I know what causes 'broken pipe' errors, but I can't understand why I can get it (only occasionally) with my example:
Basically I'm searching the ps output looking for the process I'm interested in and excluding the process that is grepping for the answer.
Actually I'm doing all this inside a perl one liner shown below:
Very infrequently it fails, but of course I need it to 'never' fail!
If the cause is 'a process writing into a closed pipe', it can happen in two places, but I can't fathom why either the 2nd grep would close the pipe on the first one, or that the first grep would close the pipe on the 'ps'.
I would expect the ps to send and EOF and close the pipe on the first grep who would in turn close the pipe on the second grep.
Hi there,
I try to use:
> find * | ls
but it just gave me one level of ' ls '. and it said:
> find * | ls
dir1 dir2 f1 f2 f3
Broken Pipe
>
what is broken pipe?
how can i fix it?
thks
Gusla (3 Replies)
sometimes I ftp files from an Unix environment from the command prompt of my win2000 pc and I get a "broken pipe" message. sometimes I'll get nothing but sometimes I'll get part of the file.
Whats this "broken pipe" about?? (3 Replies)
Hi
I tried to open the man page of sh and piped to `pg`. Normally while reading a file page by page using `pg`, if we wanna quit at the middle of file, we give "q" near the colon mode.
Ex1: $cat file1 | pg
hi
how
r
u
: (page1) now press "return key", it will go to next page
yes
i ... (1 Reply)
Hi
I tried to open the man page of sh and piped to `pg`. Normally while reading a file page by page using `pg`, if we wanna quit at the middle of file, we give "q" near the colon mode.
Ex1: $cat file1 | pg
hi
how
r
u
: (page1) now press "return key", it will go to next page
yes
i ... (3 Replies)
hi
i have a server, and i have a web site and i installed apache in the /usr/local/apache/logs
i have a file and i have this problem
(32)Broken pipe: core_output_filter: writing data to the network
plz help me how i can resolve this
plz it's urgent
th (2 Replies)
hi
i have a server, and i have a web site and i installed apache in the /usr/local/apache/logs
i have a file and i have this problem
(32)Broken pipe: core_output_filter: writing data to the network
plz help me how i can resolve this
plz it's urgent
th (1 Reply)
hi
i am trying to upload a file using ftp protocol,
i am facing some problem while uploading
"Failedtoupload:SFTREGUP1:FTP_ASCII_MAILBOX21.39.10.856305000:Broken pipe"
Can someone explain why it is coming , and the solution . (0 Replies)
I'm new to scripting, and this forum has been invaluable in helping me out. I'm hoping I can get some personal help now though.
I have a korn script that takes a list of servers and either telnets or sshs into it (only some are set up for ssh). What I'm doing now is trying to telnet first, and... (10 Replies)
Hi all,
I am trying to run a sleep command and I am receiving a broken pipe when I execute. any help would be greatly appreciated.
sleep `< /dev/urandom tr -dc 0-6 | head -c2` (2 Replies)
Discussion started by: gartie
2 Replies
LEARN ABOUT DEBIAN
togeomview
TOGEOMVIEW(1gv)TOGEOMVIEW(1gv)NAME
togeomview - send commands or OOGL objects to geomview
SYNOPSIS
togeomview [-c] [-g] [pipename [program args ...]]
DESCRIPTION
togeomview sends a stream of geomview commands, or OOGL-format geometric data, to a cooperating copy of geomview. If geomview is not run-
ning, it is automatically started. ('geomview' must be on the $PATH of the user running 'togeomview' in order for this to work.)
Typical usage is:
someprogram | togeomview (to send commands) or
someprogram-generating-OOGL-data | togeomview -g (to send geometry)
i.e. a program pipes geometric data into ``togeomview''; the data is displayed by a copy of geomview run with the -M option and a name
matching the one given to togeomview.
Togeomview uses a named pipe in the directory /tmp/geomview to communicate with geomview. If unspecified, the pipe's default name is
"OOGL". When sending geometry (-g), a geomview object with the same name as the pipe appears in geomview's object browser.
By default, when no suitable copy of geomview is running, togeomview invokes "geomview" with arguments specifying the appropriate named
pipe. A different command may be specified as in:
togeomview OOGL gv -wpos 300x300 -c my_startup_script
which communicates through a pipe named OOGL, and (if necessary) invokes the given gv command. The pipe name is required if a command is
specified.
After togeomview has created it, the named pipe may be written as an ordinary file. For example, one could use
togeomview pipename < /dev/null
to invoke a listening copy of geomview, and then run a program which simply wrote to /tmp/geomview/pipename.
FILES
/tmp/geomview
BUGS
The pipe-based communications scheme imposes several restrictions.
If no copy of geomview is reading from the pipe, or if geomview gets far enough behind, a program writing data to ``togeomview'' will be
forced to block after sending a few kilobytes.
Because of the buffering in the pipe, the sender may be substantially ahead of the geomview display.
If geomview exits, the sending program receives a write-on-broken-pipe (SIGPIPE) signal, which will kill it unless measures are taken to
catch or ignore that signal.
Only one copy of geomview can read from a given pipe at a time. If a second copy attempts to read from it, both will probably fail. It's
fine to have multiple copies of geomview reading from different pipes.
Note that togeomview will invoke geomview if no extant copy is listening to the relevant pipe; it can't connect to an existing copy of
geomview started by other means.
SEE ALSO geomview(1), oogl(5)Geometry Center 21 May 1993 TOGEOMVIEW(1gv)