The command ps -eaf gives inconsistent result when executed on XYZ server (the command shows 1, 2 or 3 instances of the process. Ideally it should show only 1). I have attached the script file that was executed and the corresponding output. When the same script was executed on ABC server it gave the desired result.
XYZ : Is a VM instance running Linux (Red Hat Enterprise Linux Server release 5.5 (Tikanga)) ABC : Physical server running Linux (Red Hat Enterprise Linux AS release 4 (Nahant Update 7))
I would like to know that XYZ being a VM instance are there any environmental settings or issues which might result in such a behavior? Any inputs on this are appreciated.
Hi
I am using HP - UX...
When I execute the below commands I get these results...
Why do i get a different shell value when i run echo $SHELL?
# echo $0
ksh
# echo $SHELL
sh
# ps -p$$
PID TTY TIME COMMAND
4013 pts/7 0:00 ksh (2 Replies)
I am using a piece of code which is working fine in some cases and is not working in some other instances. All I am doing is grep'ing and concatenating.
Below is a working scenario.
$ echo $var1
REPLYFILENAME=Options_NSE1.txt.enc
$ FILE_NM=`echo ${var1##*=}`.gz (Take everything after... (1 Reply)
Hi
I'm executing a menu script in which I `cat a file` but it's giving different output some times. Following is the code fragment taken from my script.
while true
do
cat procs.configured
echo ---------separator--------------
sleep 3
done
when I execute this code fragment, `cat` outputs... (2 Replies)
I have an input list of:
I am just trying to turn this list into its seconds since epoch "+%s" time equivalent. I'm trying to use the following, but every time I run the command it gives me different answers, they are close, but never the same... any clues as to why?
xargs -I{} date -j -f... (3 Replies)
Hi,
I have a file that has inconsistently numbered columns.
Like row1 has 23 columns, and row 2 has 34 columns etc.
I would like to re-order the first 8 columns as required and from the 9th column till the end, I would like to print it as it is.
I tried to read the re-ordered 8 columns... (7 Replies)
i have this line of code that looks for the same file if it is currently running and returns the count.
`ps -eaf -o args | grep -i sfs_pcard_load_file.ksh | grep -v grep | wc -l`
basically it is assigned to a variable
ISRUNNING=`ps -eaf -o args | grep -i sfs_pcard_load_file.ksh |... (6 Replies)
Hi Experts,
I have an issue with performance of oracle, the db sits on EBS volumes on and aws EC2 instance. I have captured the iostat data and feed it to iostat_plotter to forward it to the DB administrators. However what I'm trying to understand is the variable avgrq-sz, it is quite in... (0 Replies)
Hi Gurus,
I have requirement to compare current result with previous reuslt.
The sample case is below.
1 job1 1
1 job2 2
1 job3 3
2 job_a1 1
2 job_a2 2
2 job_a3 3
3 job_b1 1
3 job_b2 2
for above sample file, GID is group ID, for input line, the job run... (1 Reply)
On one of the Unix server B.11.31. a disk that has been provisioned from the VMAX, but according to the diskinfo its show coming from clarion.
sudo /opt/emc/SYMCLI/bin/symvg sho /dev/vg_<name>
Volume Group Name : /dev/vg_<name>
Volume Group Type : HP-UX LVM
Volume Group State ... (0 Replies)
Could you please advise on the following: I have two space-delimited files with 9 and 10 columns, respectively, with exactly the same values in column 1. However, the order of column 1 differs between the two files, so I want to sort both files by column 1, so that I can align them and... (6 Replies)
Discussion started by: aberg
6 Replies
LEARN ABOUT SUNOS
exec
exec(1) User Commands exec(1)NAME
exec, eval, source - shell built-in functions to execute other commands
SYNOPSIS
sh
exec [argument...]
eval [argument...]
csh
exec command
eval argument...
source [-h] name
ksh
*exec [arg...]
*eval [arg...]
DESCRIPTION
sh
The exec command specified by the arguments is executed in place of this shell without creating a new process. Input/output arguments may
appear and, if no other arguments are given, cause the shell input/output to be modified.
The arguments to the eval built-in are read as input to the shell and the resulting command(s) executed.
csh
exec executes command in place of the current shell, which terminates.
eval reads its arguments as input to the shell and executes the resulting command(s). This is usually used to execute commands generated as
the result of command or variable substitution.
source reads commands from name. source commands may be nested, but if they are nested too deeply the shell may run out of file descrip-
tors. An error in a sourced file at any level terminates all nested source commands.
-h Place commands from the file name on the history list without executing them.
ksh
With the exec built-in, if arg is given, the command specified by the arguments is executed in place of this shell without creating a new
process. Input/output arguments may appear and affect the current process. If no arguments are given the effect of this command is to mod-
ify file descriptors as prescribed by the input/output redirection list. In this case, any file descriptor numbers greater than 2 that are
opened with this mechanism are closed when invoking another program.
The arguments to eval are read as input to the shell and the resulting command(s) executed.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
EXIT STATUS
For ksh:
If command is not found, the exit status is 127. If command is found, but is not an executable utility, the exit status is 126. If a redi-
rection error occurs, the shell exits with a value in the range 1-125. Otherwise, exec returns a zero exit status.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), ksh(1), sh(1), attributes(5)SunOS 5.10 17 Jul 2002 exec(1)