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Top Forums Shell Programming and Scripting Process existence or/and permission Post 302999872 by chebarbudo on Thursday 29th of June 2017 05:09:14 AM
Old 06-29-2017
All I was hiding from stderr is the non-existing stuff you mentioned. I only wanted to show process directories (starting with a digit). This is the full content of my /proc. Sorry for the long listing. Just wanted you to "see" the problem:
Code:
santiago@alphard:~$ ls -l /proc/
total 0
dr-xr-x---  7 santiago root     0 Jun 29 11:02 7476
dr-xr-x---  7 santiago root     0 Jun 29 11:02 7477
dr-xr-x---  7 santiago root     0 Jun 29 11:02 7506
dr-xr-xr-x  2 root     root     0 Jun 29 11:02 acpi
-r--r--r--  1 root     root     0 Jun 29 11:02 buddyinfo
dr-xr-xr-x  4 root     root     0 Jun 29 11:02 bus
-r--r--r--  1 root     root     0 Jun 29 11:02 cgroups
-r--r--r--  1 root     root     0 Jun 29 11:02 cmdline
-r--------  1 root     root 22624 Jun 29 11:02 config.gz
-r--r--r--  1 root     root     0 Jun 29 11:02 consoles
-r--r--r--  1 root     root     0 Jun 29 11:02 cpuinfo
-r--r--r--  1 root     root     0 Jun 29 11:02 crypto
-r--r--r--  1 root     root     0 Jun 29 11:02 devices
-r--r--r--  1 root     root     0 Jun 29 11:02 diskstats
-r--r--r--  1 root     root     0 Jun 29 11:02 dma
-r--r--r--  1 root     root     0 Jun 29 11:02 drbd
dr-xr-xr-x  2 root     root     0 Jun 29 11:02 driver
-r--r--r--  1 root     root     0 Jun 29 11:02 execdomains
-r--r--r--  1 root     root     0 Jun 29 11:02 fb
-r--r--r--  1 root     root     0 Jun 29 11:02 filesystems
dr-xr-xr-x 12 root     root     0 Jun 29 11:02 fs
dr-xr-xr-x  4 root     root     0 Jun 29 11:02 ide
-r--r--r--  1 root     root     0 Jun 29 11:02 interrupts
-r--r--r--  1 root     root     0 Jun 29 11:02 iomem
-r--r--r--  1 root     root     0 Jun 29 11:02 ioports
dr-xr-xr-x  2 root     root     0 Jun 29 11:02 ipmi
dr-xr-xr-x 32 root     root     0 Jun 29 11:02 irq
-r--r--r--  1 root     root     0 Jun 29 11:02 kallsyms
-r--r--r--  1 root     root     0 Jun 29 11:02 key-users
-r--------  1 root     root     0 Nov 29  2016 kmsg
-r--r--r--  1 root     root     0 Jun 29 11:02 loadavg
-r--r--r--  1 root     root     0 Jun 29 11:02 locks
-r--r--r--  1 root     root     0 Nov 29  2016 mdstat
-r--r--r--  1 root     root     0 Jun 29 11:02 meminfo
-r--r--r--  1 root     root     0 Jun 29 11:02 misc
lrwxrwxrwx  1 root     root    11 Jun 29 11:02 mounts -> self/mounts
dr-xr-xr-x  2 root     root     0 Jun 29 11:02 mpt
-r--r--r--  1 root     root     0 Jun 29 11:02 mtd
-rw-r--r--  1 root     root     0 Jun 29 11:02 mtrr
lrwxrwxrwx  1 root     root     8 Jun 29 11:02 net -> self/net
-r--r--r--  1 root     root     0 Jun 29 11:02 pagetypeinfo
-r--r--r--  1 root     root     0 Jun 29 11:02 partitions
dr-xr-xr-x  3 root     root     0 Jun 29 11:02 scsi
lrwxrwxrwx  1 root     root     0 Nov 29  2016 self -> 7506
-r--------  1 root     root     0 Jun 29 11:02 slabinfo
-r--r--r--  1 root     root     0 Jun 29 11:02 softirqs
-r--r--r--  1 root     root     0 Jun 29 11:02 stat
-r--r--r--  1 root     root     0 Jun 29 11:02 swaps
dr-xr-xr-x  1 root     root     0 Apr 15 18:46 sys
--w-------  1 root     root     0 Jun 29 11:02 sysrq-trigger
dr-xr-xr-x  2 root     root     0 Jun 29 11:02 sysvipc
