10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Suppose another person wrote the following one-line shell script:
echo $RANDOM > /dev/tty
QUESTION #1: How can the random number, which is output to the terminal by this script, be captured in a variable?
QUESTION #2: How can this be done in a cron job?
Specific code, whether in ksh or... (1 Reply)
Discussion started by: Paul R
1 Replies
2. Red Hat
I ran the following command.
cat abc.c > abc.c
I got message the following message from command cat:
cat: abc.c : input file is same as the output file
How the command came to know of the destination file name as the command is sending output to standard file. (3 Replies)
Discussion started by: ravisingh
3 Replies
3. Shell Programming and Scripting
Hi all,
First time post, so please be gentle. :)
I'm writing a Solaris 10 ksh script to retrieve details of logins and logouts using specific user names. The details I want are quite basic - the username, the computer logged in from, and the date and time the user logged in and logged off.... (6 Replies)
Discussion started by: confusedAdmin
6 Replies
4. UNIX for Dummies Questions & Answers
After running nm command on any object file from out put can we get to know that wheather a symbol is a call to a function or definition of function ?
I am searching a class and function definitions inside many .so files.
I have 3 files which contain the symbol but I don't know wheather they... (2 Replies)
Discussion started by: yatrik007
2 Replies
5. Shell Programming and Scripting
ok, so I have a script im running on a linux box that uses "egrep" a lot. now, when i run this script, i check the TOP to see how much system resource it is using.
the "top" command gives the following output:
last pid: 25384; load avg: 1.06, 1.04, 0.76; up 351+06:30:24 ... (0 Replies)
Discussion started by: SkySmart
0 Replies
6. UNIX for Advanced & Expert Users
/dev/zero can output 0's (null characters) endlessly. I am looking for a technique to output 1's (0xFF or 0b11111111) endlessly in a similar manner as /dev/zero.
The following dd statement writes 4 terabytes of 0's to the drive /dev/sdb. This dd statement does not cause any memory shortage.
... (3 Replies)
Discussion started by: LessNux
3 Replies
7. UNIX for Dummies Questions & Answers
Could you please explain me whats happening in the below code, appreciate your help, Thank you.
/product/apps/informatica/v7/pc/ExtProc/NewDAC/dacRecBuilder.sh
/product/apps/informatica/v7/pc/TgtFiles/NEW_DAC/DAC_Pos_TradeInv_Records.out ... (5 Replies)
Discussion started by: Ariean
5 Replies
8. UNIX for Dummies Questions & Answers
what exactly is going on in this piece of code? what is the role of /dev/fd? i know that /dev/fd/0 is somehow linked to standard input, but that's the extent of my knowledge
cat header.txt /dev/fd/0 footer.txt (2 Replies)
Discussion started by: momo.reina
2 Replies
9. Solaris
Hi, Anyone can help
My solaris 8 system has the following
/dev/null , /dev/tty and /dev/console
All permission are lrwxrwxrwx
Can this be change to a non-world write ??
any impact ?? (12 Replies)
Discussion started by: civic2005
12 Replies
10. UNIX for Dummies Questions & Answers
RH 7.2
My machine has an LCD screen on the front of the panel. I've been given software to control some text on the LCD. The software checks /dev/tts/1 for the LCD. Since I don't have any /dev/tts directory, the developer told me just to make a link from the LCD to /dev/tts/1, but I don't... (4 Replies)
Discussion started by: jalburger
4 Replies