Blowtorch, try piping it to 'cat' or echo $(a.out).
I get the same results.
It stumped me for awhile, but I believe I know why this is happening. The fork() call is copying everything in memory to a child process, including the output buffer. Since the output buffer wasn't flushed before the fork, there was a '0' character in the buffer, and that was also copied. Try flushing the buffer before the fork(). It worked for me.
This is weird, so I'm hoping someone here knows solaris and how it handles pipes...
OK... here goes...
Theres this log file, right? I want to tail -f it, grep that, gzip that, then pipe that into more commands. Well thats easy, right?
tail -f file | grep pattern | gzip | otherstuff...
... (1 Reply)
Hey guys,
I'm given this bit of code, but, I'm having some problems executing it with the functions I've defined so far. I'm suppose to define the funtions "parse" and "execute." Parse splits the command in buf into individual arguments. It strips whitespace, replacing those it finds with NULLS... (3 Replies)
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)
Hi, so I've got this program("main") that fork executes another ("user"). These programs communicate through fifos.
One communication is a spawn call, where user passes an executable, main forks and executes it. So, I'm keeping track of all my processes using a task table. After the fork (for... (6 Replies)
Hello *NIX gurus,
I have a slight perplexing problem with multiple forks giving different results... Here is the deal.
From what I undestand, a fork() call starts executing from the next instruction that follows the fork() call. That means it inherits the PC counter register value of the... (4 Replies)
i'm tring to make 2 processes each read from the same file but only one of them read the file.
FILE * fileptr1;
fileptr1 = fopen("file1.txt","rt");
pid2=fork();
while(1)
{
fscanf(fileptr1,"%s",temp1);
if(feof(fileptr1)==0)
{
printf("%i",getpid()); //id of current process ... (6 Replies)
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)
all,
i've been reading to try and get an abstract idea of the process effeciency of commands , sed, bash, perl, awk, find, grep, etc
which processes will spawn?, fork?, launch subshell?, etc and under what conditions?
how do you know which commands have the faster and better stdio... (2 Replies)
Discussion started by: f77hack
2 Replies
LEARN ABOUT MOJAVE
git-shell
GIT-SHELL(1) Git Manual GIT-SHELL(1)NAME
git-shell - Restricted login shell for Git-only SSH access
SYNOPSIS
chsh -s $(command -v git-shell) <user>
git clone <user>@localhost:/path/to/repo.git
ssh <user>@localhost
DESCRIPTION
This is a login shell for SSH accounts to provide restricted Git access. It permits execution only of server-side Git commands implementing
the pull/push functionality, plus custom commands present in a subdirectory named git-shell-commands in the user's home directory.
COMMANDS
git shell accepts the following commands after the -c option:
git receive-pack <argument>, git upload-pack <argument>, git upload-archive <argument>
Call the corresponding server-side command to support the client's git push, git fetch, or git archive --remote request.
cvs server
Imitate a CVS server. See git-cvsserver(1).
If a ~/git-shell-commands directory is present, git shell will also handle other, custom commands by running "git-shell-commands/<command>
<arguments>" from the user's home directory.
INTERACTIVE USE
By default, the commands above can be executed only with the -c option; the shell is not interactive.
If a ~/git-shell-commands directory is present, git shell can also be run interactively (with no arguments). If a help command is present
in the git-shell-commands directory, it is run to provide the user with an overview of allowed actions. Then a "git> " prompt is presented
at which one can enter any of the commands from the git-shell-commands directory, or exit to close the connection.
Generally this mode is used as an administrative interface to allow users to list repositories they have access to, create, delete, or
rename repositories, or change repository descriptions and permissions.
If a no-interactive-login command exists, then it is run and the interactive shell is aborted.
EXAMPLE
To disable interactive logins, displaying a greeting instead:
$ chsh -s /usr/bin/git-shell
$ mkdir $HOME/git-shell-commands
$ cat >$HOME/git-shell-commands/no-interactive-login <<EOF
#!/bin/sh
printf '%s
' "Hi $USER! You've successfully authenticated, but I do not"
printf '%s
' "provide interactive shell access."
exit 128
EOF
$ chmod +x $HOME/git-shell-commands/no-interactive-login
To enable git-cvsserver access (which should generally have the no-interactive-login example above as a prerequisite, as creating the
git-shell-commands directory allows interactive logins):
$ cat >$HOME/git-shell-commands/cvs <<EOF
if ! test $# = 1 && test "$1" = "server"
then
echo >&2 "git-cvsserver only handles "server""
exit 1
fi
exec git cvsserver server
EOF
$ chmod +x $HOME/git-shell-commands/cvs
SEE ALSO ssh(1), git-daemon(1), contrib/git-shell-commands/README
GIT
Part of the git(1) suite
Git 2.17.1 10/05/2018 GIT-SHELL(1)