Linux Filesystem
- find command:
- Search for multiple file names:
find . -type f \( -name "*.png" -o -name "*.jpg" -o -name "*.deb" -o -name ".pdf" \) - Follow symlinks:
find -L $COBDIR -iname ... - find with compex exec:
find . -iname console.log.tr4 -exec sh -c "echo {} && grep 'CASSI5030I PLTPI Phase 2 List(T1) Processing Completed' {} | wc -l" \;
- Search for multiple file names:
- List symlinks:
find -type l - Mount cdrom using /etc/fstab:
/home/hub/Downloads/rhel-8.1-x86_64-dvd.iso /media/cdrom/ iso9660 loop,ro 0 0 - List symbols of binary:
# nm -D /usr/pgsql-10/lib/libpq.so.5.10 | grep PQconninfo 0000000000010150 T PQconninfo 0000000000010220 T PQconninfoFree 00000000000118b0 T PQconninfoParse - rsync
- Exclude directory:
rsync -avz --exclude VirtualBox_VMs /home/jcdc .(See here)
- Exclude directory:
- Determine file creation time (see also here)
- Method 1: “stat filename” - But even on my ext4 filesystem (RH Linux) the “Birth” value was unfortunately blank (apparently, it is down to the kernel if the “Birth” value is populated):
[wibble]stat myfile.txt File: '/home/fred/myfile.txt' Size: 329066 Blocks: 648 IO Block: 4096 regular file Device: 802h/2050d Inode: 2229605 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 1000/ hub) Gid: ( 1000/ hub) Access: 2023-09-20 09:58:38.000000000 +0100 Modify: 2023-09-20 09:58:38.000000000 +0100 Change: 2023-09-20 10:06:05.316755558 +0100 Birth: - - Method 2: “debugfs” (Note this must be run as root) - looks for the “crtime” value (not “ctime”!):
[wibble]asroot debugfs -R 'stat myfile.txt' /dev/sda2 debugfs 1.42.9 (28-Dec-2013) Inode: 2229605 Type: regular Mode: 0644 Flags: 0x80000 Generation: 2201300265 Version: 0x00000000:00000001 User: 1000 Group: 1000 Size: 329066 File ACL: 0 Directory ACL: 0 Links: 1 Blockcount: 648 Fragment: Address: 0 Number: 0 Size: 0 ctime: 0x650ab5fd:4b853998 -- Wed Sep 20 10:06:05 2023 atime: 0x650ab43e:00000000 -- Wed Sep 20 09:58:38 2023 mtime: 0x650ab43e:00000000 -- Wed Sep 20 09:58:38 2023 crtime: 0x650ab5fd:4b0b269c -- Wed Sep 20 10:06:05 2023
- Method 1: “stat filename” - But even on my ext4 filesystem (RH Linux) the “Birth” value was unfortunately blank (apparently, it is down to the kernel if the “Birth” value is populated):
Written on October 13, 2020