign are relative to the
beginning of the input, for example, ``-c +2'' starts the display at the second byte of the input. Numbers having a leading minus ('-') sign
or no explicit sign are relative to the end of the input, for example, ``-n 2'' displays the last two lines of the input. The default start-
ing location is ``-n 10'', or the last 10 lines of the input.
The options are as follows:
-b number
The location is number 512-byte blocks.
-c number
The location is number bytes.
-f The -f option causes tail to not stop when end of file is reached, but rather to wait for additional data to be appended to the
input. The -f option is ignored if the standard input is a pipe, but not if it is a FIFO.
-F The -F option implies the -f option, but tail will also check to see if the file being followed has been renamed or rotated. The
file is closed and reopened when tail detects that the filename being read from has a new inode number. The -F option is ignored if
reading from standard input rather than a file.
-n number
The location is number lines.
-q Suppresses printing of headers when multiple files are being examined.
-r The -r option causes the input to be displayed in reverse order, by line. Additionally, this option changes the meaning of the -b,
-c and -n options. When the -r option is specified, these options specify the number of bytes, lines or 512-byte blocks to display,
instead of the bytes, lines or blocks from the beginning or end of the input from which to begin the display. The default for the -r
option is to display all of the input.
If more than a single file is specified, each file is preceded by a header consisting of the string ``==> XXX <=='' where XXX is the name of
the file unless -q flag is specified.
EXIT STATUS
The tail utility exits 0 on success, and >0 if an error occurs.
SEE ALSO cat(1), head(1), sed(1)STANDARDS
The tail utility is expected to be a superset of the IEEE Std 1003.2-1992 (``POSIX.2'') specification. In particular, the -F, -b and -r
options are extensions to that standard.
The historic command line syntax of tail is supported by this implementation. The only difference between this implementation and historic
versions of tail, once the command line syntax translation has been done, is that the -b, -c and -n options modify the -r option, i.e., ``-r
-c 4'' displays the last 4 characters of the last line of the input, while the historic tail (using the historic syntax ``-4cr'') would
ignore the -c option and display the last 4 lines of the input.
HISTORY
A tail command appeared in PWB UNIX.
BSD June 29, 2006 BSD