Pamfixtrunc User Manual(1) General Commands Manual Pamfixtrunc User Manual(1)
NAME
pamfixtrunc - replaced by pamfix
DESCRIPTION
This program is part of Netpbm(1).
pamfixtrunc was replaced in Netpbm 10.66 (March 2014) by pamfix(1).
pamfix with a -truncate option is the same thing as pamfixtrunc. But
pamfix has other options to repair other kinds of corruption.
Another change that came with Netpbm 10.66 is that an invalid sample
value (a value greater than the maxval the image declares in its header)
is considered by the common Netpbm image reading facility (in libnetpbm)
to be unreadable, which means the file is essentially truncated. In
older Netpbm, the invalid sample value propagates to the output in a
program such as pamfixtrunc. Thus, in older Netpbm a file with 100 rows
and an invalid sample value in the 3rd row would pass through pamfix-
trunc unchanged. But in Netpbm 10.66, pamfix -truncate with the same
input would produce an output image with only 2 rows. While it is not
possible in 10.66 to cause pamfix to generate an invalid Netpbm image,
you can use -clip and -changemaxval options to avoid truncating the file
in a case like this.
You should not make any new use of pamfixtrunc and if you modify an ex-
isting use, you should upgrade to pamfixtrunc. But note that if you
write a program that might have to be used with very old Netpbm, pamfix-
trunc is the only way to do that.
DOCUMENT SOURCE
This manual page was generated by the Netpbm tool 'makeman' from HTML
source. The master documentation is at
http://netpbm.sourceforge.net/doc/pamfixtrunc.html
netpbm documentation Pamfixtrunc User Manual(1)
Generated by dwww version 1.16 on Sat Oct 3 07:34:51 CEST 2026.