Escape special characters in shell scripting

[tulsantide]

Hi,

How to escape special characters in a shell script? Following is working for all the special characters below except for $ and (). Please let me know the solution.

echo "@abc!=${bca}:/{^t&e-st*#}"|sed 's/[$!@{#%}^&*()/-]/\\&/g'
\@abc\!=:\/\{\^t\&e\-st\*\#\}


Thanks

 

[SamBones]

I'm not sure what you're trying to do.

The ${bca} is being replaced by the shell because it's in double quotes, so you're telling the shell it's ok to replace that. If it was in single quotes, the shell would leave it alone.

echo [b][COLOR=#EF2929]'[/color][/b]@abc!=${bca}:/{^t&e-st*#}[b][COLOR=#EF2929]'[/color][/b] | sed 's/[$!@{#%}^&*()/-]/\\&/g'
\@abc\!=[b][COLOR=#EF2929]\$\{bca\}[/color][/b]:\/\{\^t\&e\-st\*\#\}

Not sure where the () issue comes in.