-r--r--r--  1 root     root     0 Jun 29 11:02 timer_list
dr-xr-xr-x  4 root     root     0 Jun 29 11:02 tty
-r--r--r--  1 root     root     0 Jun 29 11:02 uptime
-r--r--r--  1 root     root     0 Jun 29 11:02 version
-r--------  1 root     root     0 Jun 29 11:02 vmallocinfo
-r--r--r--  1 root     root     0 Jun 29 11:02 vmstat
-r--r--r--  1 root     root     0 Jun 29 11:02 zoneinfo

And with sudo:
Code:
santiago@alphard:~$ sudo ls -lv /proc/
total 0
dr-xr-x---  7 root     root     0 Apr 15 18:46 1
dr-xr-x---  7 root     root     0 Apr 15 18:46 2
dr-xr-x---  7 root     root     0 Apr 15 18:46 3
dr-xr-x---  7 root     root     0 Apr 15 18:46 5
dr-xr-x---  7 root     root     0 Apr 15 18:46 7
dr-xr-x---  7 root     root     0 Apr 15 18:46 8
dr-xr-x---  7 root     root     0 Apr 15 18:46 9
dr-xr-x---  7 root     root     0 Apr 15 18:46 10
dr-xr-x---  7 root     root     0 Apr 15 18:46 11
dr-xr-x---  7 root     root     0 Apr 15 18:46 13
dr-xr-x---  7 root     root     0 Apr 15 18:46 14
dr-xr-x---  7 root     root     0 Apr 15 18:46 15
dr-xr-x---  7 root     root     0 Apr 15 18:46 17
dr-xr-x---  7 root     root     0 Apr 15 18:46 18
dr-xr-x---  7 root     root     0 Apr 15 18:46 19
dr-xr-x---  7 root     root     0 Apr 15 18:46 21
dr-xr-x---  7 root     root     0 Apr 15 18:46 22
dr-xr-x---  7 root     root     0 Apr 15 18:46 23
dr-xr-x---  7 root     root     0 Apr 15 18:46 25
dr-xr-x---  7 root     root     0 Apr 15 18:46 26
dr-xr-x---  7 root     root     0 Apr 15 18:46 27
dr-xr-x---  7 root     root     0 Apr 15 18:46 29
dr-xr-x---  7 root     root     0 Apr 15 18:46 30
dr-xr-x---  7 root     root     0 Apr 15 18:46 31
dr-xr-x---  7 root     root     0 Apr 15 18:46 33
dr-xr-x---  7 root     root     0 Apr 15 18:46 34
dr-xr-x---  7 root     root     0 Apr 15 18:46 35
dr-xr-x---  7 root     root     0 Apr 15 18:46 37
dr-xr-x---  7 root     root     0 Apr 15 18:46 38
dr-xr-x---  7 root     root     0 Apr 15 18:46 39
dr-xr-x---  7 root     root     0 Apr 15 18:46 40
dr-xr-x---  7 root     root     0 Apr 15 18:46 41
dr-xr-x---  7 root     root     0 Apr 15 18:46 42
dr-xr-x---  7 root     root     0 Apr 15 18:46 43
dr-xr-x---  7 root     root     0 Apr 15 18:46 44
dr-xr-x---  7 root     root     0 Apr 15 18:46 45
dr-xr-x---  7 root     root     0 Apr 15 18:46 46
dr-xr-x---  7 root     root     0 Apr 15 18:46 47
dr-xr-x---  7 root     root     0 Apr 15 18:46 48
dr-xr-x---  7 root     root     0 Apr 15 18:46 49
dr-xr-x---  7 root     root     0 Apr 15 18:46 50
dr-xr-x---  7 root     root     0 Apr 15 18:46 51
dr-xr-x---  7 root     root     0 Apr 15 18:46 52
dr-xr-x---  7 root     root     0 Apr 15 18:46 53
dr-xr-x---  7 root     root     0 Apr 15 18:46 54
dr-xr-x---  7 root     root     0 Apr 15 18:46 130
dr-xr-x---  7 root     root     0 Apr 15 18:46 131
dr-xr-x---  7 root     root     0 Apr 15 18:46 132
dr-xr-x---  7 root     root     0 Apr 15 18:46 133
dr-xr-x---  7 root     root     0 Apr 15 18:46 134
dr-xr-x---  7 root     root     0 Apr 15 18:46 135
dr-xr-x---  7 root     root     0 Apr 15 18:46 136
dr-xr-x---  7 root     root     0 Apr 15 18:46 137
dr-xr-x---  7 root     root     0 Apr 15 18:46 138
dr-xr-x---  7 root     root     0 Apr 15 18:46 139
dr-xr-x---  7 root     root     0 Apr 15 18:46 140
dr-xr-x---  7 root     root     0 Apr 15 18:46 141
dr-xr-x---  7 root     root     0 Apr 15 18:46 142
