Linux Comandos

Comando diff

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 03:04:00 +0000

Linux Comandos

diff fichero1 fichero2

Compara el fichero1 con el fichero2, muestra las difirencias.

Ejemplo:

unlink /home/ajpdsoft/web

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Linux Comandos

Comando deluser

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 03:03:00 +0000

Linux Comandos

deluser nombreusuario

Elimina el usuario nombreusuario y todos sus archivos de configuración.

Ejemplo:

deluser alonso

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Linux Comandos

Comando discover ethernet

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 03:02:00 +0000

Linux Comandos

discover ethernet

Muestra el driver de la tarjeta de red.

Ejemplo:

discover ethernet

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Linux Comandos

Comando du nombredirectorio -h -s

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 03:02:00 +0000

Linux Comandos

du nombredirectorio -h -s

Muestra el tamaño de todos los subdirectorios del directorio especificado y el tamaño total del mismo .

-h: Muestra el resultado en unidades entendibles por el usuario (Bytes, MB, GB, etc).

-s: no muestra el tamaño de los subdirectorios, sí lo tiene en cuenta para el tamaño total de la carpeta

Ejemplo:

du -sh /home

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Linux Comandos

Comando chgrp

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 03:01:00 +0000

Linux Comandos

chgrp grupo archivo

Cambia el grupo del archivo especificado al grupo especificado.

Ejemplo:

chgrp accesored mysql.cnf

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Linux Comandos

Comando chkconfig

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 03:01:00 +0000

Linux Comandos

chkconfig

Muestra/Modifica el estado de los servicios del sistema en cada nivel de arranque (runlevel).

Ejemplo:

chkconfig --list postgresql

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Linux Comandos

Comando df -h

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 03:00:00 +0000

Linux Comandos

df -h

Muestra las unidades de disco, el tamaño y el espacio libre.

-h: muestra el resultado en unidades entendibles por el usuario (M= Megabytes, G=Gigabytes, etc).

Ejemplo:

df -h

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Linux Comandos

Comando crontab -e

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 03:00:00 +0000

Linux Comandos

crontab -e

Edita el fichero "crontab" (equivalente al programador de tareas de Windows). Permite agregar nuevas tareas programadas, modificar o eliminar las actuales.

Ejemplo:

crontab -e

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Linux Comandos

Comando cd nombredirectorio

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:59:00 +0000

Linux Comandos

cd nombredirectorio

Cambia del directorio actual al directorio especificado.

Ejemplo:

cd /etc/postgresql

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Linux Comandos

Comando cp nombrefichero carpetadestino

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:57:00 +0000

Linux Comandos

cp nombrefichero carpetadestino

Copia uno o varios (*) ficheros a la carpeta especificada.

Ejemplo:

cp * /usr/bin

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Linux Comandos

Comando sysctl -a

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:52:00 +0000

Linux Comandos

sysctl -a

kernel.sched_migration_cost = 500000
kernel.sched_nr_migrate = 32
kernel.timer_migration = 1
kernel.sched_rt_period_us = 1000000
kernel.sched_rt_runtime_us = 950000
kernel.sched_compat_yield = 0
kernel.panic = 0
kernel.core_uses_pid = 0
kernel.core_pattern = core
kernel.tainted = 0
kernel.latencytop = 0
kernel.real-root-dev = 0
kernel.print-fatal-signals = 0
kernel.ctrl-alt-del = 0
kernel.ftrace_dump_on_oops = 0
kernel.modprobe = /sbin/modprobe
kernel.modules_disabled = 0
kernel.hotplug =
kernel.sg-big-buff = 32768
kernel.acct = 4 2 30
kernel.sysrq = 1
kernel.cad_pid = 1
kernel.threads-max = 14331
kernel.random.poolsize = 4096
kernel.random.entropy_avail = 3064
kernel.random.read_wakeup_threshold = 64
kernel.random.write_wakeup_threshold = 128
kernel.random.boot_id = a6e1dc-aaf-46f-8a3-2c55e618f
kernel.random.uuid = 71d8483-3e0-4c9-a49-c90bd59b270
kernel.overflowuid = 65534
kernel.overflowgid = 65534
kernel.pid_max = 32768
kernel.panic_on_oops = 0
kernel.printk = 4 4 1 7
kernel.printk_ratelimit = 5
kernel.printk_ratelimit_burst = 10
kernel.ngroups_max = 65536
kernel.unknown_nmi_panic = 0
kernel.nmi_watchdog = 0
kernel.panic_on_unrecovered_nmi = 0
kernel.panic_on_io_nmi = 0
kernel.bootloader_type = 112
kernel.bootloader_version = 0
kernel.kstack_depth_to_print = 24
kernel.io_delay_type = 1
kernel.randomize_va_space = 2
kernel.acpi_video_flags = 0
kernel.softlockup_panic = 0
kernel.softlockup_thresh = 60
kernel.hung_task_panic = 0
kernel.hung_task_check_count = 32768
kernel.hung_task_timeout_secs = 120
kernel.hung_task_warnings = 10
kernel.max_lock_depth = 1024
kernel.poweroff_cmd = /sbin/poweroff
kernel.keys.maxkeys = 200
kernel.keys.maxbytes = 20000
kernel.keys.root_maxkeys = 200
kernel.keys.root_maxbytes = 20000
kernel.slow-work.min-threads = 2
kernel.slow-work.max-threads = 4
kernel.slow-work.vslow-percentage = 50
kernel.perf_counter_paranoid = 1
kernel.perf_counter_mlock_kb = 512
kernel.perf_counter_max_sample_rate = 100000
kernel.ostype = Linux
kernel.osrelease = 2.6.31-19-generic
kernel.version = #56-Ubuntu SMP Thu Jan 28 01:26:53 UTC 2010
kernel.hostname = optenet
kernel.domainname = (none)
kernel.shmmax = 33554432
kernel.shmall = 2097152
kernel.shmmni = 4096
kernel.msgmax = 8192
kernel.msgmni = 1734
kernel.msgmnb = 16384
kernel.sem = 250 32000 32 128
kernel.auto_msgmni = 1
kernel.pty.max = 4096
kernel.pty.nr = 1
vm.overcommit_memory = 0
vm.panic_on_oom = 0
vm.oom_kill_allocating_task = 0
vm.oom_dump_tasks = 0
vm.overcommit_ratio = 50
vm.page-cluster = 3
vm.dirty_background_ratio = 10
vm.dirty_background_bytes = 0
vm.dirty_ratio = 20
vm.dirty_bytes = 0
vm.dirty_writeback_centisecs = 500
vm.dirty_expire_centisecs = 3000
vm.nr_pdflush_threads = 2
vm.swappiness = 60
vm.nr_hugepages = 0
vm.hugetlb_shm_group = 0
vm.hugepages_treat_as_movable = 0
vm.nr_overcommit_hugepages = 0
vm.lowmem_reserve_ratio = 256 32 32
vm.drop_caches = 0
