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Top Forums Shell Programming and Scripting Insert character at specific location in a each line of the file Post 302983138 by greet_sed on Thursday 6th of October 2016 06:16:35 PM
Old 10-06-2016
Please use code tags for code snippet and quote tags for text input/output.

Example i gave is for file and it refers to line such as first , exclude last line.

Code:
sed -e '1{n};$!s/./&I/10' line

is wrong here.

Is below are contents of file or file names ?

Quote:
XXXXXXXXXXXXXXXXXXXXXXXXXXXXX 293800206774 XXXXXXXXXXXXXXXXX
10210496781000100293800206774 % 30095 15962835
10210496781000100293800206774 $ 34099 17054579
10210496781000100293800206774 # 999 00000000
Here is what i can simulate with multiple files:

Code:
ls 
123.txt  456.txt  f1  f2

Code:
for file in *.txt
do
echo "File Name=" $file
sed '1{n};$!s/./&a/10' $file
done

Gives output :
Quote:
File Name= 123.txt
1234567890ABCD
1234567890aXYZ
1234567890aPQR
1234567890LMN
File Name= 456.txt
1234567890ccc
1234567890abbb
1234567890addd
1234567890eee
Once you are sure that this is what you want, you can use in-place edit option
Code:
-i

to update in the file itself. Please note , you can not undo .

Last edited by greet_sed; 10-06-2016 at 07:20 PM.. Reason: update code tags / add -i option
This User Gave Thanks to greet_sed For This Post:
 

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COLORS(3)						   libbash colors Library Manual						 COLORS(3)

NAME
colors -- libbash library for setting tty colors. SYNOPSIS
colorSet <color> colorReset colorPrint [<indent>] <color> <text> colorPrintN [<indent>] <color> <text> DESCRIPTION
General colors is a collection of functions that make it very easy to put colored text on tty. The function list: colorSet Sets the color of the prints to the tty to COLOR colorReset Resets current tty color back to normal colorPrint Prints TEXT in the color COLOR indented by INDENT (without adding a newline) colorPrintN The same as colorPrint, but trailing newline is added Detailed interface description follows. Available colors: Green Red Yellow White The color parameter is non-case-sensitive (i.e. RED, red, ReD, and all the other forms are valid and are the same as Red). FUNCTIONS DESCRIPTIONS
colorSet <color> Sets the current printing color to color. colorReset Resets current tty color back to normal. colorPrint [<indent>] <color> Prints text using the color color indented by indent (without adding a newline). Parameters: <indent> The column to move to before start printing. This parameter is optional. If ommitted - start output from current cursor position. <color> The color to use. <color> The text to print. colorPrintN [<indent>] <color> The same as colorPrint, except a trailing newline is added. EXAMPLES
Printing a green 'Hello World' with a newline: Using colorSet: $ colorSet green $ echo 'Hello World' $ colorReset Using colorPrint: $ colorPrint 'Hello World'; echo Using colorPrintN: $ colorPrintN 'Hello World' AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <gil@ran4.net> SEE ALSO
ldbash(1), libbash(1) Linux Epoch Linux
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