shell.c:
It is the main shell file.
pwd.c:
Gives present working directory.
<username@systemnme:~>pwd
>>present working directory
printline.c:
Printing of <username@system_name:curr_dir> is handled by this.
pinfo.c:
- pinfo : prints the process related info of your shell program.
- pinfo <pid> : prints the process info about given pid.
makefile.sh:
compiles all nessary files shell.
run by typing bash makefile.sh
ls.c:
Lists all files in various formats.
- ls
- ls -l
- ls -la
- ls -al
- ls -a
- ls <Dirname>
In ls -l and similar comands file name is printed in next line.
cd.c:
Change Directory
**Assumptions**
*ALLOWED:
cd ~/Ayush/Goyal
cd ./xyz/abc
cd ..
cd ../../../goyal
*NOT ALLOWED
cd ./../cs
cd ~/Ayush/../Downloads
cd /home/Ayush
cd ayush
restall.c contains foreground and background.
pipe.c contains piping comands.
reddir. contains redirection commands.
All other commands are treated as system commands like : emacs, vi and so on. The shell will be able to
execute them either in the background or in the foreground.
For background put "&" in last.