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- The umask command is used to change the default file permission of newly created files12. The syntax for the Umask command is – umask [ value ]1. The value here is used to specify the file permissions. For example, the value of 444 in a Linux file permission means that everyone can only read the file1. You can put umask in your init script, configure init to start the program with a custom umask, pass the umask option if using start-stop-daemon, or modify the program itself to call the umask function or system call3.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.The umask command is used to change the default file permission of newly created files. The syntax for the Umask command is – umask [ value ] The value here is used to specify the file permissions. Like the value of 444 in a Linux file permission means that everyone can only read the file.www.geeksforgeeks.org/shell-scripting-umask-com…The umask Command The umask command sets the file-creation mask using this format: umask mask where mask is an octal number or symbolic value that correspond to the permissions to be disabled. Here, the write and execute permissions for group and others are removed: $ umask 033 $ touch tmp $ ls -l tmp -rw-r--r-- 1 root 9 Sep 2 11:18 tmpwww.oreilly.com/library/view/korn-shell-unix/02016…put umask in your init script (do a grep umask /etc/init.d/* for an example) configure init to start the program with a custom umask (systemd.exec upstart umask) if using start-stop-daemon, pass the umask option modify the program itself to call the umask function or system callunix.stackexchange.com/questions/36220/how-to-s…
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