shell 取文件第 N 行方法
取文件第一行:
head -1 /var/lib/mysql/binlog.index
取文件第二行:
head -2 /var/lib/mysql/binlog.index | tail -n 1
取文件倒数第一行:
tail /var/lib/mysql/binlog.index -n 1
取文件倒数第二行:
tail /var/lib/mysql/binlog.index -n 2 | head -1
取文件第一行:
head -1 /var/lib/mysql/binlog.index
取文件第二行:
head -2 /var/lib/mysql/binlog.index | tail -n 1
取文件倒数第一行:
tail /var/lib/mysql/binlog.index -n 1
取文件倒数第二行:
tail /var/lib/mysql/binlog.index -n 2 | head -1