Find all lines containing only the same character and replace with the same amount of another character
0
My goal is to convert a NEWS format (the output of appstream-util appdata-to-news) to a markdown format (to use on GitHub/GitLab).
A good approximation for me would be to just go from this:
Version 0.5.1
~~~~~~~~~~~~~
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
to this
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
But my current solution with tr '~' '=' gives me this:
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a = tilde ====
* Second line
The regex to find all the lines containing only ~ should be this: ^~*$
But how can, with bash/sed/awk, replace with the same amount of =?
text-processing awk sed
edited Jan 14 at 22:25
don_crissti
50.3k15134162
asked Jan 14 at 21:59
Roberto LeinardiRoberto Leinardi
1033
New contributor
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
0
My goal is to convert a NEWS format (the output of appstream-util appdata-to-news) to a markdown format (to use on GitHub/GitLab).
A good approximation for me would be to just go from this:
Version 0.5.1
~~~~~~~~~~~~~
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
to this
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
But my current solution with tr '~' '=' gives me this:
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a = tilde ====
* Second line
The regex to find all the lines containing only ~ should be this: ^~*$
But how can, with bash/sed/awk, replace with the same amount of =?
text-processing awk sed
edited Jan 14 at 22:25
don_crissti
50.3k15134162
asked Jan 14 at 21:59
Roberto LeinardiRoberto Leinardi
1033
New contributor
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Is it only tilde-only lines you want to replace, or are there other characters?
– DopeGhoti
Jan 14 at 22:03
As far as I know is tilde only, beside the new line at the end.
– Roberto Leinardi
Jan 14 at 22:04
add a comment |
0
0
0
My goal is to convert a NEWS format (the output of appstream-util appdata-to-news) to a markdown format (to use on GitHub/GitLab).
A good approximation for me would be to just go from this:
Version 0.5.1
~~~~~~~~~~~~~
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
to this
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
But my current solution with tr '~' '=' gives me this:
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a = tilde ====
* Second line
The regex to find all the lines containing only ~ should be this: ^~*$
But how can, with bash/sed/awk, replace with the same amount of =?
text-processing awk sed
edited Jan 14 at 22:25
don_crissti
50.3k15134162
asked Jan 14 at 21:59
Roberto LeinardiRoberto Leinardi
1033
New contributor
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
My goal is to convert a NEWS format (the output of appstream-util appdata-to-news) to a markdown format (to use on GitHub/GitLab).
A good approximation for me would be to just go from this:
Version 0.5.1
~~~~~~~~~~~~~
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
to this
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
But my current solution with tr '~' '=' gives me this:
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a = tilde ====
* Second line
The regex to find all the lines containing only ~ should be this: ^~*$
But how can, with bash/sed/awk, replace with the same amount of =?
text-processing awk sed
text-processing awk sed
edited Jan 14 at 22:25
don_crissti
50.3k15134162
asked Jan 14 at 21:59
Roberto LeinardiRoberto Leinardi
1033
New contributor
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited Jan 14 at 22:25
don_crissti
50.3k15134162
asked Jan 14 at 21:59
Roberto LeinardiRoberto Leinardi
1033
New contributor
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited Jan 14 at 22:25
don_crissti
50.3k15134162
edited Jan 14 at 22:25
don_crissti
50.3k15134162
edited Jan 14 at 22:25
don_crissti
50.3k15134162
50.3k15134162
asked Jan 14 at 21:59
Roberto LeinardiRoberto Leinardi
1033
New contributor
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Jan 14 at 21:59
Roberto LeinardiRoberto Leinardi
1033
asked Jan 14 at 21:59
Roberto LeinardiRoberto Leinardi
1033
1033
New contributor
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Roberto Leinardi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Is it only tilde-only lines you want to replace, or are there other characters?
– DopeGhoti
Jan 14 at 22:03
As far as I know is tilde only, beside the new line at the end.
– Roberto Leinardi
Jan 14 at 22:04
add a comment |
Is it only tilde-only lines you want to replace, or are there other characters?
– DopeGhoti
Jan 14 at 22:03
As far as I know is tilde only, beside the new line at the end.
– Roberto Leinardi
Jan 14 at 22:04
Is it only tilde-only lines you want to replace, or are there other characters?
– DopeGhoti
Jan 14 at 22:03
Is it only tilde-only lines you want to replace, or are there other characters?
– DopeGhoti
Jan 14 at 22:03
As far as I know is tilde only, beside the new line at the end.
– Roberto Leinardi
Jan 14 at 22:04
As far as I know is tilde only, beside the new line at the end.
