Shell script returns error when using 'source'

gvanto · 03-21-2011, 07:34 PM

For some reason the script below works fine when I run it directly but when I run is using source, I get a not found error?

With source:
(line 11 is where the 'test' statement is)

Quote:

gtonder@sydlnx03:~> source set_aliases.sh -v 11:31AM
1
set_aliases.sh
-v
/users/gtonder/pwe/scripts/set_aliases.sh:11: = not found

Without source:

Quote:

gtonder@sydlnx03:~> set_aliases.shv -v
1
/users/gtonder/pwe/scripts/set_aliases.sh
-v
...

Code:

#! /bin/sh
# Sets aliases

VERBOSE=false

echo $#
echo $0

if test \( $# -eq 1 \) -a \( "$1" == "-v" \)
then
   VERBOSE=true
fi

if $VERBOSE ; then
    set -x
fi

#makes:
alias mk='make 16'
alias clean_mk='make clean; mk;'

if $VERBOSE ; then
    set +x
fi

jlinkels · 03-21-2011, 09:54 PM

Somehow I have the idea that what you posted in not exactly the output on your screen, but that you edited in order to post. This is what I see:

Code:

jlinkels@jlinkels-lt:/tmp$ source set_aliases.sh -v 11:31AM
2
/bin/bash
jlinkels@jlinkels-lt:/tmp$ source set_aliases.sh -v
1
/bin/bash
++ alias 'mk=make 16'
++ alias 'clean_mk=make clean; mk;'
++ true
++ set +x
jlinkels@jlinkels-lt:/tmp$ source set_aliases.sh -v 11:31AM
2
/bin/bash
jlinkels@jlinkels-lt:/tmp$ ./set_aliases.sh -v 11:31AM
2
./set_aliases.sh
jlinkels@jlinkels-lt:/tmp$

In your example, calling set_aliases with '-v 11:31AM' your program says it has received on one parameter.

Check if your system uses Bash for sh.

Code:

jlinkels@jlinkels-lt:/tmp$ which sh
/bin/sh
jlinkels@jlinkels-lt:/tmp$ file /bin/sh
/bin/sh: symbolic link to `bash

'

jlinkels

gvanto · 03-21-2011, 10:06 PM

sorry, minus the "11:31AM" ! (that got copied when I copied from the putty console ...

so it should be:

Quote:

gtonder@sydlnx03:~> source set_aliases.sh -v
1
set_aliases.sh
-v
/users/gtonder/pwe/scripts/set_aliases.sh:11: = not found

jlinkels · 03-22-2011, 05:08 AM

Again, it works here:

Code:

jlinkels@jlinkels-lt:/tmp$ source set_aliases.sh -v
1
/bin/bash
++ alias 'mk=make 16'
++ alias 'clean_mk=make clean; mk;'
++ true
++ set +x
jlinkels@jlinkels-lt:/tmp$

Did you try to find out what /bin/sh points to?

jlinkels

mirni · 03-22-2011, 08:22 PM

you have 2 equal signs there in the test. To compare strings, bash uses only one.

Code:

if [ "$1" = "-v" ] ; then .... ; fi

jlinkels · 03-22-2011, 08:24 PM

Single and double equal signs are both allowed. And why does the code run correctly on my computer?

jlinkels

gvanto · 03-22-2011, 08:52 PM

mirni, it worked, thanks alot!

Perhaps the different shell versions run differently in their parsing of equality operators??

Thanks again guys for the help.

gvanto