Explication détaillée de la commande rev

rev(参数)

文件：指定要反序显示内容的文件。

[root@localhost ~]# cat iptables.bak 
# Generated by iptables-save v1.3.5 on Thu Dec 26 21:25:15 2013 
*filter 
:INPUT DROP [48113:2690676] 
:FORWARD accept [0:0] 
:OUTPUT ACCEPT [3381959:1818595115] 
-A INPUT -i lo -j ACCEPT 
-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT 
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT 
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 
-A INPUT -p icmp -j ACCEPT 
-A OUTPUT -o lo -j ACCEPT 
COMMIT 
# Completed on Thu Dec 26 21:25:15 2013 
[root@localhost ~]# rev iptables.bak 
3102 51:52:12 62 ceD uhT no 5.3.1v evas-selbatpi yb detareneG # 
retlif* 
]6760962:31184[ PORD TUPNI: 
]0:0[ TPECCA DRAWROF: 
]5115958181:9591833[ TPECCA TUPTUO: 
TPECCA j- ol i- TUPNI A- 
TPECCA j- 22 tropd-- pct m- pct p- 
TUPNI A- TPECCA j- 08 tropd-- pct m- pct p- TUPNI A- 
TPECCA j- DEHSILBATSE,DETALER etats-- etats m- TUPNI A- 
TPECCA j- pmci p- TUPNI A- 
TPECCA j- ol o- TUPTUO A- 
TIMMOC 
3102 51:52:12 62 ceD uhT no detelpmoC #