– Roberto Leinardi
Jan 14 at 22:04
add a comment |
2 Answers
2
active
oldest
votes
4
You can pattern match for lines that contain only tilde characters, and then perform a character-by-character replacement
sed '/^~*$/s/~/=/g'
answered Jan 14 at 22:03
roaimaroaima
43.5k553116
It works! Thanks!
– Roberto Leinardi
Jan 14 at 22:05
3
orsed '/[^~]/!y/~/=/'if you want to usesed's builtintr
– don_crissti
Jan 14 at 22:28
@don_crissti trying to get my head around "find lines without a tilde; and then don't replace it" :-) Elegant. But not immediately readable...
– roaima
Jan 14 at 22:59
1
Or,sed -E '/^(.)1*$/ s/./=/g'which does not hardcode the tilde character.
– glenn jackman
Jan 14 at 23:06
It's more like "on lines with other chars (those lines may or may not contain tilde chars) don't translate...". As to the readability, yes, it'ssed: it's not for everyone :)
– don_crissti
Jan 14 at 23:09
add a comment |
0
I Tried with below sed command and it worked fine
Command: sed '/Version/{n;s/~/=/g}' filename
e
n_linux_example ~]# sed '/Version/{n;s/~/=/g}' filename
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
[root@praveen_linux_example ~]#
answered Jan 16 at 18:10
Praveen Kumar BSPraveen Kumar BS
1,346138
add a comment |
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2 Answers
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active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
4
You can pattern match for lines that contain only tilde characters, and then perform a character-by-character replacement
sed '/^~*$/s/~/=/g'
answered Jan 14 at 22:03
roaimaroaima
43.5k553116
It works! Thanks!
– Roberto Leinardi
Jan 14 at 22:05
3
orsed '/[^~]/!y/~/=/'if you want to usesed's builtintr
– don_crissti
Jan 14 at 22:28
@don_crissti trying to get my head around "find lines without a tilde; and then don't replace it" :-) Elegant. But not immediately readable...
– roaima
Jan 14 at 22:59
1
Or,sed -E '/^(.)1*$/ s/./=/g'which does not hardcode the tilde character.
– glenn jackman
Jan 14 at 23:06
It's more like "on lines with other chars (those lines may or may not contain tilde chars) don't translate...". As to the readability, yes, it'ssed: it's not for everyone :)
– don_crissti
Jan 14 at 23:09
add a comment |
4
You can pattern match for lines that contain only tilde characters, and then perform a character-by-character replacement
sed '/^~*$/s/~/=/g'
answered Jan 14 at 22:03
roaimaroaima
43.5k553116
It works! Thanks!
– Roberto Leinardi
Jan 14 at 22:05
3
orsed '/[^~]/!y/~/=/'if you want to usesed's builtintr
– don_crissti
Jan 14 at 22:28
@don_crissti trying to get my head around "find lines without a tilde; and then don't replace it" :-) Elegant. But not immediately readable...
– roaima
Jan 14 at 22:59
1
Or,sed -E '/^(.)1*$/ s/./=/g'which does not hardcode the tilde character.
– glenn jackman
Jan 14 at 23:06
It's more like "on lines with other chars (those lines may or may not contain tilde chars) don't translate...". As to the readability, yes, it'ssed: it's not for everyone :)
– don_crissti
Jan 14 at 23:09
add a comment |
4
4
4
You can pattern match for lines that contain only tilde characters, and then perform a character-by-character replacement
sed '/^~*$/s/~/=/g'
answered Jan 14 at 22:03
roaimaroaima
43.5k553116
You can pattern match for lines that contain only tilde characters, and then perform a character-by-character replacement
sed '/^~*$/s/~/=/g'
answered Jan 14 at 22:03
roaimaroaima
43.5k553116
answered Jan 14 at 22:03
roaimaroaima
43.5k553116
answered Jan 14 at 22:03
roaimaroaima
43.5k553116
answered Jan 14 at 22:03
roaimaroaima
43.5k553116
43.5k553116
It works! Thanks!
– Roberto Leinardi
Jan 14 at 22:05
3
orsed '/[^~]/!y/~/=/'if you want to usesed's builtintr
– don_crissti
Jan 14 at 22:28
@don_crissti trying to get my head around "find lines without a tilde; and then don't replace it" :-) Elegant. But not immediately readable...
– roaima
Jan 14 at 22:59
1
Or,sed -E '/^(.)1*$/ s/./=/g'which does not hardcode the tilde character.
– glenn jackman
Jan 14 at 23:06
It's more like "on lines with other chars (those lines may or may not contain tilde chars) don't translate...". As to the readability, yes, it'ssed: it's not for everyone :)
– don_crissti
Jan 14 at 23:09
add a comment |
It works! Thanks!
