04-27-2011
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi all
I need to strip blank lines from the end of a file. I have searched and found topics on how to strip lines from the entirety of a file - however I need to limit this to only the last 3-4 lines.
Any ideas?
Thanks (4 Replies)
Discussion started by: saabir
4 Replies
2. Shell Programming and Scripting
Hi,
I am trying to do two things in my script. I will really appreciate any help in this regards.
Is there a way to delete a last line from a pipe delimited flat file if the last line is blank. If the line is not blank then do nothing.....
Is there a way to count a word that are starting... (4 Replies)
Discussion started by: rkumar28
4 Replies
3. Shell Programming and Scripting
I am attempting to delete blank lines in my file and I've used this command:
sed '/^$/d' $file > $file.fixed
all this seems to do is copy the file and not delete the blank lines located at the end of the file. Any assistance would be greatly appreciated. (3 Replies)
Discussion started by: TL56
3 Replies
4. Shell Programming and Scripting
I have a text file with two coulmn
first column is just used in to show the line number, these line number are not there in the real file.
I want to delete the line 16(in this file) here, even tough there is no data inside it . this empty line is causing me a problem by throwing me garbage... (12 Replies)
Discussion started by: shashi792
12 Replies
5. UNIX for Dummies Questions & Answers
Alright, so I was looking around a bit on the forum before posting and still don't really understand so I figured I'd post my own question.
I am appending two files using
cat file_1.txt >> file_2.txt
The problem is that I need a blank line in between the two different text files and it does... (2 Replies)
Discussion started by: cgagnon
2 Replies
6. Shell Programming and Scripting
I am working on an assignment to pull all the records from excel sheet programatically and use the data for further calculations.
In this process, I first defined 10 records in excel sheet and executed the below code.
In the first run it is OK. But after deleting last few rows in excel sheet and... (0 Replies)
Discussion started by: giridhar276
0 Replies
7. Shell Programming and Scripting
I'm trying to delete the blank lines from the file $Sfile. tried the below set of commands. Both are giving the same error (: bad interpreter: No such file or directory)
awk 'NF > 0' $Sfile > $Tfile
cat $Tfile
sed -i '/^$/d' $Sfile
cat $Sfile
Not sure if there's any other problem with... (17 Replies)
Discussion started by: Pandee
17 Replies
8. UNIX for Advanced & Expert Users
Hi Gurus,
Somebody can say me how to delete blank spaces and blank lines in a file unix, please.
Thank you for advanced. (10 Replies)
Discussion started by: systemoper
10 Replies
9. Shell Programming and Scripting
Hi All
Need Help
I have a file with the below format (ABC.TXT) :
®¿¿ABCDHEJJSJJ|XCBJSKK01|M|7348974982790
HDFLJDKJSKJ|KJALKSD02|M|7378439274898
KJHSAJKHHJJ|LJDSAJKK03|F|9898982039999
(cont......)
I need to write a script where it will check for : blank lines (between rows,before... (6 Replies)
Discussion started by: chatwithsaurav
6 Replies
10. UNIX for Beginners Questions & Answers
PGW|PGW_CDR_|2017-06-23 141946|2017-07-17 131633|2017-08-21
PGW|PGW_CDR_|2017-06-23 141946|2017-07-17 131633|2017-08-21
PGW|PGW_CDR_|2017-06-23 141946|2017-07-17 131633|2017-08-21
PGW|PGW_CDR_|2017-06-23 141946|2017-07-17 131633|2017-08-21
PGW|PGW_CDR_|2017-06-23 141946|2017-07-17... (6 Replies)
Discussion started by: swathi reddy1
6 Replies
nl(1) General Commands Manual nl(1)
Name
nl - line numbering filter
Syntax
nl [-h type] [-b type] [-f type] [-v start#] [-i incr] [-p ] [-l num] [-s sep] [-w width] [-n format] [-d delim] file
Description
The command reads lines from the named file or from the standard input, if no file is named, and reproduces the lines on the standard out-
put. Lines are numbered on the left in accordance with the command options in effect.
The command views the text it reads in terms of logical pages. Line numbering is reset at the start of each logical page. A logical page
consists of a header, a body, and a footer section. Empty sections are valid. Different line numbering options are independently avail-
able for header, body, and footer. For example, you can elect not to number header and footer lines while numbering blank lines in the
body.
The start of logical page sections is signaled by input lines containing nothing but the following delimiter characters:
Line contents Start of
::: header
:: body
: footer
Unless otherwise specified, assumes that the text it is reading is in the body of a single logical page.
Options
Command options may appear in any order and may be intermingled with an optional file name. Only one file may be named.
-b type Specifies which logical page body lines are to be numbered. The following are recognized types and their meaning: a,
number all lines; t, number lines with printable text only; n, no line numbering; pstring, number only lines that con-
tain the regular expression specified in string.
The default type for logical page body is t (text lines numbered).
-h type Same as -b type except for header. Default type for logical page header is n (no lines numbered).
-f type Same as -b type except for footer. Default for logical page footer is n (no lines numbered).
-p Do not restart numbering at logical page delimiters.
-v start# The initial value used to number logical page lines. Default is 1.
-i incr The increment value used to number logical page lines. Default is 1.
-s sep The character used in separating the line number and the corresponding text line. Default sep is a tab.
-w width The number of characters used for the line number. Default width is 6.
-n format The line numbering format. Recognized values are the following: ln, left justified, leading zeroes suppressed; rn,
right justified, leading zeroes suppressed; rz, right justified, leading zeroes kept. Default format is rn (right jus-
tified).
-l num The number of blank lines to be considered as one. For example, -l2 results in only the second adjacent blank being
numbered (if the appropriate -ha, -ba, or -fa option is set). Default is 1.
-d xx The delimiter characters specifying the start of a logical page section may be changed from the default characters (:)
to two user-specified characters. If only one character is entered, the second character remains the default character
(:). No space should appear between the -d and the delimiter characters. To enter a backslash, you must type two
backslashes (//).
Examples
nl -v10 -i10 -d!+ file1
This command numbers file1 starting at line number 10 with an increment of ten. The logical page delimiters are !+.
See Also
pr(1)
nl(1)