From c054de92285417e51ad0df8871168eb85e58ee8d Mon Sep 17 00:00:00 2001 From: Wenchi Pan Date: Wed, 21 Feb 2024 23:00:58 +0800 Subject: [PATCH] Site updated: 2024-02-21 23:00:58 --- 2024/02/08/windows-dirs-structure/index.html | 4 +-- 2024/02/20/linux-common-command/index.html | 37 ++++++++++---------- archives/2024/02/index.html | 2 +- archives/2024/index.html | 2 +- archives/index.html | 2 +- index.html | 21 ++++++----- 6 files changed, 33 insertions(+), 35 deletions(-) diff --git a/2024/02/08/windows-dirs-structure/index.html b/2024/02/08/windows-dirs-structure/index.html index 7fe92ba..853c654 100644 --- a/2024/02/08/windows-dirs-structure/index.html +++ b/2024/02/08/windows-dirs-structure/index.html @@ -246,8 +246,8 @@

%UserProfile%目录

-
diff --git a/2024/02/20/linux-common-command/index.html b/2024/02/20/linux-common-command/index.html index edf92ab..cba15fc 100644 --- a/2024/02/20/linux-common-command/index.html +++ b/2024/02/20/linux-common-command/index.html @@ -19,15 +19,15 @@ - + - + - + - + @@ -36,10 +36,10 @@ - + -linux-common-command | Black的博客 +Linux Common Commands | Black的博客 @@ -104,7 +104,7 @@
-
  1. 1. Linux common commands
    1. 1.1. See the log from systemd service: journalctl
      1. 1.1.1. Common usage
      2. 1.1.2. Show colorful output:
      3. 1.1.3. Continuously print new logs
      4. 1.1.4. Restrict the output to latest run:
    2. 1.2. Python(conda) in systemd service
    3. 1.3. Shell script
+
  1. 1. See the log from systemd service: journalctl
    1. 1.1. Common usage
    2. 1.2. Show colorful output:
    3. 1.3. Continuously print new logs
    4. 1.4. Restrict the output to latest run:
  2. 2. Python(conda) in systemd service
  3. 3. Shell script
@@ -166,12 +166,12 @@

- linux-common-command + Linux Common Commands

@@ -189,7 +189,7 @@

更新于 - + @@ -201,22 +201,21 @@

-

Linux common commands

-

See the log from systemd service: journalctl

-

Common usage

+

See the log from systemd service: journalctl

+

Common usage

journalctl -u UnitName --since today

Use right arrow key to scroll right. Or press -S and Enter in less to toggle word wrap.

Also see DigitalOcean's website for more usages.

-

Show colorful output:

+

Show colorful output:

If the original daemon output is already colorized, but the colors are being lost when using journalctl, the --output cat option will restore them. See the manual for more details. >-o, --output= > Controls the formatting of the journal entries that are shown. Takes one of the following > options:

cat generates a very terse output, only showing the actual message of each journal entry with no metadata, not even a timestamp.

-

Continuously print new logs

+

Continuously print new logs

journalctl --follow --no-tail is used when you want all previous lines (better than -n 100000 or arbitrary big line count)

-

Restrict the output to latest run:

+

Restrict the output to latest run:

TLDR; Use the one liner: - System level: 

1
journalctl _SYSTEMD_INVOCATION_ID=`systemctl show -p InvocationID --value service_name.service`
- User level: 
1
journalctl _SYSTEMD_INVOCATION_ID=`systemctl show -p InvocationID --value service_name.service --user`

-

Python(conda) in systemd service

+

Python(conda) in systemd service

Create a systemd Service File: Create a .service file (e.g., my_server.service) in a location of your choice (usually /etc/systemd/system/ for system-level services or ~/.config/systemd/user/ for user-level services). Open the file for editing.

