Linux 常用命令 §

Run history number(e.g. 53)

!53

Run past command that began with (e.g. cat filename)

!cat
# or
!c
# run cat filename again

Bash globbing

# '*' serves as a "wild card" for filename expansion.
/etc/pa*wd    #/etc/passwd
 
# '?' serves as a single-character "wild card" for filename expansion.
/b?n/?at      #/bin/cat
 
# '[]' serves to match the character from a range.
ls -l [a-z]*   #list all files with alphabet in its filename.
 
# '{}' can be used to match filenames with more than one patterns
ls *.{sh,py}   #list all .sh and .py files

Copy and overwrite the target file

/bin/cp -rf xxxx

Get local ip

ifconfig -a | grep inet | grep -v 127.0.0.1 | grep -v inet6 | awk '{print $2}' | tr -d "addr:"

Find the process id by name

ps -ef | grep elasticsearch | grep -v "grep" | awk '{print $2}' | head -n 1