vm.min_free_kbytes = 3798
vm.percpu_pagelist_fraction = 0
vm.max_map_count = 65530
vm.laptop_mode = 0
vm.block_dump = 0
vm.vfs_cache_pressure = 100
vm.legacy_va_layout = 0
vm.stat_interval = 1
vm.mmap_min_addr = 65536
vm.vdso_enabled = 1
vm.highmem_is_dirtyable = 0
vm.scan_unevictable_pages = 0
fs.inode-nr = 32458 11220
dev.cdrom.info = Can play audio: 1
dev.cdrom.info = Can write CD-R: 0
dev.cdrom.info = Can write CD-RW: 0
dev.cdrom.info = Can read DVD: 1
dev.cdrom.info = Can write DVD-R: 0
dev.cdrom.info = Can write DVD-RAM: 0
dev.cdrom.info = Can read MRW: 1
dev.cdrom.info = Can write MRW: 1
dev.cdrom.info = Can write RAM: 1
dev.cdrom.info =
dev.cdrom.info =
dev.cdrom.autoclose = 1
dev.cdrom.autoeject = 0
dev.cdrom.debug = 0
dev.cdrom.lock = 1
dev.cdrom.check_media = 0
dev.parport.default.timeslice = 200
dev.parport.default.spintime = 500
dev.parport.parport0.spintime = 500
dev.parport.parport0.base-addr = 888 1912
dev.parport.parport0.irq = 7
dev.parport.parport0.dma = 3
dev.parport.parport0.modes = PCSPP,TRISTATE,COMPAT,ECP,DMA
dev.parport.parport0.devices.active = none
dev.parport.parport0.devices.lp.timeslice = 200
net.netfilter.nf_log.0 = NONE
net.netfilter.nf_log.1 = NONE
net.netfilter.nf_log.2 = NONE
net.netfilter.nf_log.3 = NONE
net.netfilter.nf_log.4 = NONE
net.netfilter.nf_log.5 = NONE
net.netfilter.nf_log.6 = NONE
net.netfilter.nf_log.7 = NONE
net.netfilter.nf_log.8 = NONE
net.netfilter.nf_log.9 = NONE
net.netfilter.nf_log.10 = NONE
net.netfilter.nf_log.11 = NONE
net.netfilter.nf_log.12 = NONE
net.core.somaxconn = 128
net.core.xfrm_aevent_etime = 10
net.core.xfrm_aevent_rseqth = 2
net.core.xfrm_larval_drop = 1
net.core.xfrm_acq_expires = 30
net.core.wmem_max = 131071
net.core.rmem_max = 131071
net.core.wmem_default = 114688
net.core.rmem_default = 114688
net.core.dev_weight = 64
net.core.netdev_max_backlog = 1000
net.core.message_cost = 5
net.core.message_burst = 10
net.core.optmem_max = 10240
net.core.netdev_budget = 300
net.core.warnings = 1
net.ipv4.route.gc_thresh = 32768
net.ipv4.route.max_size = 524288
net.ipv4.route.gc_min_interval = 0
net.ipv4.route.gc_min_interval_ms = 500
net.ipv4.route.gc_timeout = 300
net.ipv4.route.gc_interval = 60
net.ipv4.route.redirect_load = 5
net.ipv4.route.redirect_number = 9
net.ipv4.route.redirect_silence = 5120
net.ipv4.route.error_cost = 250
net.ipv4.route.error_burst = 1250
net.ipv4.route.gc_elasticity = 8
net.ipv4.route.mtu_expires = 600
net.ipv4.route.min_pmtu = 552
net.ipv4.route.min_adv_mss = 256
net.ipv4.route.secret_interval = 600
net.ipv4.neigh.default.mcast_solicit = 3
net.ipv4.neigh.default.ucast_solicit = 3
net.ipv4.neigh.default.app_solicit = 0
net.ipv4.neigh.default.retrans_time = 100
net.ipv4.neigh.default.base_reachable_time = 30
net.ipv4.neigh.default.delay_first_probe_time = 5
net.ipv4.neigh.default.gc_stale_time = 60
net.ipv4.neigh.default.unres_qlen = 3
net.ipv4.neigh.default.proxy_qlen = 64
net.ipv4.neigh.default.anycast_delay = 100
net.ipv4.neigh.default.proxy_delay = 80
net.ipv4.neigh.default.locktime = 100
net.ipv4.neigh.default.retrans_time_ms = 1000
