You need to evaluate the "name" variable before you can use it that way,
essentially give the shell a chance to process it as though it was typed in.
eval cd $name
Depending on how much you are doing with name, it might be useful to do this first to avoid a lot of "eval"s.
eval name="$name"
As you are changing directory, be sure that you go back to a known place between "cd" commands
or it may not find the directory that you are looking for.
hi i want to write a shell script to set environment variables . But i am not been able to set that for the current shell instead i have to spawn a new shell. Is there a way to set the env variable for the current shell using shell script in bash shell ?
Thnx (2 Replies)
Hey all,
I have been using Ksh and in that I am setting Environment variables.
To set Env. Variables I have created my own file "BuildScript.sh" in which i have written :
export CLASSPATH=/somedir/some other dir/file:.
export PATH=/some dir/file:.
But when i am calling this... (4 Replies)
Hi,
I am using the HP-UX machine of version B.11.23. My bashprofile looks like this :
# @(#)B11.23_LR
# Default user .profile file (/usr/bin/sh initialization).
#! /usr/bin/bash
# Set up the terminal:
if
then
eval ` tset -s -Q -m ':?hp' `
else
eval ` tset -s -Q `
fi
stty erase "^H"... (0 Replies)
Hi,
I have a script that sets some env variables.
I want to source the script in a new xterm and
after the script execution is over, the xterm has to be alive with the env variables set according to the script.
I tried
xterm -e "source ./myscript;tcsh" &
The variables are getting set... (3 Replies)
Hi,
I wrote two small scripts to set env variables in a shell.
java_env.csh
#!/bin/csh -fn
setenv JAVA_HOME '/scratch/software/jdk1.5.0_11'
setenv PATH $PATH':'$JAVA_HOME'/bin'
and run it using csh ./java_env.csh
But the env variables are not set. I tried running each line on the... (5 Replies)
I am newbie on Unix system and seek help for updating env variables. The condition is like this:
On Unix server, I log in as oracle user (this is the super for database on Unix), I type > env
all envirnment variables show up. I saw one variable DBA_LIST contains a few email addreses. I need... (2 Replies)
i have a file that i need to edit and replace a single value with another. so i have two variables, $oldvalue and $newvalue but below doesn't work:
ed file.txt << EOF
,s/$oldversion/$newversion/g
wq
EOFi presume it's the $ that is the issue since it's actually special to ed. any suggestions?... (1 Reply)
Hi All,
I have script and it's hardcoded the script ca invoke in user home dir and logs will be redirected to home dir of user.
how to make the same script will be invoke from /usr/bin with out chg the logs and other functions path from /user/homedir .
code is below: pls check how to... (1 Reply)
I have perl script and in the first line we are invoking .sh script to set ENV variables.
e..g
eval '. $envfile; exec $PERL -S $0 "$@"'
I want to change some of the env variables while the program is running and I am settging it like this ..
$ENV{ORACLE_HOME}=trim($oraclehome);... (1 Reply)
Discussion started by: talashil
1 Replies
LEARN ABOUT SUNOS
source
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)