10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hey,
Well, we're starting scripting next week for my class, and I have my command done, but I don't actually understand what the meaning is, so I was just wondering if someone could "translate" this in to words so that I might be able to do this better...
command1 | command2 | command3... (5 Replies)
Discussion started by: sso
5 Replies
2. Programming
If a code forks 2 childs, what can the values be for the process id's of each of the child? I child pid is supposed to be 0, but what if you fork 2 of them? (5 Replies)
Discussion started by: omega666
5 Replies
3. Programming
Hello all, I am trying to learn more about programming Unix pipes in C.
I have created a pipe that does od -bc < myfile | head
Now, I am trying to create od -bc < myfile | head | wc
Here is my code, and I know I might be off, thats why I am here so I can get some clarification.
#include... (1 Reply)
Discussion started by: petrca
1 Replies
4. Shell Programming and Scripting
Would like to use a here document in a shell script with sqlplus and pipe the output to sed (etc.) before ultimately redirecting the lot to a file, e.g:
# sqlplus -S user/pass <<EOF
SELECT *
FROM table
quit
EOF | sed 's///g' > outputfile
Have tried various permutations to no avail. Any... (2 Replies)
Discussion started by: cs03dmj
2 Replies
5. UNIX for Dummies Questions & Answers
hi,
i am working on a script for oracle export, m using a parameter file...
i want to compress the dump file that is generated..
in my script following is the code i have written.
i am not able to generata .gz file
mknod /tmp/exp_tesd1_pipe p
gzip -cNf... (4 Replies)
Discussion started by: saharookiedba
4 Replies
6. Shell Programming and Scripting
I have to add pipes for particualr number of records in a file. For eg the file has 10 records and i need to add the "|" for records numbers 7 to 10 at particular positons as shown.
I need to add pipes in each of these records at positions 9, 11,,21 as like below.
Can some body... (7 Replies)
Discussion started by: dsravan
7 Replies
7. Shell Programming and Scripting
# this works
# creates two.txt
(echo one;echo two;echo three;) | (
( grep two > two.txt )
)
# wamt this to create two files:
# two.txt containing "two" and three.txt containing "three"
# Both files get created, but three.txt is empty
# is there a way to do this?
(echo one;echo two;echo... (3 Replies)
Discussion started by: tphyahoo
3 Replies
8. Programming
Extremely need to understand some aspects of pipes realization. The main question is in which memory are pipes placed? (13 Replies)
Discussion started by: pranki
13 Replies
9. Shell Programming and Scripting
Hi,
Can the cd command be invoked using pipes???
My actual question is slightly different. I am trying to run an executable from different folders and the path of these folders are obtained dynamically from the front end. Is there a way in which i can actually run the executable... (2 Replies)
Discussion started by: Sinbad
2 Replies
10. Filesystems, Disks and Memory
Hello!
How I can increase or decrease predefined pipe buffer size?
System FreeBSD 4.9 and RedHat Linux 9.0
Thanks! (1 Reply)
Discussion started by: Jus
1 Replies