netpbm pnmcomp Failed

is_dir(/var/www/vhost/hk.edu.hk/netpbm/)
file_exists(/var/www/vhost/hk.edu.hk/netpbm/pnmscale)
getParameter exec.beNice for core plugin
Executing: ( "/var/www/vhost/hk.edu.hk/netpbm/pnmscale" "--version" )
2>"/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgzenfF1"
getParameter exec.expectedStatus for core plugin
file_exists(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgzenfF1)
filesize(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgzenfF1)
fopen(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgzenfF1, r, 0)
feof(Resource id #108
fgets(Resource id #108, 4096)
feof(Resource id #108)
fgets(Resource id #108, 4096)
feof(Resource id #108)
fgets(Resource id #108, 4096)
feof(Resource id #108)
fgets(Resource id #108, 4096)
feof(Resource id #108)
fgets(Resource id #108, 4096)
feof(Resource id #108)
fgets(Resource id #108, 4096)
feof(Resource id #108)
fclose(Resource id #108)
unlink(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgzenfF1)
Regular Output:
Error Output:
pnmscale: Using libnetpbm from Netpbm Version: Netpbm 10.18.12
pnmscale: Compiled Thu Jun 3 16:38:24 PDT 2004 by user "root"
pnmscale: BSD defined
pnmscale: RGB_ENV='RGBDEF'
pnmscale: RGBENV= 'RGBDEF' (env vbl is unset)
Status: 0 (expected 0)
file_exists(/var/www/vhost/hk.edu.hk/netpbm/pnmcut)
Executing: ( "/var/www/vhost/hk.edu.hk/netpbm/pnmcut" "--version" )
2>"/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgBHgzrG"
file_exists(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgBHgzrG)
filesize(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgBHgzrG)
fopen(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgBHgzrG, r, 0)
feof(Resource id #110)
fgets(Resource id #110, 4096)
feof(Resource id #110)
fgets(Resource id #110, 4096)
feof(Resource id #110)
fgets(Resource id #110, 4096)
feof(Resource id #110)
fgets(Resource id #110, 4096)
feof(Resource id #110)
fgets(Resource id #110, 4096)
feof(Resource id #110)
fgets(Resource id #110, 4096)
feof(Resource id #110)
fclose(Resource id #110)
unlink(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgBHgzrG)
Regular Output:
Error Output:
pnmcut: Using libnetpbm from Netpbm Version: Netpbm 10.18.12
pnmcut: Compiled Sat Apr 10 17:07:46 CDT 2004 by user "andrew"
pnmcut: BSD defined
pnmcut: RGB_ENV='RGBDEF'
pnmcut: RGBENV= 'RGBDEF' (env vbl is unset)
Status: 0 (expected 0)
file_exists(/var/www/vhost/hk.edu.hk/netpbm/pnmfile)
Executing: ( "/var/www/vhost/hk.edu.hk/netpbm/pnmfile" "--version" )
2>"/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgjI3Rel"
file_exists(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgjI3Rel)
filesize(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgjI3Rel)
fopen(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgjI3Rel, r, 0)
feof(Resource id #112)
fgets(Resource id #112, 4096)
feof(Resource id #112)
fgets(Resource id #112, 4096)
feof(Resource id #112)
fgets(Resource id #112, 4096)
feof(Resource id #112)
fgets(Resource id #112, 4096)
feof(Resource id #112)
fgets(Resource id #112, 4096)
feof(Resource id #112)
fgets(Resource id #112, 4096)
feof(Resource id #112)
fclose(Resource id #112)
unlink(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgjI3Rel)
Regular Output:
Error Output:
pnmfile: Using libnetpbm from Netpbm Version: Netpbm 10.18.12
pnmfile: Compiled Sat Apr 10 17:07:46 CDT 2004 by user "andrew"
pnmfile: BSD defined
pnmfile: RGB_ENV='RGBDEF'
pnmfile: RGBENV= 'RGBDEF' (env vbl is unset)
Status: 0 (expected 0)
file_exists(/var/www/vhost/hk.edu.hk/netpbm/pnmcomp)
Executing: ( "/var/www/vhost/hk.edu.hk/netpbm/pnmcomp" "--version" )
2>"/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgnAf92Z"
file_exists(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgnAf92Z)
filesize(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgnAf92Z)
fopen(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgnAf92Z, r, 0)
feof(Resource id #114)
fgets(Resource id #114, 4096)
feof(Resource id #114)
fgets(Resource id #114, 4096)
feof(Resource id #114)
fclose(Resource id #114)
unlink(/var/www/vhost/hk.edu.hk/g2data/tmp/g2dbgnAf92Z)
Regular Output:
Error Output:
sh: /var/www/vhost/hk.edu.hk/netpbm/pnmcomp: Permission denied
Status: 126 (expected 0)
file_exists(/var/www/vhost/hk.edu.hk/netpbm/pamcomp)
file_exists(/var/www/vhost/hk.edu.hk/netpbm/pnmflip)

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