Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Insert a line of text on nth line of a file Post 302967454 by Don Cragun on Wednesday 24th of February 2016 02:55:07 AM
Old 02-24-2016
You might also want to try the following:
Code:
#!/bin/ksh
dir='/path/of/directory/to/process'
IAm=${0##*/}
tmpf="$IAm.$$"

trap 'rm -f "$tmpf"' EXIT

cd "$dir"
for file in *
do	[ ! -f "$file" ] && continue
	/usr/xpg4/bin/sed '13a\
this is the 14th line
	' "$file" > "$tmpf" && cp "$tmpf" "$file"
done

Obviously, you'll need to change the path shown in red to a path naming the directory in which you want to process your files.

If sed fails for some reason, it won't destroy the file you were trying to update (which RavinderSingh13's suggestion might do if the awk fails).

If there are any hard links to any of the files being processed, this script will maintain those links. (The code RavinderSingh13 suggested will break the links, if there are any, creating two separate (unlinked) files.)

This would probably also work with /usr/bin/sed on Solaris systems, but I'm almost positive it will work with /usr/xpg4/bin/sed. Unfortunately, I don't have a Solaris system available for testing.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Insert text file at a certain line.

I need to insert a file called temp_impact (which has about 15 lines in it) to a file called 11.23cfg starting at line 33. I searched the forums and found the sed '34i\ test' 11.23cfg > newfile That will enter word test at the appropriate line, but i need the entire file dumped there. Any... (4 Replies)
Discussion started by: insania
4 Replies

2. Shell Programming and Scripting

how to insert a extra line in a text file

how to insert a extra line in a text file using a sh command iam trying to think of a way to add a extra line but without deleting the whole text do anyone have any ideas (2 Replies)
Discussion started by: bhaviknp
2 Replies

3. Shell Programming and Scripting

Insert a line in a text file

So I need to write lines into line X of file X. I can get the file by doing: cfgnumber=$(cat -n -comm.cfg| grep -i "servicegroup_name 24x7-comunicacions") echo $cfgnumber it outputs the Line where it finds now I need to start writing something right bellow that line. thanks (10 Replies)
Discussion started by: 4scriptmoni
10 Replies

4. 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

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. UNIX for Dummies Questions & Answers

Insert a line in a sorted text file(s)

Hello, I am trying to add a line (usually just a word) to some text files in a directory that are already sorted. I just don't want to run the sort command again because it can take a long time when the text or log files are really huge. I have a bashscript that will take in the 1st argument... (7 Replies)
Discussion started by: raptor25
7 Replies

7. Shell Programming and Scripting

How to start reading from the nth line till the last line of a file.

Hi, For my reuirement, I have to read a file from the 2nd line till the last line<EOF>. Say, I have a file as test.txt, which as a header record in the first line followed by records in rest of the lines. for i in `cat test.txt` { echo $i } While doing the above loop, I have read... (5 Replies)
Discussion started by: machomaddy
5 Replies

8. UNIX for Dummies Questions & Answers

Insert a line in a text file

I want to insert a line with text after the 9th line of a text file. How would I do this using sed or awk? (2 Replies)
Discussion started by: lost.identity
2 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. Shell Programming and Scripting

Printing string from last field of the nth line of file to start (or end) of each line (awk I think)

My file (the output of an experiment) starts off looking like this, _____________________________________________________________ Subjects incorporated to date: 001 Data file started on machine PKSHS260-05CP ********************************************************************** Subject 1,... (9 Replies)
Discussion started by: samonl
9 Replies
is  a  text formatter.	Its input consists of the text to be out-
put, intermixed with formatting commands.  A  formatting  command
is  a  line  containing  the  control character followed by a two
character command name, and possibly one or more arguments.   The
control  character is initially . (dot).  The formatted output is
produced on standard output.  The formatting commands are  listed
below, with being a number, being a character, and being a title.
A + before n means it may be signed,  indicating  a  positive  or
negative change from the current value.  Initial values for where
relevant, are given in parentheses.
  .ad	  Adjust right margin.
  .ar	  Arabic page numbers.
  .br	  Line break.  Subsequent text will begin on a new line.
  .bl n   Insert n blank lines.
  .bp +n  Begin new page and number it n. No n means +1.
  .cc c   Control character is set to c.
  .ce n   Center the next n input lines.
  .de zz  Define a macro called zz. A line with .. ends definition.
  .ds	  Double space the output. Same as .ls 2.
  .ef t   Even page footer title is set to t.
  .eh t   Even page header title is set to t.
  .fi	  Begin filling output lines as full as possible.
  .fo t   Footer titles (even and odd) are set to t.
  .hc c   The character c (e.g., %) tells roff where hyphens are permitted.
  .he t   Header titles (even and odd) are set to t.
  .hx	  Header titles are suppressed.
  .hy n   Hyphenation is done if n is 1, suppressed if it is 0. Default is 1.
  .ig	  Ignore input lines until a line beginning with .. is found.
  .in n   Indent n spaces from the left margin; force line break.
  .ix n   Same as .in but continue filling output on current line.
  .li n   Literal text on next n lines.  Copy to output unmodified.
  .ll +n  Line length (including indent) is set to n (65).
  .ls +n  Line spacing: n (1) is 1 for single spacing, 2 for double, etc.
  .m1 n   Insert n (2) blank lines between top of page and header.
  .m2 n   Insert n (2) blank lines between header and start of text.
  .m3 n   Insert n (1) blank lines between end of text and footer.
  .m4 n   Insert n (3) blank lines between footer and end of page.
  .na	  No adjustment of the right margin.
  .ne n   Need n lines.  If fewer are left, go to next page.
  .nn +n  The next n output lines are not numbered.
  .n1	  Number output lines in left margin starting at 1.
  .n2 n   Number output lines starting at n.  If 0, stop numbering.
  .ni +n  Indent line numbers by n (0) spaces.
  .nf	  No more filling of lines.
  .nx f   Switch input to file f.
  .of t   Odd page footer title is set to t.
  .oh t   Odd page header title is set to t.
  .pa +n  Page adjust by n (1).  Same as .bp
  .pl +n  Paper length is n (66) lines.
  .po +n  Page offset.	Each line is started with n (0) spaces.
  .ro	  Page numbers are printed in Roman numerals.
  .sk n   Skip n pages (i.e., make them blank), starting with next one.
  .sp n   Insert n blank lines, except at top of page.
  .ss	  Single spacing.  Equivalent to .ls 1.
  .ta	  Set tab stops, e.g., .ta 9 17 25 33 41 49 57 65 73 (default).
  .tc c   Tabs are expanded into c.  Default is space.
  .ti n   Indent next line n spaces; then go back to previous indent.
  .tr ab  Translate a into b on output.
  .ul n   Underline the letters and numbers in the next n lines.
All times are GMT -4. The time now is 07:11 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy