Ulimit/ulimit.out

Linux

bash

$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 16382
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) unlimited
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

$ bash --version
GNU bash, version 4.1.5(1)-release (powerpc-unknown-linux-gnu)

ksh

$ ulimit -a
address space limit (kbytes)   (-M)  unlimited
core file size (blocks)        (-c)  0
cpu time (seconds)             (-t)  unlimited
data size (kbytes)             (-d)  unlimited
file size (blocks)             (-f)  unlimited
locks                          (-L)  unlimited
locked address space (kbytes)  (-l)  64
nofile                         (-n)  1024
nproc                          (-u)  unlimited
pipe buffer size (bytes)       (-p)  4096
resident set size (kbytes)     (-m)  unlimited
socket buffer size (bytes)     (-b)  4096
stack size (kbytes)            (-s)  8192
threads                        (-T)  not supported
process size (kbytes)          (-v)  unlimited

$ ksh --version
  version         sh (AT&T Research) 93s+ 2008-01-31

Solaris

bash

$ ulimit -a
core file size        (blocks, -c) unlimited
data seg size         (kbytes, -d) unlimited
file size             (blocks, -f) unlimited
open files                    (-n) 256
pipe size          (512 bytes, -p) 10
stack size            (kbytes, -s) 10240
cpu time             (seconds, -t) unlimited
max user processes            (-u) 16341
virtual memory        (kbytes, -v) unlimited

$ bash --version
GNU bash, version 3.00.16(1)-release (i386-pc-solaris2.10)

ksh

$ ulimit -a
time(seconds)        unlimited
file(blocks)         unlimited
data(kbytes)         unlimited
stack(kbytes)        10240
coredump(blocks)     unlimited
nofiles(descriptors) 256
vmemory(kbytes)      unlimited

$ strings `which ksh` | grep -i version
@(#)Version M-11/16/88i

csh

% ulimit -a
time(seconds)        unlimited
file(blocks)         unlimited
data(kbytes)         unlimited
stack(kbytes)        10240
coredump(blocks)     unlimited
nofiles(descriptors) 256
vmemory(kbytes)      unlimited

(from SUNWcsu)

MacOS

bash

$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 256
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 709
virtual memory          (kbytes, -v) unlimited

$ bash --version
GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin11)

ksh

$ ulimit -a
address space limit (kbytes)   (-M)  unlimited
core file size (blocks)        (-c)  0
cpu time (seconds)             (-t)  unlimited
data size (kbytes)             (-d)  unlimited
file size (blocks)             (-f)  unlimited
locks                          (-L)  not supported
locked address space (kbytes)  (-l)  unlimited
nofile                         (-n)  256
nproc                          (-u)  709
pipe buffer size (bytes)       (-p)  512
resident set size (kbytes)     (-m)  unlimited
socket buffer size (bytes)     (-b)  512
stack size (kbytes)            (-s)  8192
threads                        (-T)  not supported
process size (kbytes)          (-v)  unlimited

$ ksh --version
  version         sh (AT&T Research) 1993-12-28 s+

csh

% ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 256
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 709
virtual memory          (kbytes, -v) unlimited

% csh --version
tcsh 6.17.00 (Astron) 2009-07-10 (x86_64-apple-darwin) options wide,nls,dl,al,kan,sm,rh,color,filec