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shell - Executing commands containing space in Bash

I have a file named cmd that contains a list of Unix commands as follows:

hostname
pwd
ls  /tmp
cat /etc/hostname
ls -la
ps -ef | grep java
cat cmd

I have another script that executes the commands in cmd as:

IFS=$'
'
clear
for cmds in `cat cmd`
do
        if [  $cmds ] ; then
        $cmds;
        echo "****************************";
        fi
done

The problem is that commands in cmd without spaces run fine, but those with spaces are not correctly interpreted by the script. Following is the output:

patrick-laptop
****************************
/home/patrick/bashFiles
****************************
./prog.sh: line 6: ls  /tmp: No such file or directory
****************************
./prog.sh: line 6: cat /etc/hostname: No such file or directory
****************************
./prog.sh: line 6: ls -la: command not found
****************************
./prog.sh: line 6: ps -ef | grep java: command not found
****************************
./prog.sh: line 6: cat cmd: command not found
****************************

What am I missing here?

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1 Answer

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by (71.8m points)

Try changing the one line to eval $cmds rather than just $cmds


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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