查找文檔幫助的幾種辦法

#man page普通用法
man 5 proc
#man page關鍵詞查找
$ man -k semget
semget               (2)  - get a semaphore set identifier
semget               (3p)  - get set of XSI semaphores
#man page全文查找
$man -w -K SEMMNI
/usr/share/man/man5/proc.5.gz
/usr/share/man/man2/semget.2.gz
#/usr/share/doc全文查找
$yum install kernel-doc
$grep -ri isolcpus /usr/share/doc/kernel-doc*/Documentation/.* 
/usr/share/doc/kernel-doc-2.6.18/Documentation/kernel-parameters.txt:   isolcpus=       [KNL,SMP] Isolate CPUs from the general scheduler.
#查找安裝包文檔位置
$rpm -ql valgrind | grep /usr/share
..
/usr/share/doc/valgrind-3.5.0/html/index.html
..
$elinks /usr/share/doc/valgrind-3.5.0/html/index.html