Top Forums UNIX for Beginners Questions & Answers How to increment version inside a file? Post 303015401 by akshayupadhayay on Wednesday 4th of April 2018 07:24:19 AM
Old 04-04-2018
How to increment version inside a file?

Hi All,

I need to write a shell script which opens a file and increments the version(text) within the file every time the script runs. For example:

Code:
[user@server]$ cat docker_file.yml

version: '3.1'
services:
  ui:
    image: repo-srv.dev.io:5000/facebook/ui:0.0.2-QA1

[user@server]$


So, I would like to update version: 3.1 to version: 3.2 and ui:0.0.2-QA1 to ui:0.0.3-QA1 every time docker_file.yml is opened.

Thanks in advance!

Last edited by akshayupadhayay; 04-04-2018 at 09:27 AM.. Reason: grammer
 

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NICE(1) 						    BSD General Commands Manual 						   NICE(1)

NAME
nice -- execute a utility with an altered scheduling priority SYNOPSIS
nice [-n increment] utility [argument ...] DESCRIPTION
nice runs utility at an altered scheduling priority. If an increment is given, it is used; otherwise an increment of 10 is assumed. The super-user can run utilities with priorities higher than normal by using a negative increment. The priority can be adjusted over a range of -20 (the highest) to 20 (the lowest). A priority of 19 or 20 will prevent a process from taking any cycles from others at nice 0 or better. Available options: -n increment A positive or negative decimal integer used to modify the system scheduling priority of utility. EXIT STATUS
The nice utility exits with one of the following values: 1-125 An error occurred in the nice utility. 126 The utility was found but could not be invoked. 127 The utility could not be found. Otherwise, the exit status of nice will be that of utility. COMPATIBILITY
The historic -increment option has been deprecated but is still supported in this implementation. SEE ALSO
csh(1), getpriority(2), setpriority(2), renice(8) STANDARDS
The nice utility conforms to IEEE Std 1003.2-1992 (``POSIX.2''). HISTORY
A nice utility appeared in Version 6 AT&T UNIX. BUGS
nice is built into csh(1) with a slightly different syntax than described here. The form 'nice +10' nices to positive nice, and 'nice -10' can be used by the super-user to give a process more of the processor. BSD
June 6, 1993 BSD

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