04-25-2011
Plz Help Me in This question in Shell Programming
2- Write a bash shell script filestatic. The script should examine the number files in directories given as arguments (parameters) to this script.
a. if one argument is given, the script should count and report the number of files in this directory. Only regular files should be counted, not directories or subdirectories. Then the script should count and reports the number of bytes consumed by the files in this directory.
b. If tow arguments are given, the script should compare these two directories, and reports which directory contains more files. Only regular files should be counted, not directories or subdirectories..
- Output format and error handling should be analogous to that for the previous script (larger).
- Show the output of your script filestatic on the /etc directory of your Linux system. And Show the output filestatic /etc /tmp on your Linux system.
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RBASH(1) General Commands Manual RBASH(1)
NAME
rbash - restricted bash, see bash(1)
RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO
bash(1)
GNU Bash-4.0 2004 Apr 20 RBASH(1)