1 cat、more、less
- cat
# 将标准输入写入a.txt
cat > a.txt
# 非打印字符(nonprinting)/EOL/TAB
cat -vET a.txt
cat -A a.txt # 等同于-vET
# 显示行号(number lines)/压缩空行(squeeze multiple blank lines into one)
cat -ns a.txt
- more
# 空格前进,"q"退出
# 清屏打印
more -p a.txt
# 3行一屏,压缩空行
more -3s a.txt
# 从第3行打印
more +3 a.txt
# 从发现"test"打印
more +/test a.txt
- less
# enter前进,"q"退出,vim导航命令
less a.txt
diff
diff a.txt b.txt
# "1c1" "3c3,6" "5a4,8" "4,6d3"
# compare append delete,"3a4,6"表示a.txt的5行和b.txt的3行对应,b.txt新增了第4-8行的内容
diff a.txt b.txt -y -W 100 --suppress-common-lines
# 仅显示不同的行,分两列,列宽100
diff a.txt b.txt -iEZbwB
# 忽略大小写、tab键的不同、尾部空格、空格个数改变、所有空格、空行
diff a/ b/ -S b.txt -q --ingore-file-name-case
# 从b.txt开始比较a目录和b目录,忽略文件名大小写,仅输出不同的文件名