Shell Programming and Scripting

#!/bin/bash
file2=input.rtf
line=`grep "Invoice Number" ${file2} | head -1 | sed 's/\\//g'`
echo "start printing"
echo "line_number:${line}"

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\ab0\ai0\af1\afs18 \ltrch\fcs0 \b0\i0\f40\fs18\insrsid9709693\charrsid550304 Invoice Number:\cell }
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$ replace.ksh
sed: command garbled: s/\//g
start printing
line_number:

aab0aai0aaf1aafs18 altrchafcs0 ab0ai0af40afs18ainsrsid9709693acharrsid550304 Invoice Number:acell }

#!/bin/bash
file2=input.rtf
line=`grep "Invoice Number" ${file2} | head -1 | sed 's/\\\//g'`
echo "start printing"
echo "line_number:${line}"

#!/bin/bash
file2=input
line=`grep "Invoice Number" ${file2} | head -1 | sed 's/\\\/a/g'`
echo "start printing"
echo "line_number:${line}"

$ line=$(sed -n '/Invoice Number/ {s/\\//g;p;q;}' $file2)

$ echo $line
ab0ai0af1afs18 ltrchfcs0 b0i0f40fs18insrsid9709693charrsid550304 Invoice Number:cell }