dr-xr-x---  7 root     root     0 Apr 15 18:46 143
dr-xr-x---  7 root     root     0 Apr 15 18:46 144
dr-xr-x---  7 root     root     0 Apr 15 18:46 145
dr-xr-x---  7 root     root     0 Apr 15 18:46 146
dr-xr-x---  7 root     root     0 Apr 15 18:46 147
dr-xr-x---  7 root     root     0 Apr 15 18:46 148
dr-xr-x---  7 root     root     0 Apr 15 18:46 149
dr-xr-x---  7 root     root     0 Apr 15 18:46 150
dr-xr-x---  7 root     root     0 Apr 15 18:46 151
dr-xr-x---  7 root     root     0 Apr 15 18:46 182
dr-xr-x---  7 root     root     0 Apr 15 18:46 184
dr-xr-x---  7 root     root     0 Apr 15 18:46 187
dr-xr-x---  7 root     root     0 Apr 15 18:46 190
dr-xr-x---  7 root     root     0 Apr 15 18:46 191
dr-xr-x---  7 root     root     0 Apr 15 18:46 192
dr-xr-x---  7 root     root     0 Apr 15 18:46 193
dr-xr-x---  7 root     root     0 Apr 15 18:46 195
dr-xr-x---  7 root     root     0 Apr 15 18:46 196
dr-xr-x---  7 root     root     0 Apr 15 18:46 197
dr-xr-x---  7 root     root     0 Apr 15 18:46 198
dr-xr-x---  7 root     root     0 Apr 15 18:46 199
dr-xr-x---  7 root     root     0 Apr 15 18:46 200
dr-xr-x---  7 root     root     0 Apr 15 18:46 201
dr-xr-x---  7 root     root     0 Apr 15 18:46 202
dr-xr-x---  7 root     root     0 Apr 15 18:46 203
dr-xr-x---  7 root     root     0 Apr 15 18:46 204
dr-xr-x---  7 root     root     0 Apr 15 18:46 205
dr-xr-x---  7 root     root     0 Apr 15 18:46 206
dr-xr-x---  7 root     root     0 Apr 15 18:46 207
dr-xr-x---  7 root     root     0 Apr 15 18:46 213
dr-xr-x---  7 root     root     0 Apr 15 18:46 214
dr-xr-x---  7 root     root     0 Apr 15 18:46 215
dr-xr-x---  7 root     root     0 Apr 15 18:46 218
dr-xr-x---  7 root     root     0 Apr 15 18:46 219
dr-xr-x---  7 root     root     0 Apr 15 18:46 221
dr-xr-x---  7 root     root     0 Apr 15 18:46 222
dr-xr-x---  7 root     root     0 Apr 15 18:46 223
dr-xr-x---  7 root     root     0 Apr 15 18:46 224
dr-xr-x---  7 root     root     0 Apr 15 18:46 225
dr-xr-x---  7 root     root     0 Apr 15 18:46 226
dr-xr-x---  7 root     root     0 Apr 15 18:46 227
dr-xr-x---  7 root     root     0 Apr 15 18:46 228
dr-xr-x---  7 root     root     0 Apr 15 18:46 229
dr-xr-x---  7 root     root     0 Apr 15 18:46 230
dr-xr-x---  7 root     root     0 Apr 15 18:46 231
dr-xr-x---  7 root     root     0 Apr 15 18:46 232
dr-xr-x---  7 root     root     0 Apr 15 18:46 233
dr-xr-x---  7 root     root     0 Apr 15 18:46 234
dr-xr-x---  7 root     root     0 Apr 15 18:46 235
dr-xr-x---  7 root     root     0 Apr 15 18:46 236
dr-xr-x---  7 root     root     0 Apr 15 18:46 237
dr-xr-x---  7 root     root     0 Apr 15 18:46 238
dr-xr-x---  7 root     root     0 Apr 15 18:46 239
dr-xr-x---  7 root     root     0 Apr 15 18:46 240
dr-xr-x---  7 root     root     0 Apr 15 18:46 241
dr-xr-x---  7 root     root     0 Apr 15 18:46 242
dr-xr-x---  7 root     root     0 Apr 15 18:46 243
dr-xr-x---  7 root     root     0 Apr 15 18:46 244
dr-xr-x---  7 root     root     0 Apr 15 18:46 353
dr-xr-x---  7 root     root     0 Jun 12 17:01 505
dr-xr-x---  7 root     root     0 Apr 15 18:46 603
dr-xr-x---  7 root     root     0 Apr 15 18:46 776
dr-xr-x---  7 root     root     0 Apr 15 18:46 1731
dr-xr-x---  7 root     root     0 Apr 15 18:46 1732
dr-xr-x---  7 root     root     0 Apr 15 18:46 1788
