[SOLVED] Print pattern on a string with special character

Issue

How to print only string figure with the following line :

\begin{figure}[h!]

I tried :

firstLine='\begin{figure}[h!]'
echo $firstLine | sed -n 's/\\begin{\(.*\)}/\1/p'

but returns :

figure[h!] instead of figure

It seems that issue comes from [] or ! character.

Solution

firstLine='\begin{figure}[h!]'
echo "$firstLine" | sed 's/.*{\(.*\)}.*/\1/'

Output:

figure

With your code (add .*):

echo $firstLine | sed -n 's/\\begin{\(.*\)}.*/\1/p'

Answered By - Cyrus

Answer Checked By - Marie Seifert (WPSolving Admin)