You are not logged in. Your edit will be placed in a queue until it is peer reviewed.
We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.
How to Edit
- Correct minor typos or mistakes
- Clarify meaning without changing it
- Add related resources or links
- Always respect the author’s intent
- Don’t use edits to reply to the author
How to Format
-
create code fences with backticks ` or tildes ~
```
like so
``` -
add language identifier to highlight code
```python
def function(foo):
print(foo)
``` - put returns between paragraphs
- for linebreak add 2 spaces at end
- _italic_ or **bold**
- indent code by 4 spaces
- backtick escapes
`like _so_`
- quote by placing > at start of line
- to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>
How to Tag
A tag is a keyword or label that categorizes your question with other, similar questions. Choose one or more (up to 5) tags that will help answerers to find and interpret your question.
- complete the sentence: my question is about...
- use tags that describe things or concepts that are essential, not incidental to your question
- favor using existing popular tags
- read the descriptions that appear below the tag
If your question is primarily about a topic for which you can't find a tag:
- combine multiple words into single-words with hyphens (e.g. windows-7), up to a maximum of 35 characters
- creating new tags is a privilege; if you can't yet create a tag you need, then post this question without it, then ask the community to create it for you
sed add line before phrase
returns for example fabianlee.org/2018/10/28/… among a lot others. Expressions like "not successful" and "command not working" aren't helpful. Instead consider "When I do X happens Y" with exact commands and results - thats a LOT easier to troubleshoot than "doesn't work". Also more descriptive question titles help understand what exactly you want to achieve.awk
fails. If yoursed
command contains only the name "Jim" you will get "Jim" every time. You need to figure out how to use a variable. I'd suggest checking GNU Bash Reference, TLDP Advanced Bash Scripting, GNU Sed Manual etc... a lot of resources are easily found.sed for beginners
orawk for beginners
. Even for specific things, like adding a line before a pattern withsed
- did you check that link? If you're able to understand Cisco manuals, any scripting tutorial is a piece of cake. Speaking from personal experience. You do need to put in some effort. Members of the community will help if you run into a wall, but nobody will write a script for you. Again speaking from personal experience.awk
, then use that variable instead of "Jim" in yoursed
line. Again, easily searchable, for example here's just the first result of many when googling how to read variable from file: tecmint.com/different-ways-to-read-file-in-bash-script