dr-xr-x---  7 root     root     0 Apr 15 18:46 1789
dr-xr-x---  7 root     root     0 Apr 15 18:46 1798
dr-xr-x---  7 root     root     0 Apr 15 18:46 1799
dr-xr-x---  7 root     root     0 Apr 15 18:46 1822
dr-xr-x---  7 root     root     0 Apr 15 18:46 1823
dr-xr-x---  7 root     root     0 Apr 15 18:46 1825
dr-xr-x---  7 root     root     0 Apr 15 18:46 1826
dr-xr-x---  7 root     root     0 Apr 15 18:46 2344
dr-xr-x---  7 root     root     0 Apr 15 18:46 2418
dr-xr-x---  7 root     root     0 Apr 15 18:46 2588
dr-xr-x---  7 root     root     0 Apr 15 18:46 2596
dr-xr-x---  7 root     root     0 Apr 15 18:46 2597
dr-xr-x---  7 root     root     0 Apr 15 18:46 2598
dr-xr-x---  7 root     root     0 Apr 15 18:46 2599
dr-xr-x---  7 root     root     0 Apr 15 18:46 2600
dr-xr-x---  7 root     root     0 Apr 15 18:46 2601
dr-xr-x---  7 root     root     0 Apr 15 18:46 2605
dr-xr-x---  7 root     root     0 Apr 15 18:46 2606
dr-xr-x---  7 root     root     0 Apr 15 18:46 2607
dr-xr-x---  7 root     root     0 Jun 14 12:01 3204
dr-xr-x---  7 root     root     0 Apr 15 18:46 3654
dr-xr-x---  7 root     root     0 Apr 15 18:46 3861
dr-xr-x---  7 root     root     0 May 19 12:01 5595
dr-xr-x---  7 root     root     0 Jun 29 11:01 7351
dr-xr-x---  7 www-data root     0 Jun 29 11:01 7365
dr-xr-x---  7 root     root     0 Jun 29 11:02 7474
dr-xr-x---  7 santiago root     0 Jun 29 11:02 7476
dr-xr-x---  7 santiago root     0 Jun 29 11:02 7477
dr-xr-x---  7 www-data root     0 Jun 29 11:03 7562
dr-xr-x---  7 www-data root     0 Jun 29 11:04 7634
dr-xr-x---  7 www-data root     0 Jun 29 11:04 7635
dr-xr-x---  7 www-data root     0 Jun 29 11:06 7693
dr-xr-x---  7 www-data root     0 Jun 29 11:06 7695
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7748
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7751
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7755
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7756
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7759
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7760
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7764
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7765
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7768
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7769
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7771
dr-xr-x---  7 www-data root     0 Jun 29 11:07 7774
dr-xr-x---  7 root     root     0 Jun 29 11:07 7820
dr-xr-x---  7 santiago root     0 Jun 29 11:07 7821
dr-xr-x---  7 root     root     0 Jun 29 11:07 7822
dr-xr-x---  7 root     root     0 Apr 15 18:46 8996
dr-xr-x---  7 root     root     0 Apr 15 18:46 9130
dr-xr-x---  7 bind     root     0 Apr 15 18:46 9165
dr-xr-x---  7 ntp      root     0 Apr 15 18:46 10865
dr-xr-x---  7 postfix  root     0 Jun 29 09:37 11110
dr-xr-x---  7 root     root     0 Jun 14 17:00 11454
dr-xr-x---  7 root     root     0 May 27 03:01 11919
dr-xr-x---  7 root     root     0 May  7 05:01 12601
dr-xr-x---  7 root     root     0 Jun 18 03:01 12891
dr-xr-x---  7 root     root     0 May  7 02:01 13866
dr-xr-x---  7 root     root     0 Apr 15 18:46 14691
dr-xr-x---  7 postfix  root     0 Apr 15 18:46 17272
dr-xr-x---  7 root     root     0 Apr 15 18:46 24950
dr-xr-x---  7 postfix  root     0 Apr 15 18:46 24957
