Tail with positive offset


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Tail with positive offset
# 1  
Old 01-29-2012
Tail with positive offset

I have read the below from the book bash cookbook.
Code:
Tail +1 filenames

is similar to
Code:
cat filename

I have tried the same in Ubuntu 11.10 with bash. 4.0 .
I have received error for the Same.
May I know in which system that will work fine ?
Thanks
# 2  
Old 01-29-2012
It works fine on older systems. Run info coreutils 'tail invocation' on your system:

Code:
   For compatibility `tail' also supports an obsolete usage `tail
-[COUNT][bcl][f] [FILE]', which is recognized only if it does not
conflict with the usage described above.  This obsolete form uses
exactly one option and at most one file.  In the option, COUNT is an
optional decimal number optionally followed by a size letter (`b', `c',
`l') to mean count by 512-byte blocks, bytes, or lines, optionally
followed by `f' which has the same meaning as `-f'.

   On older systems, the leading `-' can be replaced by `+' in the
obsolete option syntax with the same meaning as in counts, and obsolete
usage overrides normal usage when the two conflict.  This obsolete
behavior can be enabled or disabled with the `_POSIX2_VERSION'
environment variable (*note Standards conformance::).

So you can enable the obsolete behavior with _POSIX2_VERSION:

Code:
% lsb_release -d
Description:    Ubuntu 11.10
% _POSIX2_VERSION=199209 tail +1 /etc/issue
Ubuntu 11.10 \n \l

%

Or just the modern syntax (you just need to add -n):
Code:
% tail -n +1 /etc/issue
Ubuntu 11.10 \n \l

%

This User Gave Thanks to radoulov For This Post:
 
Login or Register to Ask a Question

Previous Thread | Next Thread

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

File name offset

Dear all, I want to offset the file numbers. can you please make some awk code or linux code for the same. Example: input file names ANI_WFMASS_PIST00001.gif ANI_WFMASS_PIST00002.gif . . . ANI_WFMASS_PIST0000n.gif offset --> 30 ANI_WFMASS_PIST00031.gif ANI_WFMASS_PIST00032.gif... (14 Replies)
Discussion started by: kri321shna
14 Replies

2. UNIX for Advanced & Expert Users

Grep --byte-offset not returning the offset (Grep version 2.5.1)

Hi, I am trying to get the position of a repeated string in a line using grep -b -o "pattern" In my server I am using GNU grep version 2.14 and the code is working fine. However when I am deploying the same code in a different server which is using GNU grep version 2.5.1 the code is not... (3 Replies)
Discussion started by: Subhamoy
3 Replies

3. Shell Programming and Scripting

Joining multiple files tail on tail

I have 250 files that have 16 columns each - all numbered as follows stat.1000, stat.1001, stat.1002, stat.1003....stat.1250. I would like to join all 250 of them together tail by tail as follows. For example stat.1000 a b c d e f stat.1001 g h i j k l So that my output... (2 Replies)
Discussion started by: kayak
2 Replies

4. Solaris

NTP client offset

How to add offset to NTP client so that, for eg., clock is -20 seconds? (2 Replies)
Discussion started by: orange47
2 Replies

5. Solaris

how to calculate offset value to mb value in vxvm

root@erpqas# vxdg -g sap_dg free DISK DEVICE TAG OFFSET LENGTH FLAGS sapdisk3 c1t10d0s2 c1t10d0 15707513 2869 - sapdisk3 c1t10d0s2 c1t10d0 71080956 43335 - sapdisk5 c1t12d0s2 c1t12d0 70321149 803142 - ... (1 Reply)
Discussion started by: tv.praveenkumar
1 Replies

6. Programming

Negative Offset

Function: int fcntl(int fd, int cmd, struct flock * lock) Data Type: struct flock This structure is used with the fcntl function to describe a file lock. It has these members: off_t l_start This specifies the offset of the start of the region to which the lock applies, and... (1 Reply)
Discussion started by: DNAx86
1 Replies

7. UNIX for Dummies Questions & Answers

Reading a file from a specified offset

Hi, I want to read a file from a specified offset from the start of file. With the read command, is it possible to do so. Please suggest. Is there any other alternative? Thanks, Saurabh (2 Replies)
Discussion started by: saurabhsinha23
2 Replies

8. UNIX for Dummies Questions & Answers

offset - informix chunk

Hello all, I am trying to add chunks to my informix dataspace. I have one dataspace ( the rootdbs ) and the new chunk is a raw device. Precisely slice1 on my new external harddisk. The question is, what should be the offset value. The document says, the offset is used by the engine to... (1 Reply)
Discussion started by: shibz
1 Replies
Login or Register to Ask a Question