net.ipv4.neigh.default.base_reachable_time_ms = 30000
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.gc_thresh1 = 128
net.ipv4.neigh.default.gc_thresh2 = 512
net.ipv4.neigh.default.gc_thresh3 = 1024
net.ipv4.neigh.lo.mcast_solicit = 3
net.ipv4.neigh.lo.ucast_solicit = 3
net.ipv4.neigh.lo.app_solicit = 0
net.ipv4.neigh.lo.retrans_time = 100
net.ipv4.neigh.lo.base_reachable_time = 30
net.ipv4.neigh.lo.delay_first_probe_time = 5
net.ipv4.neigh.lo.gc_stale_time = 60
net.ipv4.neigh.lo.unres_qlen = 3
net.ipv4.neigh.lo.proxy_qlen = 64
net.ipv4.neigh.lo.anycast_delay = 100
net.ipv4.neigh.lo.proxy_delay = 80
net.ipv4.neigh.lo.locktime = 100
net.ipv4.neigh.lo.retrans_time_ms = 1000
net.ipv4.neigh.lo.base_reachable_time_ms = 30000
net.ipv4.neigh.eth0.mcast_solicit = 3
net.ipv4.neigh.eth0.ucast_solicit = 3
net.ipv4.neigh.eth0.app_solicit = 0
net.ipv4.neigh.eth0.retrans_time = 100
net.ipv4.neigh.eth0.base_reachable_time = 30
net.ipv4.neigh.eth0.delay_first_probe_time = 5
net.ipv4.neigh.eth0.gc_stale_time = 60
net.ipv4.neigh.eth0.unres_qlen = 3
net.ipv4.neigh.eth0.proxy_qlen = 64
net.ipv4.neigh.eth0.anycast_delay = 100
net.ipv4.neigh.eth0.proxy_delay = 80
net.ipv4.neigh.eth0.locktime = 100
net.ipv4.neigh.eth0.retrans_time_ms = 1000
net.ipv4.neigh.eth0.base_reachable_time_ms = 30000
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_retrans_collapse = 1
net.ipv4.ip_default_ttl = 64
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.ip_nonlocal_bind = 0
net.ipv4.tcp_syn_retries = 5
net.ipv4.tcp_synack_retries = 5
net.ipv4.tcp_max_orphans = 32768
net.ipv4.tcp_max_tw_buckets = 180000
net.ipv4.ip_dynaddr = 0
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_stdurg = 0
net.ipv4.tcp_rfc1337 = 0
net.ipv4.tcp_max_syn_backlog = 1024
net.ipv4.ip_local_port_range = 32768 61000
net.ipv4.igmp_max_memberships = 20
net.ipv4.igmp_max_msf = 10
net.ipv4.inet_peer_threshold = 65664
net.ipv4.inet_peer_minttl = 120
net.ipv4.inet_peer_maxttl = 600
net.ipv4.inet_peer_gc_mintime = 10
net.ipv4.inet_peer_gc_maxtime = 120
net.ipv4.tcp_orphan_retries = 0
net.ipv4.tcp_fack = 1
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_ecn = 2
net.ipv4.tcp_dsack = 1
net.ipv4.tcp_mem = 82560 110080 165120
net.ipv4.tcp_wmem = 4096 16384 3522560
net.ipv4.tcp_rmem = 4096 87380 3522560
net.ipv4.tcp_app_win = 31
net.ipv4.tcp_adv_win_scale = 2
net.ipv4.tcp_tw_reuse = 0
net.ipv4.tcp_frto = 2
net.ipv4.tcp_frto_response = 0
net.ipv4.tcp_low_latency = 0
net.ipv4.tcp_no_metrics_save = 0
net.ipv4.tcp_moderate_rcvbuf = 1
net.ipv4.tcp_tso_win_divisor = 3
net.ipv4.tcp_congestion_control = cubic
net.ipv4.tcp_abc = 0
net.ipv4.tcp_mtu_probing = 0
net.ipv4.tcp_base_mss = 512
net.ipv4.tcp_workaround_signed_windows = 0
net.ipv4.tcp_dma_copybreak = 4096
net.ipv4.tcp_slow_start_after_idle = 1
net.ipv4.cipso_cache_enable = 1
net.ipv4.cipso_cache_bucket_size = 10
net.ipv4.cipso_rbm_optfmt = 0
net.ipv4.cipso_rbm_strictvalid = 1
net.ipv4.tcp_available_congestion_control = cubic reno
net.ipv4.tcp_allowed_congestion_control = cubic reno
net.ipv4.tcp_max_ssthresh = 0
net.ipv4.udp_mem = 82560 110080 165120

