統計文件中帶有某些關鍵字的行出現的次數 grep+wcspa
grep xxx /var/run/dmesg.boot | wc -lit
-w選項指定要搜索的單詞
test
grep -w 'seven' test.txtimport
搜以特定字符開頭(結尾)的單詞awk
grep '\<seven' test.txtstream
grep 'seven\>' test.txt搜索
搜以特定字符開頭(結尾)的行grep
grep '^seven' test.txtim
grep 'seven$' test.txt統計
顯示目標行的上下文
grep -C 1 twentyseven test.txt
grep -A 1 -B 1
grep "twenty[1-4]" test.txt
不顯示grep
ps -afx | grep ttyv | grep -v grep
ps aux|grep qemu|awk '{print $2}'|xargs kill -9