Creating a script to run two commands

anjaan · 06-10-2004, 02:32 PM

Hi all,

I would like to create a script that runs two commands. One of the command has lot of aruguments along with the command. Any help is appreciated.

Thanks in advance.

jschiwal · 06-10-2004, 02:36 PM

You haven't indicated what you are trying to accomplish, or even what type of script you are writing, bash, perl, python?

david_ross · 06-10-2004, 02:36 PM

script.sh

Code:

/path/to/command a really long set of options that go on for ever can be placed like this there is really nothing else to it

Make the file executable then run it.

anjaan · 06-10-2004, 02:40 PM

Sorry....in bash

===========
#!/bin/bash

command 1

command 2
============

above doesn't work

cmfarley19 · 06-10-2004, 02:41 PM

create a file called something like script.sh

edit the file to contain the following

Code:

#!/bin/bash

command1 -lots -of -arguments
command2

Set the permissions on the file so that you have rwx.
To run the script try

Code:

$ ./script.sh

anjaan · 06-10-2004, 02:44 PM

those lots of arguments are running in over 3 lines...how will it differentiate between end of command 1 and start of command 2 ? Plus command one gives error on the second line..it thinks its a new command.

cmfarley19 · 06-10-2004, 02:53 PM

The backslash '\'

Code:

#!/bin/bash

command1 -lots -of -arguments \
          -even -more -arguemtns \
          -I'm -talking -a -whole -lot -of -arguments
command2

cmfarley19 · 06-10-2004, 02:55 PM

David Ross,
We must have posted nearly simultaneously.

Good Suggestion!!!

anjaan · 06-10-2004, 03:02 PM

woo hoo .. its working ... u guys are the best

Thanks vey much!!!

Hko · 06-10-2004, 03:03 PM

[QUOTE]those lots of arguments are running in over 3 lines...[quote]3 lines is not that much. To have bash confused over large command lines, - if ever - you probably need thousands (millions?) of lines!

Quote:

how will it differentiate between end of command 1 and start of command 2 ?

Just put the command on one line. Bash will know the next line is the next command!

However, if it bothers you (or your editor) to have such long lines in the script, then spread the command over several lines and finish all but the last line with a backslash ( \ ). Nothing (not even spaces or tabs) should go after the backslash.

Like this:

Code:

commandONE \
         --first-option \
         --second-option \
         --third-option \
         first_argument \
         second_argument \
         LAST_argument
commandTWO \
         --first-option \
         --second-option \
         --third-option \
         first_argument \
         second_argument \
         LAST_argument

jschiwal · 06-11-2004, 05:53 AM

Sorry I was a litte curt on my answer. The second sentence didn't sink in.

Goala · 06-15-2004, 02:51 AM

take care and don't put a space or any other character after the \