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Linux Comandos

Comando ulimit -a

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:50:00 +0000

Linux Comandos

ulimit -a (equipo con GNU Linux Ubuntu)

core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 20
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

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Linux Comandos

Comando id root.

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:49:00 +0000

Linux Comandos

id root
uid=0(root) gid=0(root) grupos=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)

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Linux Comandos

Comando lsusb -tv

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:49:00 +0000

Linux Comandos

lsusb -tv
/: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/8p, 480M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
|__ Port 1: Dev 3, If 0, Class=HID, Driver=usbhid, 1.5M

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Linux Comandos

Comando lspci -tv

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:48:00 +0000

Linux Comandos

lspci -tv
-[0000:00]-+-00.0 Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub
+-01.0-[0000:01]----00.0 nVidia Corporation G72M [Quadro NVS 110M/GeForce Go 7300]
+-1b.0 Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller
+-1c.0-[0000:02]----00.0 Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller
+-1c.3-[0000:03]----00.0 Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection
+-1d.0 Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1
+-1d.1 Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2
+-1d.2 Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3
+-1d.3 Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4
+-1d.7 Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller
+-1e.0-[0000:04-08]--+-01.0 Ricoh Co Ltd RL5c476 II
| +-01.1 Ricoh Co Ltd R5C552 IEEE 1394 Controller
| +-01.2 Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter
| -01.3 Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter
+-1f.0 Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge
-1f.1 Intel Corporation 82801G (ICH7 Family) IDE Controller

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Linux Comandos

Comando hdparm -tT /dev/sda

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:47:00 +0000

Linux Comandos

hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 4284 MB in 2.00 seconds = 2142.42 MB/sec
Timing buffered disk reads: 64 MB in 3.10 seconds = 20.67 MB/sec

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Linux Comandos

Comando grep "model name" /proc/cpuinfo

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:46:00 +0000

Linux Comandos

grep "model name" /proc/cpuinfo
model name: Intel(R) Core (TM)2 Quad CPU Q9400 @ 2.66GHz

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Linux Comandos

Comando last reboot

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:44:00 +0000

Linux Comandos

last reboot
reboot system boot 2.6.24-19-server Sat Jan 10 02:55 - 06:15 (03:20)
reboot system boot 2.6.24-19-server Sat Jan 10 01:08 - 02:54 (01:45)
wtmp begins Sat Jan 10 01:08:39 2009

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Linux Comandos

Comando where is.

noreply@blogger.com (Eric) — Sat, 29 Oct 2011 02:43:00 +0000

Linux Comandos

whereis man

man: /usr/bin/man
/usr/local/man
/usr/share/man
/usr/share/man/man1/man.1.gz
/usr/share/man/man7/man.7.gz

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Linux Comandos

Comando ln

noreply@blogger.com (Eric) — Sat, 22 Oct 2011 05:53:00 +0000

Linux Comandos

ln
Descripción: =link. para crear enlaces, accesos directos.
Ejemplos: ln -s /directorio enlace

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Linux Comandos

Comando tail

noreply@blogger.com (Eric) — Sat, 22 Oct 2011 05:53:00 +0000

Linux Comandos

tail
Descripción: muestra el final (10 lineas) de un fichero.
Ejemplos:tail -f /var/log/maillog, tail -100 /var/log/maillog | more

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Linux Comandos

Comando sort

noreply@blogger.com (Eric) — Sat, 22 Oct 2011 05:50:00 +0000

Linux Comandos

sort
Descripción: ordena el contenido de un fichero.
Ejemplos: cat /etc/numeros | sort, ls | sort

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Linux Comandos

Comando mail

noreply@blogger.com (Eric) — Sat, 22 Oct 2011 05:38:00 +0000

Linux Comandos

mail
Descripción: envio y lectura de correo electronico.
Ejemplos: mail pepe@ibercom.com < fichero, mail -v pepe@ibercom.com < fichero

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Linux Comandos

Comando whois

noreply@blogger.com (Eric) — Sat, 22 Oct 2011 05:36:00 +0000

Linux Comandos

whois
Descripción: whois de dominios.
Ejemplos: whois ibercom.com

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Linux Comandos

Comando lynx

noreply@blogger.com (Eric) — Sat, 22 Oct 2011 05:34:00 +0000

Linux Comandos

lynx
Descripción: navegador web con opciones de ftp, https.
Ejemplos: lynx www.ibercom.com, lynx --source http://www.ibercom.com/script.sh | sh

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Linux Comandos