01-23-2012
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
I am triying to make sure that there exists only one file with the pattern abc* in path /path/. This directory is having many huge files. If there is only one file then I have to take its complete name only to use furter in my script.
I am planning to do like this:
if ; then... (2 Replies)
Discussion started by: new_learner
2 Replies
2. UNIX for Dummies Questions & Answers
Hi folks,
Please advise which command/command line shall I run;
1) to display the command and its output on console
2) simultaneous to save the command and its output on a file
I tried tee command as follows;
$ ps aux | grep mysql | tee /path/to/output.txt
It displayed the... (7 Replies)
Discussion started by: satimis
7 Replies
3. UNIX for Advanced & Expert Users
Is there a way to repeat the output of the last command for filtering without running the command again? All I could think of was to copy all the data to a text file and process it that way, is there another way? Like say I want to grep server.server.lan from a dtrace that was pages long after I... (5 Replies)
Discussion started by: glev2005
5 Replies
4. UNIX for Dummies Questions & Answers
Hey, guys!
Trying to research this is such a pain since the read command itself is a common word. Try searching "unix OR linux read command examples" or using the command substitution keyword. :eek:
So, I wanted to use a command statement similar to the following.
This is kinda taken... (2 Replies)
Discussion started by: ProGrammar
2 Replies
5. AIX
Hello,
Script command helps to save command output to file. (Redicection doesn't work in this case).
Besides interactive shell 'recording', Linux script command has "-c" option which allows to record output of some non-interactive command.
The problem is that AIX script command variant... (6 Replies)
Discussion started by: vilius
6 Replies
6. UNIX for Dummies Questions & Answers
HI Guys,
I hope you are well. I am trying to write a script that gets executed every time i open a shell (cshell). I have two questions about that
1) I need to enter these commands
$ echo $DISPLAY
$ setenv $DISPLAY output_of_echo_$display_command
How can i write a... (2 Replies)
Discussion started by: kaaliakahn
2 Replies
7. Shell Programming and Scripting
Hi Experts,
I am very much new to linux scripting, I am currently working on reducing my manual work and hence writing a script to automate few task.
I am running below command to snmpwalk the router..
snmpwalk -v 3 -u WANDL_SU -a MD5 -A vfipmpls -x DES -X VfIpMpLs -l authPriv... (19 Replies)
Discussion started by: Hanumant.madane
19 Replies
8. Red Hat
I ran the following command.
cat abc.c > abc.c
I got message the following message from command cat:
cat: abc.c : input file is same as the output file
How the command came to know of the destination file name as the command is sending output to standard file. (3 Replies)
Discussion started by: ravisingh
3 Replies
9. UNIX for Dummies Questions & Answers
Hi Guys,
I like to output every command executed in the script to a file.
I have tried set -x which does the same.
But it is not giving the logs of the child script which is being called from my script.
Is there any parameters in the Set command or someother way where i can see the log... (2 Replies)
Discussion started by: mac4rfree
2 Replies
10. Shell Programming and Scripting
I am using UNIX to create a script on our system. I have setup my commands to append their output to an outage file. However, some of the commands return no output and so I would like something to take their place.
What I need
The following command is placed at the prompt:
TICLI... (4 Replies)
Discussion started by: jbrass
4 Replies
chroot(1M) chroot(1M)
NAME
chroot - change root directory for a command
SYNOPSIS
newroot command
DESCRIPTION
The command executes command relative to the newroot. The meaning of any initial slashes in path names is changed for command and any of
its children to newroot. Furthermore, the initial working directory is newroot.
Note that command suffixes that affect input or output for the command use the original root, not the new root. For example, the command:
locates file relative to the original root, not the new one.
The command variable includes both the command name and any arguments.
The new root path name is always relative to the current root. Even if a is currently in effect, the newroot argument is relative to the
current root of the running process.
This command is restricted to users with appropriate privileges.
EXTERNAL INFLUENCES
International Code Set Support
Single- and multibyte character code sets are supported.
WARNINGS
command cannot be in a shell script.
Exercise extreme caution when referring to special files in the new root file system.
does not search the environment variable for the location of command, so the absolute path name of command must be given.
When using to establish a new environment, all absolute path name references to the file system are lost, rendering shared libraries inac-
cessible. If continued access to shared libraries is needed for correct operation, the shared libraries and the dynamic loader be copied
into the new root environment.
SEE ALSO
chdir(2), chroot(2).
STANDARDS CONFORMANCE
chroot(1M)