Sponsored Content
Top Forums Shell Programming and Scripting Sed insert text at first line of empty file Post 302497747 by Ygor on Friday 18th of February 2011 01:39:50 AM
Old 02-18-2011
I think sed only works on lines. A zero-byte file has no lines, so that could be the problem.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

SED- Insert text at top of file

Does anyone know how to insert text at the top and bottom of a file using sed? (12 Replies)
Discussion started by: MBGPS
12 Replies

2. Shell Programming and Scripting

How to insert some constant text at beginig of each line within a text file.

Dear Folks :), I am new to UNIX scripting and I do not know how can I insert some text in the first column of a UNIX text file at command promtp. I can do this in vi editor by using this command :g/^/s//BBB_ e,g I have a file named as Test.dat and it containins below text: michal... (4 Replies)
Discussion started by: Muhammad Afzal
4 Replies

3. Shell Programming and Scripting

Need to insert new text and change existing text in a file using SED

Hi all, I need to insert new text and change existing text in a file. For that I used the below line in the command line and got the expected output. sed '$a\ hi... ' shell > shell1 But I face problem when using the same in script. It is throwing the error as, sed: command garbled:... (4 Replies)
Discussion started by: iamgeethuj
4 Replies

4. Shell Programming and Scripting

sed insert text at particular line

I know that sed -n '12p' file will print line 12 but how might I insert text to a specified line? thanks (2 Replies)
Discussion started by: action_owl
2 Replies

5. Shell Programming and Scripting

Using sed to insert text file at first line

sed '1r file.txt' <source.txt >desti.txt This example will insert 'file.txt' between line 1 and 2 of source.txt. sed '0r file.txt' <source.txt >desti.txt gives an error message. Does anyone know how 'sed' can insert 'file.txt' before the first line of source.txt? (18 Replies)
Discussion started by: psve
18 Replies

6. Shell Programming and Scripting

Delete the last empty/blank line of the text file

Hi All, I have a file.txt which seems like having three lines. wc -l file.txt 3 file.txt In fact, once it is open in text editor, this file has four lines where the last line is empty. how can i delete this last empty line of the file.txt? I tried the codes below so far but they... (6 Replies)
Discussion started by: senayasma
6 Replies

7. Shell Programming and Scripting

insert text into empty file

I have an awk script to extract data from several files and create output in the following format as a csv file: xxxx 01/04/12 0001 0 When data is present, I have a file. When no data is available in the input files, I would still like to create a file that looks like this: xxxx... (1 Reply)
Discussion started by: banjo25
1 Replies

8. Shell Programming and Scripting

sed - insert text if column empty

Hi, I want to insert the text 'Unknown' in 2 specific columns in a csv file (actually | separated) if the column is blank. Its always the same columns. I have tried using sed: sed "s/||/|Unknown|/g" but there are occasion where other fields are blank and they need to be left blank. This... (4 Replies)
Discussion started by: ksexton
4 Replies

9. Shell Programming and Scripting

How to read a text file line by line and insert into a database table?

I have a test file that I want to read and insert only certain lines into the the table based on a filter. 1. Rread the log file 12 Hours back Getdate() -12 Hours 2. Extract the following information on for lines that say "DUMP is complete" A. Date B. Database Name C.... (2 Replies)
Discussion started by: JolietJake
2 Replies

10. UNIX for Beginners Questions & Answers

Insert a line of text on nth line of a file

Hi All, I am using UNix Sun OS sun4u sparc SUNW,SPARC-Enterprise My intention is to insert a line of text after 13th line of every file inside a particular directory. While trying to do it for a single file , i am using sed sed '3 i this is the 4th line' filename sed: command garbled: 3... (5 Replies)
Discussion started by: gotamp
5 Replies
has_ic(3XCURSES)					  X/Open Curses Library Functions					  has_ic(3XCURSES)

NAME
has_ic, has_il - determine insert/delete character/line capability SYNOPSIS
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib -R /usr/xpg4/lib -lcurses [ library... ] c89 [ flag... ] file... -lcurses [ library... ] #include <curses.h> bool has_ic(void); bool has_il(void); DESCRIPTION
The has_ic() function determines whether or not the terminal has insert/delete character capability. The has_il() function determines whether or not the terminal has insert/delete line capability. RETURN VALUES
The has_ic() function returns TRUE if the terminal has insert/delete character capability and FALSE otherwise. The has_il() function returns TRUE if the terminal has insert/delete line capability and FALSE otherwise. ERRORS
None. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
libcurses(3XCURSES), attributes(5), standards(5) SunOS 5.10 5 Jun 2002 has_ic(3XCURSES)
All times are GMT -4. The time now is 09:54 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy