Shell Programming and Scripting

I have a file which contains the data lines like below.I want to remove the tab spaces at the end of each line.I have tried with the command

Code:

sed 's/[ \t]\+$//' file

.but it does not work.Can anyone help me on this?

Code:

15022   15022   15022   15022   15022   15022
15023   15023   15023   15023   15023   15023
15074   15074   15074   15074   15074
15079   15079   15079   15079   15079
15080   15080   15080   15080
15113   15113   15113   15113
15118   15118   15118
15119   15119   15119
15172   15172
15173   15173
15174
15175
15176
15401   15401   15401   15401   15401   15401
15402   15402   15402   15402   15402   15402

Please use code tags as required by forum rules!

Well, seems to depend on the system that you use. It works for me as is on my linux system. On FreeBSD, this sed -r 's/[ ]+$//' file works, i.e. it uses the -r option to switch to EREs, and it needs an explicit <TAB> char inserted on the (bash) command line by Ctrl-V <TAB>.

In addition to what RudiC suggested, the following should work on most systems:

Code:

sed 's/[[:space:]]*$//' file

If you want to it on a Solaris/SunOS system, use /usr/xpg4/bin/sed instead of sed.

Note, however, that the sample input you supplied does not contain any trailing spaces or tabs on any of the lines.

Thanks both of you for answering my question. I am using PuTTY (which is a free implementation of Telnet and SSH for Windows and Unix platforms).
I have tried the commands which you both suggested but it did not work.I noticed one thing that when i use the commands

Code:

sed 's/[ \t]\+$//' file

and

Code:

sed 's/[[:space:]]*$//' file

the tab spaces at the end of the lines containing 6 fields are removed but not at the end of the lines containing less than 6 fields.
I mean to say when i use the above commands the tab space at the end of the line below is removed

Code:

15022   15022   15022   15022   15022   15022

and the tab space remained same at the end for these lines

Code:

15113   15113   15113   15113
15118   15118   15118
15119   15119   15119
15172   15172
15173   15173
15174
15175

Can you please look into this once?

---------- Post updated at 04:53 AM ---------- Previous update was at 04:50 AM ----------

One more thing i would like to add here,as Don said there are no trailing spaces in my data lines.and there is 1 tab space and 1 blank between each fields which i want to keep it as it is.and only thing is i want to remove the tab spaces at the end of each line even though the lines contains 6 fields or less than 6 fields.

Can't possibly be. Both sed solutions look just for the end-of-line and do not consider the field count. Even if there are more than one <TAB> due to missing fields, they are matched by the + sign in the regex and thus removed.
Please make sure there's no DOS line terminator (shown as \r, ^M or 0x0D)!

Thanks for replying Rudi. and i can not see any DOS line terminators in my file.

So - ...?