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sh - command interpreter
$ sh [OPTIONS]... -
echo - display a line of text
$ echo [STRING]... -
cat - concatenate files and print on the standard output
$ cat [FILE]... -
num - show line number of the specified file
$ cat file | num -
lsfd - display the occupying file descriptor and its property
$ lsfd -
ls - list directory contents
$ ls [-dFl] [file...] -
debug_info - show the current running status
$ debug_info [cpu|mem|fs|env|vma]
/$ /debug_info cpu
CPU status env name
0 started 1005 ns_input
1 started 2008 /debug_info
2 started 1003 ns_timer
3 started 2007 sh
/$ /debug_info mem
Total pages: 65536
Free pages: 62830
Used pages: 2706
Usage: 4.129028%
/$ /debug_info fs
Total blocks: 1024
Used blocks: 310
Usage: 30.273438%
/$ /debug_info env
Env Name Status CPU Run times Father Father name
1000 fs pending 2 1974 0
1001 ns pending 2 17151 0
1002 initsh running 2 454048 0
1003 ns_timer running 0 448687 1001 ns
1004 sh waiting 2 456317 1002 initsh
1005 ns_input running 0 451158 1001 ns
1006 ns_output pending 0 16 1001 ns
9007 sh running 1 215 1004 sh
8008 /debug_info running 1 31 9007 sh
/$ /debug_info vma 1000
Env 1000:
VMA Begin Size Perm
0 00200000 12bd2 6
1 00800000 6680 4
2 00807000 8000 6
3 eebf6000 8000 6
4 10000000 c0000000 6
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httpd - a web server and waits for the incoming client requests
$ httpd & -
pwd - print name of current/working directory
$ pwd -
touch - create empty file
$ touch FILE... -
rm - remove files or directories
$ rm [FILE]... -
mkdir - make directories
$ mkdir DIRECTORY... -
cd - switch current working directory
$ cd DIRECTORY -
mv - move (rename) files
$ mv SOURCE DIRECTORY