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grep using ASCII values

 
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# 1  
Old 01-09-2008
grep using ASCII values
machine: HPUX

file: a.dat

contents:
decimal 1
decimal 2
string 1
string 2

ASCII value of 'd': 100.

to grep lines that have 'd', I use the following command
grep d a.dat

My requirement:
I should grep for lines that contain 'd'. But I should use ASCII value of 'd' in the command line.

I played around with 'grep \100' etc. But could not get the expected result. Please help me out in this.

Thanks,
sriksama
# 2  
Old 01-09-2008
Code:
#!/bin/sh
awk -v c="$1" 'BEGIN{input=sprintf ("%c", c)}$0~input' file

 
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