From 3b226d19bb19a87eb565f3e1d16e14f446b56e76 Mon Sep 17 00:00:00 2001 From: johannst Date: Tue, 27 Aug 2024 22:25:00 +0000 Subject: deploy: 9b47b98b7c5efce0bf50d57aa5d7e374bcbabf23 --- linux/acl.html | 2 +- linux/coredump.html | 2 +- linux/cpufreq.html | 252 +++++++++++++++++++++++++++++++++++++++++ linux/cryptsetup.html | 2 +- linux/cups.html | 291 ++++++++++++++++++++++++++++++++++++++++++++++++ linux/index.html | 4 +- linux/input.html | 2 +- linux/ptrace_scope.html | 2 +- linux/swap.html | 2 +- linux/systemd.html | 2 +- linux/zfs.html | 6 +- 11 files changed, 556 insertions(+), 11 deletions(-) create mode 100644 linux/cpufreq.html create mode 100644 linux/cups.html (limited to 'linux') diff --git a/linux/acl.html b/linux/acl.html index c1c69f9..ca346a8 100644 --- a/linux/acl.html +++ b/linux/acl.html @@ -88,7 +88,7 @@

diff --git a/linux/coredump.html b/linux/coredump.html index fcc7d06..4aa0563 100644 --- a/linux/coredump.html +++ b/linux/coredump.html @@ -88,7 +88,7 @@

diff --git a/linux/cpufreq.html b/linux/cpufreq.html new file mode 100644 index 0000000..bc4049c --- /dev/null +++ b/linux/cpufreq.html @@ -0,0 +1,252 @@ + + + + + + cpufreq - Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

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cpufreq

The sysfs interface to cpu frequency settings and current state.

/sys/devices/system/cpu/cpu*/cpufreq/
+

cpupower(1)

A CLI interface to peek and poke the cpu frequency settings.

# Show current frequency of all cores.
+cpupower -c all frequency-info -f -m
+
+# Show currently set frequency governor.
+cpupower -c all frequency-info -p
+
+# List available frequency governors.
+cpupower -c all frequency-info -g
+
+# Change frequency governor to POWERSAVE (eg).
+cpupower -c all frequency-set -g powersave
+

Example

Watch cpu frequency.

watch -n1 "cpupower -c all frequency-info -f -m | xargs -n2 -d'\n'"
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+ + diff --git a/linux/cryptsetup.html b/linux/cryptsetup.html index eaa6ca2..9e02817 100644 --- a/linux/cryptsetup.html +++ b/linux/cryptsetup.html @@ -88,7 +88,7 @@

diff --git a/linux/cups.html b/linux/cups.html new file mode 100644 index 0000000..81a879a --- /dev/null +++ b/linux/cups.html @@ -0,0 +1,291 @@ + + + + + + cups - Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

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cups(1)

Discover

# List available printer driver.
+lpinfo -m
+
+# List available printer devices (connected + network).
+lpinfo -v
+

Install printer

# Add device with PRINTER name, practically all modern network printer use the
+# everywhere driver.
+lpadmin -p PRINTER -m everywhere -v DEVICE_URI
+
+# Delete named printer.
+lpadmin -x PRINTER
+

Printer & Printing options

# List printer options.
+# CHECK printer-make-and-model
+lpoptions -p Brother_MFC_L2750DW_series
+# List printing options.
+lpoptions -p Brother_MFC_L2750DW_series -l
+
+# Set the default printer (stored in ~/.cups/lpoptions).
+lpoptions -d Brother_MFC_L2750DW_series
+

Inspect installed printer.

# List default printer.
+lpstat -d
+# List installed printer (-l for longer output).
+lpstat -p
+# List printer accepting state.
+lpstat -a
+# List printer and the attached device (eg device uri).
+lpstat -v
+
+# List all states at once.
+lpstat -t
+

Print jobs

# Create print job.
+lp -d PRINTER FILE
+    -n NUM                           number of copies
+    -P PAGE_LIST                     pages to print (eg 1,3-5,10)
+    -o media=a4                      paper format
+    -o number-up={2|4|6|9|16}        input pages per output page
+    -o sides=one-sided               print front-page only
+    -o sides=two-sided-long-edge     print duplex
+
+# Remove pending print job.
+lprm JOOBID
+

Control printer

# Enable/disable printer.
+cupsenable PRINTER
+cupsdisable PRINTER
+
+# Accept/rejects jobs for printer.
+cupsaccept PRINTER
+cupsreject PRINTER
+

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+ + diff --git a/linux/index.html b/linux/index.html index a65e2c3..9c20283 100644 --- a/linux/index.html +++ b/linux/index.html @@ -88,7 +88,7 @@