Script started on Wed Nov  6 12:30:35 2024
mweeks@air:programs$ echo 6329
6329
mweeks@air:programs$ deleq -h 
 
deleq - by Michael Weeks 
   Delete a file if it is equal to another.
 Given two filenames, determine is f1 == f2, and if so, delete f1.
 
 Usage:
   deleq -h               prints this message and quit
   deleq fname1 fname2    delete fname1 if contents equal fname2's
 
mweeks@air:programs$ history | grep find | grep name
  503  history | grep find | grep name
mweeks@air:programs$ echo this is not going to work
this is not going to work
mweeks@air:programs$ find . -name hello 
mweeks@air:programs$ find . -name hello*
find: hello2.c: unknown primary or operator
mweeks@air:programs$ find . -name hello*
find: hello2.c: unknown primary or operator
mweeks@air:programs$ find . -name "hello*"
./hello.c
./unix_ch3/bash_scripts_lab/helloWorld.sh
./unix_ch3/bash_scripts_lab/hello.sh
./hello2.c
./more_programs/hello.c
./C_ch2/hello.c
./C_ch2/hello_parts_c_pgm.c
./C_ch2/hello_3320.c
mweeks@air:programs$ find . -name "script3.*"
./unix_ch4/script3.csh
mweeks@air:programs$ find C_ch2 -name "hello*"
C_ch2/hello.c
C_ch2/hello_parts_c_pgm.c
C_ch2/hello_3320.c
mweeks@air:programs$ find / -name index.html > ~/results.txt  
mweeks@air:programs$  cd unix_ch4
mweeks@air:unix_ch4$ cat script3.csh
#!/bin/csh
echo first argument is $1, all args are $*
shift
echo first argument is $1, all args are $*
 
echo " "
echo "Example:"
echo "$ script3.csh a b c d"
echo "first argument is a, all args are a b c d"
echo "first argument is b, all args are b c d" 

mweeks@air:unix_ch4$ ./script3.cash
bash: ./script3.cash: No such file or directory
mweeks@air:unix_ch4$ ./script3.csh
first argument is , all args are
shift: No more words.
mweeks@air:unix_ch4$ ./script3.csh a b c d
first argument is a, all args are a b c d
first argument is b, all args are b c d
 
Example:
$ script3.csh a b c d
first argument is a, all args are a b c d
first argument is b, all args are b c d
mweeks@air:unix_ch4$ ssh mweeks@hallertau.cs.gsu.edu
mweeks@hallertau.cs.gsu.edu's password: 
   +
   |   GSU Computer Science
   |   Faculty Research Server
   |   HALLERTAU.cs.gsu.edu
   +
No mail.
Last login: Mon Nov  4 14:00:23 2024 from 131.96.220.66
mweeks@hallertau:~$ 
mweeks@hallertau:~$ 
mweeks@hallertau:~$ crontab -l
# Edit this file to introduce tasks to be run by cron.
# 
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
# 
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').# 
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
# 
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
# 
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
# 
# For more information see the manual pages of crontab(5) and cron(8)
# 
# every Friday at 10:30 a.m., post a new homework
#30 10 * * 5 /usr/local/bin/addAnotherHmwk.sh
#
# m h  dom mon dow   command
45 6 * * 1 /usr/local/bin/addAnotherHmwk.sh
50 6 * * 1 /usr/local/bin/addAnotherLab.sh 
0 6 * * * /usr/local/bin/gm_vacation
0 7 * * 3 /usr/local/bin/preview_labs
mweeks@hallertau:~$ exit
logout
Connection to hallertau.cs.gsu.edu closed.
mweeks@air:unix_ch4$ ls *sh
script2.csh	script3.csh
mweeks@air:unix_ch4$ ls -l *sh
-rwx------  1 mweeks  staff  212 Aug  5 23:48 script2.csh
-rwx------  1 mweeks  staff  257 Nov  4 08:25 script3.csh
mweeks@air:unix_ch4$ ls -l *sh | awk '{ print $9 }'
script2.csh
script3.csh
mweeks@air:unix_ch4$ ls -l *sh | awk '{ print $9" "$6" "$7 }'
script2.csh Aug 5
script3.csh Nov 4
mweeks@air:unix_ch4$ cd ~/Desktop/Projects/MCTS_game/
mweeks@air:MCTS_game$ git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean
mweeks@air:MCTS_game$ vi MCTS_tree.fig
mweeks@air:MCTS_game$ git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean
mweeks@air:MCTS_game$ vi MCTS_tree.fig
mweeks@air:MCTS_game$ cat > newfile
this is a new file.
mweeks@air:MCTS_game$ git status
On branch master
Your branch is up to date with 'origin/master'.