– Roberto Leinardi
Jan 14 at 22:05
3
orsed '/[^~]/!y/~/=/'if you want to usesed's builtintr
– don_crissti
Jan 14 at 22:28
@don_crissti trying to get my head around "find lines without a tilde; and then don't replace it" :-) Elegant. But not immediately readable...
– roaima
Jan 14 at 22:59
1
Or,sed -E '/^(.)1*$/ s/./=/g'which does not hardcode the tilde character.
– glenn jackman
Jan 14 at 23:06
It's more like "on lines with other chars (those lines may or may not contain tilde chars) don't translate...". As to the readability, yes, it'ssed: it's not for everyone :)
– don_crissti
Jan 14 at 23:09
It works! Thanks!
– Roberto Leinardi
Jan 14 at 22:05
It works! Thanks!
– Roberto Leinardi
Jan 14 at 22:05
3
3
or
sed '/[^~]/!y/~/=/' if you want to use sed's builtin tr– don_crissti
Jan 14 at 22:28
or
sed '/[^~]/!y/~/=/' if you want to use sed's builtin tr– don_crissti
Jan 14 at 22:28
@don_crissti trying to get my head around "find lines without a tilde; and then don't replace it" :-) Elegant. But not immediately readable...
– roaima
Jan 14 at 22:59
@don_crissti trying to get my head around "find lines without a tilde; and then don't replace it" :-) Elegant. But not immediately readable...
– roaima
Jan 14 at 22:59
1
1
Or,
sed -E '/^(.)1*$/ s/./=/g' which does not hardcode the tilde character.– glenn jackman
Jan 14 at 23:06
Or,
sed -E '/^(.)1*$/ s/./=/g' which does not hardcode the tilde character.– glenn jackman
Jan 14 at 23:06
It's more like "on lines with other chars (those lines may or may not contain tilde chars) don't translate...". As to the readability, yes, it's
sed: it's not for everyone :)– don_crissti
Jan 14 at 23:09
It's more like "on lines with other chars (those lines may or may not contain tilde chars) don't translate...". As to the readability, yes, it's
sed: it's not for everyone :)– don_crissti
Jan 14 at 23:09
add a comment |
0
I Tried with below sed command and it worked fine
Command: sed '/Version/{n;s/~/=/g}' filename
e
n_linux_example ~]# sed '/Version/{n;s/~/=/g}' filename
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
[root@praveen_linux_example ~]#
answered Jan 16 at 18:10
Praveen Kumar BSPraveen Kumar BS
1,346138
add a comment |
0
I Tried with below sed command and it worked fine
Command: sed '/Version/{n;s/~/=/g}' filename
e
n_linux_example ~]# sed '/Version/{n;s/~/=/g}' filename
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
[root@praveen_linux_example ~]#
answered Jan 16 at 18:10
Praveen Kumar BSPraveen Kumar BS
1,346138
add a comment |
0
0
0
I Tried with below sed command and it worked fine
Command: sed '/Version/{n;s/~/=/g}' filename
e
n_linux_example ~]# sed '/Version/{n;s/~/=/g}' filename
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
[root@praveen_linux_example ~]#
answered Jan 16 at 18:10
Praveen Kumar BSPraveen Kumar BS
1,346138
I Tried with below sed command and it worked fine
Command: sed '/Version/{n;s/~/=/g}' filename
e
n_linux_example ~]# sed '/Version/{n;s/~/=/g}' filename
Version 0.5.1
=============
Released: 2019-01-03
* This is a test with a ~ tilde ~~~~
* Second line
[root@praveen_linux_example ~]#
answered Jan 16 at 18:10
Praveen Kumar BSPraveen Kumar BS
1,346138
answered Jan 16 at 18:10
Praveen Kumar BSPraveen Kumar BS
1,346138
answered Jan 16 at 18:10
Praveen Kumar BSPraveen Kumar BS
1,346138
answered Jan 16 at 18:10
Praveen Kumar BSPraveen Kumar BS
1,346138
1,346138
add a comment |
add a comment |
Roberto Leinardi is a new contributor. Be nice, and check out our Code of Conduct.
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Roberto Leinardi is a new contributor. Be nice, and check out our Code of Conduct.
Roberto Leinardi is a new contributor. Be nice, and check out our Code of Conduct.
Roberto Leinardi is a new contributor. Be nice, and check out our Code of Conduct.
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Is it only tilde-only lines you want to replace, or are there other characters?
– DopeGhoti
Jan 14 at 22:03
As far as I know is tilde only, beside the new line at the end.
– Roberto Leinardi
Jan 14 at 22:04