dr-xr-x---  7 root     root     0 Apr 15 18:46 26142
dr-xr-x---  7 root     root     0 Jun 29 08:16 26908
dr-xr-x---  7 root     root     0 Apr 15 18:46 30321
dr-xr-x---  7 root     root     0 Apr 15 18:46 30662
dr-xr-x---  7 root     root     0 Jun  4 04:01 30988
dr-xr-xr-x  2 root     root     0 Jun 29 11:07 acpi
-r--r--r--  1 root     root     0 Jun 29 11:07 buddyinfo
dr-xr-xr-x  4 root     root     0 Jun 29 11:07 bus
-r--r--r--  1 root     root     0 Jun 29 11:07 cgroups
-r--r--r--  1 root     root     0 Jun 29 11:07 cmdline
-r--------  1 root     root 22624 Jun 29 11:07 config.gz
-r--r--r--  1 root     root     0 Jun 29 11:07 consoles
-r--r--r--  1 root     root     0 Jun 29 11:07 cpuinfo
-r--r--r--  1 root     root     0 Jun 29 11:07 crypto
-r--r--r--  1 root     root     0 Jun 29 11:07 devices
-r--r--r--  1 root     root     0 Jun 29 11:07 diskstats
-r--r--r--  1 root     root     0 Jun 29 11:07 dma
-r--r--r--  1 root     root     0 Jun 29 11:07 drbd
dr-xr-xr-x  2 root     root     0 Jun 29 11:07 driver
-r--r--r--  1 root     root     0 Jun 29 11:07 execdomains
-r--r--r--  1 root     root     0 Jun 29 11:07 fb
-r--r--r--  1 root     root     0 Jun 29 11:07 filesystems
dr-xr-xr-x 12 root     root     0 Jun 29 11:07 fs
dr-xr-xr-x  4 root     root     0 Jun 29 11:07 ide
-r--r--r--  1 root     root     0 Jun 29 11:07 interrupts
-r--r--r--  1 root     root     0 Jun 29 11:07 iomem
-r--r--r--  1 root     root     0 Jun 29 11:07 ioports
dr-xr-xr-x  2 root     root     0 Jun 29 11:07 ipmi
dr-xr-xr-x 32 root     root     0 Jun 29 11:07 irq
-r--r--r--  1 root     root     0 Jun 29 11:07 kallsyms
-r--r--r--  1 root     root     0 Jun 29 11:07 key-users
-r--------  1 root     root     0 Nov 29  2016 kmsg
-r--r--r--  1 root     root     0 Jun 29 11:07 loadavg
-r--r--r--  1 root     root     0 Jun 29 11:07 locks
-r--r--r--  1 root     root     0 Nov 29  2016 mdstat
-r--r--r--  1 root     root     0 Jun 29 11:07 meminfo
-r--r--r--  1 root     root     0 Jun 29 11:07 misc
lrwxrwxrwx  1 root     root    11 Jun 29 11:07 mounts -> self/mounts
dr-xr-xr-x  2 root     root     0 Jun 29 11:07 mpt
-r--r--r--  1 root     root     0 Jun 29 11:07 mtd
-rw-r--r--  1 root     root     0 Jun 29 11:07 mtrr
lrwxrwxrwx  1 root     root     8 Jun 29 11:07 net -> self/net
-r--r--r--  1 root     root     0 Jun 29 11:07 pagetypeinfo
-r--r--r--  1 root     root     0 Jun 29 11:07 partitions
dr-xr-xr-x  3 root     root     0 Jun 29 11:07 scsi
lrwxrwxrwx  1 root     root     0 Nov 29  2016 self -> 7822
-r--------  1 root     root     0 Jun 29 11:07 slabinfo
-r--r--r--  1 root     root     0 Jun 29 11:07 softirqs
-r--r--r--  1 root     root     0 Jun 29 11:07 stat
-r--r--r--  1 root     root     0 Jun 29 11:07 swaps
dr-xr-xr-x  1 root     root     0 Apr 15 18:46 sys
--w-------  1 root     root     0 Jun 29 11:07 sysrq-trigger
dr-xr-xr-x  2 root     root     0 Jun 29 11:07 sysvipc
-r--r--r--  1 root     root     0 Jun 29 11:07 timer_list
dr-xr-xr-x  4 root     root     0 Jun 29 11:07 tty
-r--r--r--  1 root     root     0 Jun 29 11:07 uptime
-r--r--r--  1 root     root     0 Jun 29 11:07 version
-r--------  1 root     root     0 Jun 29 11:07 vmallocinfo
-r--r--r--  1 root     root     0 Jun 29 11:07 vmstat
-r--r--r--  1 root     root     0 Jun 29 11:07 zoneinfo

 

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