9 More Discussions You Might Find Interesting
1. Homework & Coursework Questions
Good evening, I'm trying to do my own shell and I encountered some issues while creating it. Indeed when I try such a command I have
DAUPHINE> DAUPHINE> ls -l | grep terminal > fichier
DAUPHINE> cat fichier
My shell is named DAUPHINE
Whereas I should have:
Code:
... (0 Replies)
Discussion started by: AntoineCompagni
0 Replies
2. Shell Programming and Scripting
Hi,
I am learning shell scripting for the first time. I use AT&T Korn Shell, Version AJM 93u+ 2012-08-01, compiled from source on NetBSD.
So far I have managed to set up what I think is a useful and pleasing shell prompt, which can be seen in the image attached to this post.
The prompt is... (2 Replies)
Discussion started by: gezley
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3. AIX
Dear all experts,
I have a script written to compress a list of files, during compressing, some of the files are having same name. When the compressing started, the same name file will be prompted with message whether to overwrite the old file. I need to enter "y" to continue.
Is there any way I... (7 Replies)
Discussion started by: kwliew999
7 Replies
4. Shell Programming and Scripting
Hi,
I want to change the shell prompt, using the cd command.
I have a shell prompt like this -
p78-mfx(dgaw1078/9781)$
Now i do this -
p78-mfx(dgaw1078/9781)$ cd log4j
here the shell prompt should change like this -
p78-mfx(dgaw1078/9781)log4j$ (6 Replies)
Discussion started by: arunkumarmc
6 Replies
5. Shell Programming and Scripting
I'm new to working with pipes, so I don't know whether the following is expected behaviour or a bug on the part of an application.
Since Version 0.47, Inkscape provides a non-GUI interactive shell mode of operation. I am trying to time the program's performance in converting SVG files to PNG... (1 Reply)
Discussion started by: ccprog
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6. UNIX for Advanced & Expert Users
Hi,
I saw something in weird in Shell prompt.
I did the following steps
1) Typed ls -l and pressed ESC without entering
2) Typed "v" (please notice that I did not type "i" after "v"), which opened vi editor
3) I see the "ls -l" command that I typed in shell prompt
4) Without modifying... (6 Replies)
Discussion started by: bobbygsk
6 Replies
7. UNIX for Dummies Questions & Answers
currently, I set my prompt in my .cshrc file as:
set prompt = "%B%h %m %P %/ \n% "
I have to use certain shells for some specific tasks and would like to set different prompts depending on the type of shell that I am using. Any advice?
Thanks (3 Replies)
Discussion started by: dranNfly
3 Replies
8. UNIX for Dummies Questions & Answers
Hi, I´m using SCO Unix 5.0.5 and I want to configure de variable PS1, so when I type the command:
cd /etc/
the prompt shows
/etc/_>
Is that possible with sh shell? I´ll appreciate your help.
Thanks, a Happy New Year! (1 Reply)
Discussion started by: diegoe
1 Replies
9. UNIX for Dummies Questions & Answers
When I login to a specific machine (running Solaris 2.8; actually serveral machines behave this way), with a known good account, I don't get any shell prompt, and no screen responses to various commands such as ID and PWD. Any ideas on what is causing this, and how to change this behavior? (2 Replies)
Discussion started by: Mufasa
2 Replies
PIPE(2) System Calls Manual PIPE(2)
NAME
pipe - create an interprocess channel
SYNOPSIS
#include <u.h>
#include <libc.h>
int pipe(int fd[2])
DESCRIPTION
Pipe creates a buffered channel for interprocess I/O communication. Two file descriptors are returned in fd. Data written to fd[1] is
available for reading from fd[0] and data written to fd[0] is available for reading from fd[1].
After the pipe has been established, cooperating processes created by subsequent fork(2) calls may pass data through the pipe with read and
write calls. The bytes placed on a pipe by one write are contiguous even if many processes are writing. Write boundaries are preserved:
each read terminates when the read buffer is full or after reading the last byte of a write, whichever comes first.
The number of bytes available to a read(2) is reported in the Length field returned by fstat or dirfstat on a pipe (see stat(2)).
When all the data has been read from a pipe and the writer has closed the pipe or exited,
read(2) will return 0 bytes. Writes to a pipe with no reader will generate a note sys: write on closed pipe.
SOURCE
/sys/src/libc/9syscall
SEE ALSO
intro(2), read(2), pipe(3)
DIAGNOSTICS
Sets errstr.
BUGS
If a read or a write of a pipe is interrupted, some unknown number of bytes may have been transferred.
When a read from a pipe returns 0 bytes, it usually means end of file but is indistinguishable from reading the result of an explicit write
of zero bytes.
PIPE(2)