Untracked files:
  (use "git add <file>..." to include in what will be committed)

	newfile

nothing added to commit but untracked files present (use "git add" to track)
mweeks@air:MCTS_game$ cat > newfile2
this is another new file.
mweeks@air:MCTS_game$ git status
On branch master
Your branch is up to date with 'origin/master'.

Untracked files:
  (use "git add <file>..." to include in what will be committed)

	newfile
	newfile2

nothing added to commit but untracked files present (use "git add" to track)
mweeks@air:MCTS_game$ git status | awk '{ print "git add "$1 }'
git add On
git add Your
git add 
git add Untracked
git add (use
git add 
git add newfile
git add newfile2
git add 
git add nothing
mweeks@air:MCTS_game$ git add newfile
mweeks@air:MCTS_game$ git add newfile2
mweeks@air:MCTS_game$ cd ~/Desktop/csc3320/programs/
mweeks@air:programs$ cd unix_ch4
mweeks@air:unix_ch4$ ls
here_doc.txt	script2.csh	script3.csh	shells_log.txt	tok_example
mweeks@air:unix_ch4$ cat here_doc.txt
cascade:Desktop> sed 's/^/Begin /' < test << EOF
heredoc> one two
heredoc> 
heredoc> EOF
Begin apple orange
Begin grape cherry
Begin EOF
Begin one two
Begin 
cascade:Desktop> vi test2
cascade:Desktop>   
cascade:Desktop> 
cascade:Desktop> vi test2
cascade:Desktop> chmod 700 test2
cascade:Desktop> ./test2
Begin apple orange
Begin grape cherry
cascade:Desktop> cat test
apple orange
grape cherry
EOF

mweeks@air:unix_ch4$ 
mweeks@air:unix_ch4$ # sed 's/^/Begin /' 
mweeks@air:unix_ch4$ cat > test
apple orange
grape cherry
mweeks@air:unix_ch4$ sed 's/^/Begin /' < test
Begin apple orange
Begin grape cherry
mweeks@air:unix_ch4$ sed 's/$/ End/' < test
apple orange End
grape cherry End
mweeks@air:unix_ch4$ sed 's/a/A/' < test
Apple orange
grApe cherry
mweeks@air:unix_ch4$ sed 's/a/A/g' < test
Apple orAnge
grApe cherry
mweeks@air:unix_ch4$ sed 's/r/R/g' < test
apple oRange
gRape cheRRy
mweeks@air:unix_ch4$ sed 's/r/ARRR/g' < test
apple oARRRange
gARRRape cheARRRARRRy
mweeks@air:unix_ch4$ echo regular expressions
regular expressions
mweeks@air:unix_ch4$ echo $SHELL
/bin/bash
mweeks@air:unix_ch4$ who
mweeks   console  Sep 26 22:02 
mweeks   ttys000  Oct  2 12:01 
mweeks   ttys001  Oct 23 14:13 
mweeks   ttys002  Oct  8 13:02 
mweeks   ttys003  Oct  2 11:18 
mweeks   ttys005  Oct 30 10:08 
mweeks@air:unix_ch4$ w
13:22  up 40 days, 17:01, 6 users, load averages: 1.42 1.33 1.32
USER     TTY      FROM              LOGIN@  IDLE WHAT
mweeks   console  -                26Sep24 40days -
mweeks   s000     -                02Oct24 6days -bash
mweeks   s001     -                23Oct24     - script Nov6_2024.log
mweeks   s002     -                08Oct24 1day  -bash
mweeks   s003     -                02Oct24    36 -bash
mweeks   s005     -                30Oct24 1day  -bash
mweeks@air:unix_ch4$ (date; ls; pwd) > out.txt
mweeks@air:unix_ch4$ cat out.txt 
Wednesday November 06, 2024, 01:23 PM
here_doc.txt
out.txt
script2.csh
script3.csh
shells_log.txt
test
tok_example
/Users/mweeks/Desktop/csc3320/programs/unix_ch4
mweeks@air:unix_ch4$ echo $USER
mweeks
mweeks@air:unix_ch4$ whoami
mweeks
mweeks@air:unix_ch4$ echo $MAIL

