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Full Discussion: Insert character at specific location in a each line of the file
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:
bharath561989
 

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LEARN ABOUT OSX

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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