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$ **man chmod**
CHMOD(1) BSD General Commands Manual CHMOD(1)
chmod -- change file modes or Access Control Lists
chmod [-fv] [-R [-H | -L | -P]] mode file ...
chmod [-fv] [-R [-H | -L | -P]] [-a | +a | =a] ACE file ...
chmod [-fhv] [-R [-H | -L | -P]] [-E] file ...
chmod [-fhv] [-R [-H | -L | -P]] [-C] file ...
chmod [-fhv] [-R [-H | -L | -P]] [-N] file ...
The chmod utility modifies the file mode bits of the listed files as
specified by the mode operand. It may also be used to modify the Access
Control Lists (ACLs) associated with the listed files.
The generic options are as follows:
-f Do not display a diagnostic message if chmod could not modify the
mode for file.
-H If the -R option is specified, symbolic links on the command line
are followed. (Symbolic links encountered in the tree traversal
are not followed by default.)
-h If the file is a symbolic link, change the mode of the link
itself rather than the file that the link points to.
-L If the -R option is specified, all symbolic links are followed.
-P If the -R option is specified, no symbolic links are followed.
This is the default.
-R Change the modes of the file hierarchies rooted in the files
instead of just the files themselves.
-v Cause chmod to be verbose, showing filenames as the mode is modi-
fied. If the -v flag is specified more than once, the old and
new modes of the file will also be printed, in both octal and
The -H, -L and -P options are ignored unless the -R option is specified.
In addition, these options override each other and the command's actions
are determined by the last one specified.
Only the owner of a file or the super-user is permitted to change the
mode of a file.
Columns within SGD_features.tab:
1. Primary Standfor Gene Database ID (SGDID) (mandatory)
2. Feature type (mandatory)
3. Feature qualifier (optional)
4. Feature name (optional)
5. Standard gene name (optional)
6. Alias (optional, multiples separated by |)
7. Parent feature name (optional)
8. Secondary SGDID (optional, multiples separated by |)
9. Chromosome (optional)
10. Start_coordinate (optional)
11. Stop_coordinate (optional)
12. Strand (optional)
13. Genetic position (optional)
14. Coordinate version (optional)
15. Sequence version (optional)
16. Description (optional)
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