As for efficient, the most efficient would be truncate -s 0 filename see here. They both open and then close the file, using the truncate-on-open setting. They just can continue using the filedescriptor and gets all the new data. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more.
Most efficient method to empty the contents of a file Ask Question. Asked 8 years, 4 months ago. Active 10 months ago. Viewed k times. I am aware of three methods to delete all entries from a file.
Also, how does the three codes operate and delete the contents? Improve this question. Unix is Multi-user and Multitasking operating system which is used mainly as server in most of the applications. In this article i will give you the brief description of common unix commands which will useful to begin study of the unix. These Common Unix Commands are most commonly used commands which are related to date ,time ,username of logged in users,how to display calendar, host-name.
This command is most Basic Unix Commands which is used for displaying the log in name of user. The user can be able to log in for multiple users. So that there is need to display the login name. This command makes sense as it is using standard UNIX redirection to place the contents of one file a known empty one to another file.
Another way to do this, although a less obvious way and probably less readable in a shell script by others, is. Your participation helps us to help others. By visiting this site, users agree to our disclaimer.
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