IEEE Std 1003.1, 2004 Edition
IEEE Std 1003.1™-2008
Considerations for Utilities in Support of Files of Arbitrary Size
The following utilities support files of any size up to the maximum that can be created by the implementation. This support includes correct writing of file size-related values (such as file sizes and offsets, line numbers, and block counts) and correct interpretation of command line arguments that contain such values.
basename: Return non-directory portion of pathname.
cat: Concatenate and print files.
cd: Change working directory.
chgrp: Change file group ownership.
chmod: Change file modes.
chown: Change file ownership.
cksum: Write file checksums and sizes.
cmp: Compare two files.
cp: Copy files.
dd: Convert and copy a file.
df: Report free disk space.
dirname: Return directory portion of pathname.
du: Estimate file space usage.
find: Find files.
ln: Link files.
ls: List directory contents.
mkdir: Make directories.
mv: Move files.
pathchk: Check pathnames.
pwd:Return working directory name.
rm: Remove directory entries.
rmdir: Remove directories.
sh: Shell, the standard command language interpreter.
sum: Print checksum and block or byte count of a file.
test: Evaluate expression.
touch: Change file access and modification times.
ulimit: Set or report file size limit.
Exceptions to the requirement that utilities support files of any size up to the maximum are as follows:
- Uses of files as command scripts, or for configuration or control, are exempt. For example, it is not required that sh be able to read an arbitrarily large .profile.
- Shell input and output redirection are exempt. For example, it is not required that the redirections sum < file or echo foo > file succeed for an arbitrarily large existing file.
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