4 changed files with 192 additions and 0 deletions
@ -0,0 +1,91 @@ |
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Write a Makefile. |
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Add octal escape support to echo. |
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Rework yes(1) to buffer input. This achieves greater throughput per system call. |
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|
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Write the following utilities: |
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ar |
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at/atd |
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basename |
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batch(?) |
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bc |
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cal |
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cat |
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chgrp |
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chmod |
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chownn |
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cksum |
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cmp |
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comm |
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compress(?) |
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cp |
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crond/crontab |
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csplit |
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cut |
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dd |
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df |
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diff |
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dirname |
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du |
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ed/x |
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expand(?) |
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expr |
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file |
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find |
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fold |
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fuser |
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grep |
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head |
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iconv |
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id |
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join |
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kill |
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link(?) |
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ln |
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locale |
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localedef |
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logname |
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lp(?) |
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ls |
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mesg |
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mkdir |
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mkfifo |
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mknod |
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mktemp |
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more |
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mv |
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newgrp(?) |
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nice |
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nl |
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paste |
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pathchk(?) |
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pax |
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printf |
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ps |
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pwd |
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renice |
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rm |
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rmdir |
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sed |
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sh |
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sleep |
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sort |
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split |
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strings |
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tabs |
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tail |
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talk(?) |
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tee |
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test |
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touch |
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tput |
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tr |
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true |
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tsort |
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uname |
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uncompress(?) |
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unexpand |
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uniq |
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wc |
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who |
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write(?) |
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xargs |
@ -0,0 +1,54 @@ |
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.TH echo 1 2021-11-21 mp-utils Userland |
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|
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.SH NAME |
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echo \- Print argv to stdout. |
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.PP |
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.SH SYNOPSIS |
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.PP |
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Print the provided arguments to stdout while applying |
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.SM |
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SUS |
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backslash escapes. |
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.SH DESCRIPTION |
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.PP |
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Echo is a standard Unix tool that accepts input from the user and prints it to stdout while applying minimal or no formatting. |
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.SH OPTIONS |
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.PP |
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This implementation of echo accepts no arguments. |
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.SH ENVIRONMENT |
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This implementation of echo requires a C89 compiler. |
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.SH FILES |
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/usr/src/mp-utils/src/echo.c |
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.SH CONFORMING TO |
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.PP |
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.SM |
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POSIX |
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2017, |
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.SM |
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SUS |
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3 |
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.SH NOTES |
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.PP |
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Including the following backslash-escapes modifies echo's behavior. |
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|
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\\a \- Print a BEL. |
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|
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\\b \- Print a backspace. |
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|
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\\f \- Print a form-feed. |
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|
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\\f \- Print a newline. |
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|
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\\r \- Print a carriage return. |
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|
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\\t \- Print a tabulation. |
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|
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\\v \- Print a vertical tabulation. |
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|
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\\c \- Suppress the trailing newline and ignore further input. |
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|
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.SH BUGS |
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.PP |
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Currently, \\0 (octal) escapes have not been implemented. |
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.SH SEE ALSO |
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echo(1p), printf(1) |
@ -0,0 +1,34 @@ |
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.TH yes 1 2021-11-21 mp-utils Userland |
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|
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.SH NAME |
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yes \- print to stdout forever |
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.PP |
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.SH SYNOPSIS |
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.PP |
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Print the provided string to stdout forever. |
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.SH DESCRIPTION |
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.PP |
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Yes is a standard Unix tool that accepts input from the user and prints it to stdout repeatedly, or y when no input is provided. |
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.SH OPTIONS |
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.PP |
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This implementation of yes accepts no arguments. |
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.SH ENVIRONMENT |
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This implementation of yes requires a C89 compiler. |
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.SH FILES |
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/usr/src/mp-utils/src/yes.c |
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.SH CONFORMING TO |
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.PP |
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.SM |
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POSIX |
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2017, |
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.SM |
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SUS |
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3 |
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.SH NOTES |
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.PP |
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None. |
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.SH BUGS |
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.PP |
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None known. |
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.SH SEE ALSO |
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yes(1p) |
@ -0,0 +1,13 @@ |
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#include "common.h" |
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|
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int main(int argc, char **argv) |
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{ |
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if(argc > 1) |
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while(1) |
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puts(argv[1]); |
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else |
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while(1) |
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puts("y"); |
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|
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return 0; |
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} |
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