summaryrefslogtreecommitdiff
path: root/1088/CH24/EX24.1
diff options
context:
space:
mode:
Diffstat (limited to '1088/CH24/EX24.1')
-rwxr-xr-x1088/CH24/EX24.1/Example1.sce59
-rwxr-xr-x1088/CH24/EX24.1/Result1.txt75
2 files changed, 134 insertions, 0 deletions
diff --git a/1088/CH24/EX24.1/Example1.sce b/1088/CH24/EX24.1/Example1.sce
new file mode 100755
index 000000000..045f764f7
--- /dev/null
+++ b/1088/CH24/EX24.1/Example1.sce
@@ -0,0 +1,59 @@
+clear
+flag=1
+mode(-1)
+clc
+
+printf("Example 1 : Show the method of showing all the type of process IDs \n")
+disp("****************************************************************")
+disp("Answer : ")
+disp("INSTRUCTIONS : ")
+halt(' ')
+disp("1.These programs are part of systems programming PURELY in Unix and the commands have NO EQUIVALENT IN SCILAB")
+halt(' ')
+disp("2.However the .c files which are displayed here are also made into a seperate file.If you are a unix user then try compiling and running the programme with gcc or cc compiler")
+halt(' ')
+disp("3.The outputs displayed here are just MOCK OUTPUTS which are DISPLAYED IN THE TEXTBOOK")
+halt(' ')
+disp("4.The inconvenience is regretted.")
+halt('.............Press [ENTER] to continue.....')
+halt("")
+clc
+printf("\tUNIX SHELL SIMULATOR(DEMO VERSION WITH PRELOADED COMMANDS)\n\n\n")
+i=0
+i=i+1;f(i)='/* Program: process.c -- Lists process and user credentials The PID, PPID, real and effective UIDs and GIDs */'
+i=i+1;f(i)='#include <stdio.h>'
+i=i+1;f(i)='int main(void) {'
+i=i+1;f(i)=' printf('+ascii(34)+'PID : %4d,PPDI : %4d\n'+ascii(34)+',getpid(),getppid());'
+i=i+1;f(i)=' printf('+ascii(34)+'UID : %4d, GID : %4d\n'+ascii(34)+',getuid(),getgid());'
+i=i+1;f(i)=' printf('+ascii(34)+'EUID : %4d,EGID : %4d\n'+ascii(34)+',geteuid(),getegid());'
+i=i+1;f(i)=' exit(0);'
+i=i+1;f(i)='}'
+n=i
+
+printf("\n\n$ cat process.c # to open the file emp.lst")
+halt(' ')
+u=mopen('process.c','wt')
+for i=1:n
+ mfprintf(u,"%s\n",f(i))
+ printf("%s\n",f(i))
+end
+mclose(u)
+halt('')
+clc
+
+halt(' ')
+ printf("$ cc process.c")
+ halt(' ')
+ printf("$ a.out")
+ halt(' ')
+ printf("PID : 1035, PPID: 1028\nUID : 102, GID: 10\nEUID: 102, EGID: 10\n")
+ halt(' ')
+
+printf("\n\n\n$ exit #To exit the current simulation terminal and return to Scilab console\n\n")
+halt("........# (hit [ENTER] for result)")
+//clc()
+
+printf("\n\n\t\t\tBACK TO SCILAB CONSOLE...\nLoading initial environment')
+sleep(1000)
+
+
diff --git a/1088/CH24/EX24.1/Result1.txt b/1088/CH24/EX24.1/Result1.txt
new file mode 100755
index 000000000..ddc5f891f
--- /dev/null
+++ b/1088/CH24/EX24.1/Result1.txt
@@ -0,0 +1,75 @@
+ ans =
+
+ 1.
+
+-->exec('Example1.sci')
+
+-->clear
+
+-->flag=1
+ flag =
+
+ 1.
+
+-->mode(-1)
+Current date is 23-Jun-2013
+
+Welcome to the Textbook Companionship Project 2013
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ Book Title : UNIX CONCEPTS AND APPLICATIONS
+
+ Book Edition : 4
+
+ Book Author : Sumitabha Das
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ Code Author : Pranav Bhat T
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ Chapter Number : 24
+
+ Chapter Title : Systems programming II- Process Control
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+Example 1 : Show the method of showing all the type of process IDs
+
+ ****************************************************************
+
+ Answer :
+
+ INSTRUCTIONS :
+
+ 1.These programs are part of systems programming PURELY in Unix and the commands have NO EQUIVALENT IN SCILAB
+
+ 2.However the .c files which are displayed here are also made into a seperate file.If you are a unix user then try compiling and
+ running the programme with gcc or cc compiler
+
+ 3.The outputs displayed here are just MOCK OUTPUTS which are DISPLAYED IN THE TEXTBOOK
+
+ 4.The inconvenience is regretted.
+.............Press [ENTER] to continue..... UNIX SHELL SIMULATOR(DEMO VERSION WITH PRELOADED COMMANDS)
+
+
+
+
+$ cat process.c # to open the file emp.lst /* Program: process.c -- Lists process and user credentials The PID, PPID, real and effective UIDs and GIDs */
+#include <stdio.h>
+int main(void) {
+ printf("PID : %4d,PPDI : %4d\n",getpid(),getppid());
+ printf("UID : %4d, GID : %4d\n",getuid(),getgid());
+ printf("EUID : %4d,EGID : %4d\n",geteuid(),getegid());
+ exit(0);
+}
+ $ cc process.c $ a.out PID : 1035, PPID: 1028
+UID : 102, GID: 10
+EUID: 102, EGID: 10
+
+
+
+$ exit #To exit the current simulation terminal and return to Scilab console
+
+........# (hit [ENTER] for result)
+
+ BACK TO SCILAB CONSOLE...
+Loading initial environment
+-->diary(0)