cat misc.
cat xxx | more
cat xxx | less
cat > xxx , create a file xxx
cat -n xxx | more with line number information.
cat aaa.txt >> bbb.txt, the aaa.txt will be appened to bbb.txt
tail a file with auto update when file change
tail -f /var/log/syslog
makefile with detail commands infomation
make V = 1 , which will show the detailed commands
To switch root user
sudo su switch to root user
using exit to go back to login user
To check which driver is mounting for CD-ROM
just typeing mount in terminate
/dev/sda2 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/cgroup type tmpfs (rw) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /sys/firmware/efi/efivars type efivarfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755) none on /sys/fs/pstore type pstore (rw) /dev/sda1 on /boot/efi type vfat (rw) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd) gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=zjb) /dev/sr0 on /media/zjb/UDF Volume type udf (ro,nosuid,nodev,uid=1000,gid=1000,iocharset=utf8,umask=0077,uhelper=udisks2)
To create ISO for CD-ROM
dd if=source of=destination
example, dd if=/dev/sr0 of=windows.iso
To install .deb file
sudo dpkg -i /path/to/deb/file
sudo apt install ./name.deb
source bash_file
source is a Unix command that evaluates the file following the command, as a list of commands, executed in the current context
lz4c not found
apt-get install liblz4-tool
apt-get install mtd-utils
libncurses5-dev : Developer’s libraries for ncurses
libncursesw5-dev : Developer’s libraries for ncursesw
原文：https://www.cnblogs.com/zjbfvfv/p/10350348.html