MRA
asked on
Call one script from another
Hi ,
I need to write a Unix script A which echoes commands into another script B so that we can execute B from the shell .
Please let me know how to do this
Rgds
MRA
I need to write a Unix script A which echoes commands into another script B so that we can execute B from the shell .
Please let me know how to do this
Rgds
MRA
ASKER
Hi tfewster,
Thanks for the quick reply.
But I need to write 100+ lines of code into 2nd script
Is there any easier way of doing it, please let me know.
Rgds
MRA
Thanks for the quick reply.
But I need to write 100+ lines of code into 2nd script
Is there any easier way of doing it, please let me know.
Rgds
MRA
Do you mean that you already have you commands in a file and you just don't want to do all of the typing?
If so, assuming your commands are in a file called comm, change tfewster's script to:
#start of scriptA
various commands
.
echo "#!/usr/bin/ksh" > /tmp/scriptB
(while read line
do
echo $line >> /tmp/scriptB
done ) < comm
.
Other commands
chmod 755 /tmp/scriptB
# end of scriptA
If that's not what you want, give us a few more details
If so, assuming your commands are in a file called comm, change tfewster's script to:
#start of scriptA
various commands
.
echo "#!/usr/bin/ksh" > /tmp/scriptB
(while read line
do
echo $line >> /tmp/scriptB
done ) < comm
.
Other commands
chmod 755 /tmp/scriptB
# end of scriptA
If that's not what you want, give us a few more details
liddler,
if true what you assume, it will be better to do
cp comm scriptB
vi scriptB and add "#!/usr/bin/ksh" at the top
chmod 755 scriptB
if true what you assume, it will be better to do
cp comm scriptB
vi scriptB and add "#!/usr/bin/ksh" at the top
chmod 755 scriptB
HamdyHassan - good point! maybe we don't really understand MRA wants.
Possibly scriptB will need to be "customised" by inserting variables, like writing a .netrc file for ftp to use...
MRA, if you can give us more background on what you are trying to do, we may be able to suggest an easier way.
MRA, if you can give us more background on what you are trying to do, we may be able to suggest an easier way.
Just to illustrate a point, here's a easier way to write 100+ lines of code into a 2nd script
#!/bin/sh
exec 1>newscript.sh
cat <<EOF
#!/bin/sh
#
# This is an automatically generated script
EOF
a=1
while [ $a -lt 100 ]
do
echo "echo \"a=$a\""
a=`expr $a + 1`
done
#!/bin/sh
exec 1>newscript.sh
cat <<EOF
#!/bin/sh
#
# This is an automatically generated script
EOF
a=1
while [ $a -lt 100 ]
do
echo "echo \"a=$a\""
a=`expr $a + 1`
done
ASKER
Hi All,
Thanks a lot for the response.
Sorry for the inadequate data.
The actual scenario is,
I have a set of commands in script A.
At runtime I need to create script B from A so that finally user can run script B at unix prompt after running script A.
A portion of commands from script A needs to be redirected to script B.
I used the method indicated by Tintin and it solved my problem .
Now the problem is , after
#!/bin/sh
exec 1>newscript.sh
cat <<EOF
#!/bin/sh
#
# This is an automatically generated script
EOF
I have ,
echo " Now execute newscript.sh"
Even this echo statement is going into newscript.sh
How do I stop this redirection now???
Please let me know
Thanks again.
MRA
Thanks a lot for the response.
Sorry for the inadequate data.
The actual scenario is,
I have a set of commands in script A.
At runtime I need to create script B from A so that finally user can run script B at unix prompt after running script A.
A portion of commands from script A needs to be redirected to script B.
I used the method indicated by Tintin and it solved my problem .
Now the problem is , after
#!/bin/sh
exec 1>newscript.sh
cat <<EOF
#!/bin/sh
#
# This is an automatically generated script
EOF
I have ,
echo " Now execute newscript.sh"
Even this echo statement is going into newscript.sh
How do I stop this redirection now???
Please let me know
Thanks again.
MRA
hey,
you could simply put the 'echo "Now execute.." ' statement before you do the exec. it might work.
you could simply put the 'echo "Now execute.." ' statement before you do the exec. it might work.
hey,
you could simply put the 'echo "Now execute.." ' statement before you do the exec. it might work.
you could simply put the 'echo "Now execute.." ' statement before you do the exec. it might work.
hey,
you could simply put the 'echo "Now execute.." ' statement before you do the exec. it might work.
you could simply put the 'echo "Now execute.." ' statement before you do the exec. it might work.
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ASKER
Hi,
Thanks for all the help, I am done with the script now.
To stop redirection I used the following
exec >&2
Rgds
MRA
Thanks for all the help, I am done with the script now.
To stop redirection I used the following
exec >&2
Rgds
MRA
#start of scriptA
various commands
.
echo "#!/usr/bin/ksh" > /tmp/scriptB
echo "first_command" >> /tmp/scriptB
.
Other commands
chmod 755 /tmp/scriptB
# end of scriptA