mweeks@air:unix_ch4$ x="abcdefg"
mweeks@air:unix_ch4$ echo $x
abcdefg
mweeks@air:unix_ch4$ echo $$
22193
mweeks@air:unix_ch4$ # process id of shell
mweeks@air:unix_ch4$ ls
here_doc.txt	script2.csh	shells_log.txt	tok_example
out.txt		script3.csh	test
mweeks@air:unix_ch4$ cat script2.csh 
#!/bin/csh
echo the name of this file is $0
echo the first argument is $1
echo the list of all arguments is $*
echo this script places the date into a temporary file called $1.$$
date > $1.$$
ls -l $1.$$
rm $1.$$mweeks@air:unix_ch4$ ./script2.csh a b c
the name of this file is ./script2.csh
the first argument is a
the list of all arguments is a b c
this script places the date into a temporary file called a.23844
-rw-r--r--  1 mweeks  staff  29 Nov  6 13:28 a.23844
mweeks@air:unix_ch4$ ls -l a.23844
ls: a.23844: No such file or directory
mweeks@air:unix_ch4$ echo there is a /tmp dir
there is a /tmp dir
mweeks@air:unix_ch4$ (sleep 30; echo done 1) &
[1] 23903
mweeks@air:unix_ch4$ (sleep 30; echo done 2) &
[2] 23905
mweeks@air:unix_ch4$ echo done 3; wait; echo done 4
done 3
done 1
[1]-  Done                    ( sleep 30; echo done 1 )
done 2
[2]+  Done                    ( sleep 30; echo done 2 )
done 4
mweeks@air:unix_ch4$ man kill
mweeks@air:unix_ch4$ cd ..
mweeks@air:programs$ find . -name "[Cc]ontr*"
./unix_ch14/controlC2.c
./unix_ch14/controlC.c
./unix_ch14/controlC4.c
./unix_ch14/controlC3.c
mweeks@air:programs$ cat unix_ch14/controlC.c
/*
   This example is from James Wilson's book "Berkeley Unix: A
   Simple and Comprehensive Guide", John Wiley & Sons, Inc., 
   New York, 1991, page 171.

   It sets up a function called "confirm()" that is executed
   whenever the user presses control-C, allowing this program
   to handle control-C interrupts.

   I had to make a few changes to get it to compile, such as
   changing "int confirm()" to "void confirm()".   
     -MCW,  Spring 2008

   compile with:
     gcc controlC.c -o controlC
     /skiff/local/bin/arm-linux-gcc controlC.c -o controlC_iPAQ
*/
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>   /* needed for "exit" call */
#include <unistd.h>    // for fork, sleep

void confirm() {
  char yes_or_no;
  char carriage_return;

  printf("\nDo you really want to exit? (Y/N)");
  scanf("%c%c", &yes_or_no, &carriage_return);
  printf("%c\n", yes_or_no);
  if ((yes_or_no == 'y') || (yes_or_no == 'Y')) {
    exit(0);
  }
}

int main() {
  int i;
 
  /* Set up "confirm" as the function to call on ctrl-C */
  signal(SIGINT, confirm);

  for (i=1; i<=20; i++) {
    printf("Going through loop number %d\n", i);
    sleep(1);
  }
}

mweeks@air:programs$ 
mweeks@air:programs$ cd unix_ch14
mweeks@air:unix_ch14$ gcc controlC.c -o controlC
mweeks@air:unix_ch14$ ./controlC 
Going through loop number 1
Going through loop number 2
Going through loop number 3
Going through loop number 4
Going through loop number 5
^C
Do you really want to exit? (Y/N)y
y
mweeks@air:unix_ch14$ exit
exit

Script done on Wed Nov  6 13:45:04 2024