While troubleshooting a filesystem mounted as /dev/sdb1 on /data, a Linux administrator finds that users cannot run scripts stored there. The partition is intended only for data files, and the administrator had added security-focused mount options earlier. Which mount option, if present, would block execution and should now be removed or modified to permit scripts to run?
The noexec mount option tells the kernel to deny attempts to execute any files located on the mounted filesystem, which stops both compiled binaries and scripts launched directly with the ./script.sh syntax. If users need to run scripts from /data, the entry in /etc/fstab should omit noexec (or the filesystem should be remounted without it). Nosuid merely ignores set-uid permissions, nodev prevents device files, and sync forces synchronous I/O; none of these options alone prevents execution.
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What does the 'noexec' mount option do?
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What is the purpose of the 'nosuid' mount option?
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How is the 'nodev' mount option different from 'noexec'?