write-line new lines to existing file

**aaryan** · 28th Jun 2012 11:08 am

Hi All,

Help me know writing new lines to existing file.
eg. following line is existing in a file.

Code:

(write-line "Hello-World" "filename")

additional line to be written is

Code:

(write-line "Good Morning" "filename")

Thanks in advance
Aaryan.

**Tharwat** · 28th Jun 2012 11:12 am

the file name should be variable and not a string .

e.g .

Code:

(setq filename "Complete path of file name HERE")

(setq filename (open filename "w"))
(write-line "Good Moring honey " filename)
(close filename)

**MSasu** · 28th Jun 2012 11:14 am

You should look to Append mode of OPEN function for files access.

**MSasu** · 28th Jun 2012 11:24 am

Please try this code (don't remove the file):

Code:

(setq ff (open "C:\\test.txt" "w"))
 (write-line "1st line" ff)
(setq ff (close ff))

Then this one:

Code:

(setq ff (open "C:\\test.txt" "a"))
 (write-line "2nd line" ff)
(setq ff (close ff))

Now, may test again the first excerpt to see the difference.

**aaryan** · 28th Jun 2012 11:29 am

This is what i was missing APPEND mode.
Thank You So Much Mircea.

Regards
Aaryan

**pBe** · 28th Jun 2012 11:40 am

Originally Posted by MSasu

You should look to Append mode of OPEN function for files access.

Very subtle MSasu.

Thread: write-line new lines to existing file