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Top Forums Shell Programming and Scripting To Create shell script files from a shell script Post 302440517 by forquare on Tuesday 27th of July 2010 11:44:00 AM
Old 07-27-2010
Here we go:
Code:
#!/usr/bin/sh

IFS="
"

fname=epdb_job

for x in `cat $fname`
do
    if [ ! -s $x.epdb.com ]
    then
        echo Creating file...
        cat > $x.epdb.com <<EOF
echo fname1=num_$x.txt
for y in \`cat \$fname1\`
do
    head -\$y t_\$x.mol2 | tail -n 200 | head -48 >>rlig_\$x.mol2
done
EOF
    fi
    echo "done $x"
done

The problem was that the back-ticks needed escaping as it was trying to run that cat command. I've also escaped the variable inside the back-ticks as otherwise it's not printed.

The IFS="
"
Bit makes sure that the for x in `cat $fname` skips spaces and only acts on new lines, if you use spaces to separate entries then take out the IFS bit.

HTH
Ben
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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