10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have a script that looks like this:sed -f myfile.sed $1 > $1.out called myscript and would like to change it so the parameter isn't necessary: ls *.idx | myscript | xargs some_command What do I need to add so it can run either way?
TIA
---------- Post updated at 09:41 AM ----------... (1 Reply)
Discussion started by: wbport
1 Replies
2. Shell Programming and Scripting
on linux systems, i can do something like this:
$ JIOO=hello.one.two
$
$ awk -F"." '{print $2}' <<< "${JIOO}"
however, on older systems or other unix systems that dont have the fancy stuff this does not work.
i contemplated using "-v var="${JIOO}" but i dont think that works.
any... (7 Replies)
Discussion started by: SkySmart
7 Replies
3. Shell Programming and Scripting
Hi
This is my third past and very impressed with previous post replies
Hoping the same for below query
How to find a existing file location and directory location in solaris box (1 Reply)
Discussion started by: buzzme
1 Replies
4. Shell Programming and Scripting
I have file file1.txt in location 'loc1'. Now i want a copy of this file in location 'loc2' with a new file called test.txt.
Please help me how to do this in shell script. (1 Reply)
Discussion started by: vel4ever
1 Replies
5. Shell Programming and Scripting
Hi,
I am logging to a linux server through a user "user1" in /home directory.
There is a script in a directory in 'root' for which all permissions are available including the directory. This script when executed creates a file in the directory.
When the script is added to crontab, on... (1 Reply)
Discussion started by: archana.n
1 Replies
6. Shell Programming and Scripting
Hi
Im trying to do the following:
grep -H Date: out/* | sed 's/':'/ /' | awk '$4 ~ /^/ {print $1}' | while read VARIABLE; do
awk '{print $1,$3,$2}' $VARIABLE | sed (take stdin and replace a string in $VARIABLE)
done
What this is basically doing is finding all files with Date: in... (11 Replies)
Discussion started by: duonut
11 Replies
7. Programming
Hello everybody,
Having a file with the following content:
192.168.0.254->192.168.0.1
192.168.0.2->192.168.0.34
192.168.0.56->192.168.0.77
I need to code a program in C to read it from stdin redirection (i.e. root@box~# ./a.out < file), my question is, how can i do that?
I've tried with... (2 Replies)
Discussion started by: semash!
2 Replies
8. Shell Programming and Scripting
Hi Everyone,
I have 1.txt
here
a
b
c' funny"yes";
d
e
The finally output is:
here
a
b
c
d
e' funny"yes"; (1 Reply)
Discussion started by: jimmy_y
1 Replies
9. AIX
Hi all,
I want to know the device filename of STDIN in AIX.
On other platforms(Linux and solaris), the device file for stdin is available at /dev/ directory as "/dev/stdin".
But i didn't find any filename for STDIN at /dev/ directory in AIX.
Please let me know the name and location of device... (3 Replies)
Discussion started by: erra_krishna
3 Replies
10. Programming
Hi
I am doing file redirection at console for use by my binary.
%console%> bin < inputfile
After reading in the entire file, I want my program to continue taking input from the console. So essentially I want to redirect stdin back to console. But I cant figure out how to do it.
I am... (4 Replies)
Discussion started by: nauman
4 Replies
FD(4) BSD Kernel Interfaces Manual FD(4)
NAME
fd, stdin, stdout, stderr -- file descriptor files
DESCRIPTION
The files /dev/fd/0 through /dev/fd/# refer to file descriptors which can be accessed through the file system. If the file descriptor is
open and the mode the file is being opened with is a subset of the mode of the existing descriptor, the call:
fd = open("/dev/fd/0", mode);
and the call:
fd = fcntl(0, F_DUPFD, 0);
are equivalent.
Opening the files /dev/stdin, /dev/stdout and /dev/stderr is equivalent to the following calls:
fd = fcntl(STDIN_FILENO, F_DUPFD, 0);
fd = fcntl(STDOUT_FILENO, F_DUPFD, 0);
fd = fcntl(STDERR_FILENO, F_DUPFD, 0);
Flags to the open(2) call other than O_RDONLY, O_WRONLY and O_RDWR are ignored.
IMPLEMENTATION NOTES
By default, /dev/fd is provided by devfs(5), which provides nodes for the first three file descriptors. Some sites may require nodes for
additional file descriptors; these can be made available by mounting fdescfs(5) on /dev/fd.
FILES
/dev/fd/#
/dev/stdin
/dev/stdout
/dev/stderr
SEE ALSO
tty(4), devfs(5), fdescfs(5)
BSD
June 9, 1993 BSD
