01-02-2008
Just replied to a wrong thread.
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi, experts.
Whould anybody clear explay me difference and usage of these 3 commands (particulary in bash) :
exec
eval
source
I've tryed to read the manual pages but did not get much.
Also could not get something useful from Google search - just so much and so not exactly, that is... (3 Replies)
Discussion started by: alex_5161
3 Replies
2. Shell Programming and Scripting
Hi All,
I'm running some encrypted data through a script I wrote. In order to do this, I'm using eval to resolve some of my variables. At the moment, when I use eval to resolve, it strips out some of my encrypted values, and totally drops some others. For example if I have the value ab1"3 it drops... (1 Reply)
Discussion started by: Khoomfire
1 Replies
3. Shell Programming and Scripting
I am trying to expand the variable $user in my alias command and tried
several variations of eval but can't seem to get it to work.
The end result should be either:
oracle_user='sudo su - oracle ' or oracle_user='sudo su - oracle1 '
user=$(grep '^oracle:' /etc/passwd | cut... (5 Replies)
Discussion started by: BeefStu
5 Replies
4. Shell Programming and Scripting
Hi all,
some small script with eval turned me to crazy.
my OS is linux
Linux s10-1310 2.6.16.53-0.8.PTF.434477.3.TDC.0-smp #1 SMP Fri Aug 31 06:07:27 PDT 2007 x86_64 x86_64 x86_64 GNU/Linux
below script works well
#!/bin/bash
eval ssh remotehost date
eval ssh remotehost ls
below... (1 Reply)
Discussion started by: summer_cherry
1 Replies
5. Shell Programming and Scripting
Hello All,
Since my variables are nested I use eval to populate the data.
I have an ambiguity here when eval is used along with &
say I have the below variable
url="www.unix.com" , this come from function call as argument.
I want to take this into another variable say... (6 Replies)
Discussion started by: sathyaonnuix
6 Replies
6. Shell Programming and Scripting
anyone has any info on why this is complaining???
vivek@vivek-c5e55ef2e ~/TAC
$ zoneCounter=1
vivek@vivek-c5e55ef2e ~/TAC
$ optUsage1=23%
vivek@vivek-c5e55ef2e ~/TAC
$ eval eval echo "<th>Zone $zoneCounter </th><th align=\"left\"> \$optUsage$zoneCounter </th>"
-bash: syntax error... (1 Reply)
Discussion started by: vivek d r
1 Replies
7. Shell Programming and Scripting
anyone has any info on why this is complaining???
vivek@vivek-c5e55ef2e ~/TAC
$ zoneCounter=1
vivek@vivek-c5e55ef2e ~/TAC
$ optUsage1=23%
vivek@vivek-c5e55ef2e ~/TAC
$ eval eval echo "<th>Zone $zoneCounter </th><th align=\"left\"> \$optUsage$zoneCounter </th>"
-bash: syntax error... (13 Replies)
Discussion started by: vivek d r
13 Replies
8. Shell Programming and Scripting
Hi,
I am running this on Redhat 5.10
I have a simple test script called test.sh which has the following
contents and it uses the BASH shebang.
-------------------------------------------------------------
#!/bin/bash
eval `/tmp/filereader.pl /tmp/envfile.txt`
echo "TESTPATH=$TESTPATH"
... (28 Replies)
Discussion started by: waavman
28 Replies
9. UNIX for Beginners Questions & Answers
Hi Guys,
I wrote a collection of bash functions years ago and now need to use them again but
I'm getting some error messages when eval tries to expand the variables names.
I recollect that I used the shopt command to set one of the options but I can't quite
remember the command that I... (8 Replies)
Discussion started by: ASGR
8 Replies
TKILL(2) Linux Programmer's Manual TKILL(2)
NAME
tkill, tgkill - send a signal to a thread
SYNOPSIS
int tkill(int tid, int sig);
int tgkill(int tgid, int tid, int sig);
Note: There are no glibc wrappers for these system calls; see NOTES.
DESCRIPTION
tgkill() sends the signal sig to the thread with the thread ID tid in the thread group tgid. (By contrast, kill(2) can only be used to
send a signal to a process (i.e., thread group) as a whole, and the signal will be delivered to an arbitrary thread within that process.)
tkill() is an obsolete predecessor to tgkill(). It only allows the target thread ID to be specified, which may result in the wrong thread
being signaled if a thread terminates and its thread ID is recycled. Avoid using this system call.
If tgid is specified as -1, tgkill() is equivalent to tkill().
These are the raw system call interfaces, meant for internal thread library use.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EINVAL An invalid thread ID, thread group ID, or signal was specified.
EPERM Permission denied. For the required permissions, see kill(2).
ESRCH No process with the specified thread ID (and thread group ID) exists.
VERSIONS
tkill() is supported since Linux 2.4.19 / 2.5.4. tgkill() was added in Linux 2.5.75.
CONFORMING TO
tkill() and tgkill() are Linux-specific and should not be used in programs that are intended to be portable.
NOTES
See the description of CLONE_THREAD in clone(2) for an explanation of thread groups.
Glibc does not provide wrappers for these system calls; call them using syscall(2).
SEE ALSO
clone(2), gettid(2), kill(2), rt_sigqueueinfo(2)
COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2012-07-13 TKILL(2)