Use basic Linux utilities to list file names and their contents.
Display file names including their contents in /proc/pressure/ directory.
$ awk '{printf "%s^%s\n", FILENAME, $0}' /proc/pressure/* | column -s "^" -t/proc/pressure/cpu some avg10=1.52 avg60=1.56 avg300=1.88 total=9032793664 /proc/pressure/io some avg10=0.00 avg60=0.00 avg300=0.00 total=1257329887 /proc/pressure/io full avg10=0.00 avg60=0.00 avg300=0.00 total=1047421540 /proc/pressure/memory some avg10=0.00 avg60=0.00 avg300=0.00 total=66419711 /proc/pressure/memory full avg10=0.00 avg60=0.00 avg300=0.00 total=49989988
Use sudo to find temp files inside /sys/class/thermal directory to display file names and the first line of their contents.
$ sudo bash -c "awk 'FNR==1{printf \"%s^%s\n\", FILENAME, \$0}' \$(find /sys/class/thermal/ -maxdepth 2 -follow -name temp 2>/dev/null) | column -s "^" -t"/sys/class/thermal/thermal_zone2/temp 47000 /sys/class/thermal/thermal_zone0/temp 27800 /sys/class/thermal/thermal_zone1/temp 29800
Use sudo to display file names including the first line of their contents in /sys/class/net/eno1/ directory.
$ sudo bash -c "awk 'FNR==1{printf \"%s^%s\n\", FILENAME, \$0}' /sys/class/net/eno1/* 2>/dev/null | column -s "^" -t"/sys/class/net/eno1/addr_assign_type 0 /sys/class/net/eno1/address f8:b1:56:41:3b:51 /sys/class/net/eno1/addr_len 6 /sys/class/net/eno1/broadcast ff:ff:ff:ff:ff:ff /sys/class/net/eno1/carrier 1 /sys/class/net/eno1/carrier_changes 8 /sys/class/net/eno1/carrier_down_count 4 /sys/class/net/eno1/carrier_up_count 4 /sys/class/net/eno1/dev_id 0x0 /sys/class/net/eno1/dev_port 0 /sys/class/net/eno1/dormant 0 /sys/class/net/eno1/duplex full /sys/class/net/eno1/flags 0x1003 /sys/class/net/eno1/gro_flush_timeout 0 /sys/class/net/eno1/ifindex 2 /sys/class/net/eno1/iflink 2 /sys/class/net/eno1/link_mode 0 /sys/class/net/eno1/mtu 1500 /sys/class/net/eno1/name_assign_type 4 /sys/class/net/eno1/netdev_group 0 /sys/class/net/eno1/operstate up
It comes in handy at times.
