Help needed in padding leading zeros

jakSun8 · #1 (**permalink**) 03-13-2008

Hi all,
I have file with numeric values. I need to pad each value with leading zeros such that total lenght of each value is 16.

Example:
cat tmp.txt
502455
50255
5026
5027
5028

Output
0000000000502455
0000000000050255
0000000000005026
0000000000005027
0000000000005028

Any help is appreciated
Thanks,
Jak

ghostdog74 · #2 (**permalink**) 03-13-2008

Code:

# awk '{printf "%015s\n", $0}' file
000000000502455
000000000050255
000000000005026
000000000005027
000000000005028

radoulov · #3 (**permalink**) 03-13-2008

Code:

printf "%.16d\n" $(<tmp.txt)

jakSun8 · #4 (**permalink**) 03-13-2008

Thanks guys!
Jak

jakSun8 · #5 (**permalink**) 07-01-2008

How do i pad the hexadecimal values with leading zeroes

hex=`echo "obase=16;$data" | bc`
paddedData=`printf "%s" $hex `
echo $paddedData

results in
0
1
9
A

i want
00
01
09
0A

Any help is appreciated
JAK

dennis.jacob · #6 (**permalink**) 07-02-2008

Try like this:

Code:

"/" > x=A
"/" > echo $x | awk '{printf "%02s\n",$0}'
0A
"/" > x=9
"/" > echo $x | awk '{printf "%02s\n",$0}'
09

Annihilannic · #7 (**permalink**) 07-02-2008

paddedData=`printf "%02x" 0x$hex `

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