regex in shell script

[knzzz]

Hi All

How to do the below mentioned tasks using shell scripts I have two doubts

1.Let's consider file1.txt i need to edit the content of using vim editor for a specific line which has abc key word

in details

inside the file1.txt

10.20.3.5.7 xyhz yyzhhh

11.15.89.56 abc tgh


in the above file content i need change the ip which has the line abc key word . How to change it ?


2. how to do the sftp using shell script , sftp is passwordless?

[desertcat]

My two favourite program form file editing are mc (Midnight Commander) and Sublime which is "vim" on steroids which is great if you are looking for a specific line number.

[fdisk]

Something like this:

Code: Select all

sed -r /abc/s/"(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])"/"192.168.1.1"/g file1.txt