What are the commands to modify files in Linux?

Linux file modification commands include: 1. chmod, used to change the permissions of a file or directory; 2. chown, used to change the owner of a file or directory; 3. chattr, used to change the extended attributes of a file ; 4. truncate, used to truncate or clear files; 5. touch, used to update the access and modification timestamps of files; 6. mv, used to move or rename files; 7. cp, used to copy files; 8. rm, used to delete files; 9, ln, used to create symbolic links, etc.

#The operating system of this tutorial: linux6.4.3 system, Dell G3 computer.

In Linux systems, there are a variety of commands that can be used to modify file contents or attributes. The following are some commonly used file modification commands and their brief descriptions:

chmod: This command is used to change the permissions of a file or directory. It can control who can access a file by modifying its access, write and execution permissions. For example, chmod rwx file.txt sets the permissions on the file file.txt to read, write, and execute for all users.

chown: This command is used to change the owner of a file or directory. For example, chown user:group file.txt changes the owner of file file.txt to user and the group it belongs to.

chattr: This command is used to change the extended attributes of a file. For example, chattr i file.txt sets the attribute of file file.txt to non-deleteable.

truncate: This command is used to truncate or clear files. For example, truncate -s 0 file.txt will clear the contents of file file.txt.

touch: This command is used to update the access and modification timestamps of files. For example, touching file.txt will update the timestamp of file file.txt but will not change the file content.

mv: This command is used to move or rename files. For example, mv oldfile.txt newfile.txt renames the file oldfile.txt to newfile.txt.

cp: This command is used to copy files. For example, cp source.txt destination.txt copies source.txt to destination.txt.

rm: This command is used to delete files. For example, rm file.txt will delete the file file.txt.

ln: This command is used to create a symbolic link. For example, ln -s source.txt link.txt will create a symbolic link link.txt that points to source.txt.

These commands are just some of the commands that can be used to modify files in the Linux system. Depending on specific needs, other commands can also be used to modify file content or attributes. Please be careful when using these commands to avoid misoperation leading to file loss or data corruption.

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