Define the Service:

    @@ -226,9 +225,9 @@

    Python(conda) in systemd service

  • If you’re running this as a user-level service, use: 

    1
    2
    systemctl --user enable my_server.service
    systemctl --user start my_server.service

    • -

  • For system-level services, use: 

    1
    2
    sudo systemctl enable my_server.service
    sudo systemctl start my_server.service
    ### Activate a conda env in systemd service https://github.com/mmaz/systemd-conda

    • +

  • For system-level services, use: 

    1
    2
    sudo systemctl enable my_server.service
    sudo systemctl start my_server.service
    ## Activate a conda env in systemd service https://github.com/mmaz/systemd-conda

-

Shell script

+

Shell script

Accessing Individual Arguments: To access specific arguments, use the following variables: - $0: The script name itself. - $1, $2, $3, …: The first, second, third, and subsequent arguments. - $#: The total number of arguments. - \(@: All arguments as a list. - \$\): The process ID of the script. - $?: The exit code of the last executed command.

Example Script: 

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#!/bin/sh
echo "Script Name: $0"
echo "First Parameter: $1"
echo "Second Parameter: $2"
echo "All Arguments: $@"
echo "Total Number of Parameters: $#"
echo "Process ID: $$"
echo "Exit Code: $?"

diff --git a/archives/2024/02/index.html b/archives/2024/02/index.html index c00724f..edc80b6 100644 --- a/archives/2024/02/index.html +++ b/archives/2024/02/index.html @@ -168,7 +168,7 @@

Black的博客

diff --git a/archives/2024/index.html b/archives/2024/index.html index d26b4f0..a0fc211 100644 --- a/archives/2024/index.html +++ b/archives/2024/index.html @@ -168,7 +168,7 @@

Black的博客

diff --git a/archives/index.html b/archives/index.html index 1456f3b..bb8b2b9 100644 --- a/archives/index.html +++ b/archives/index.html @@ -168,7 +168,7 @@

Black的博客

diff --git a/index.html b/index.html index b4f6c3d..ea95a57 100644 --- a/index.html +++ b/index.html @@ -167,7 +167,7 @@

Black的博客

- +

@@ -185,7 +185,7 @@

更新于 - + @@ -198,22 +198,21 @@

-

Linux common commands

-

See the log from systemd service: journalctl

-

Common usage

+

See the log from systemd service: journalctl

+

Common usage

journalctl -u UnitName --since today

Use right arrow key to scroll right. Or press -S and Enter in less to toggle word wrap.

Also see DigitalOcean's website for more usages.

-

Show colorful output:

+

Show colorful output:

If the original daemon output is already colorized, but the colors are being lost when using journalctl, the --output cat option will restore them. See the manual for more details. >-o, --output= > Controls the formatting of the journal entries that are shown. Takes one of the following > options:

cat generates a very terse output, only showing the actual message of each journal entry with no metadata, not even a timestamp.

-

Continuously print new logs

+

Continuously print new logs

journalctl --follow --no-tail is used when you want all previous lines (better than -n 100000 or arbitrary big line count)

-

Restrict the output to latest run:

+

Restrict the output to latest run:

TLDR; Use the one liner: - System level: 

1
journalctl _SYSTEMD_INVOCATION_ID=`systemctl show -p InvocationID --value service_name.service`
- User level: 
1
journalctl _SYSTEMD_INVOCATION_ID=`systemctl show -p InvocationID --value service_name.service --user`

-

Python(conda) in systemd service

+

Python(conda) in systemd service

Create a systemd Service File: Create a .service file (e.g., my_server.service) in a location of your choice (usually /etc/systemd/system/ for system-level services or ~/.config/systemd/user/ for user-level services). Open the file for editing.

Define the Service:

    @@ -223,9 +222,9 @@

    Python(conda) in systemd service

  • If you’re running this as a user-level service, use: 

    1
    2
    systemctl --user enable my_server.service
    systemctl --user start my_server.service

    • -

  • For system-level services, use: 

    1
    2
    sudo systemctl enable my_server.service
    sudo systemctl start my_server.service
    ### Activate a conda env in systemd service https://github.com/mmaz/systemd-conda

    • +

  • For system-level services, use: 

    1
    2
    sudo systemctl enable my_server.service
    sudo systemctl start my_server.service
    ## Activate a conda env in systemd service https://github.com/mmaz/systemd-conda

-

Shell script

+

Shell script

Accessing Individual Arguments: To access specific arguments, use the following variables: - $0: The script name itself. - $1, $2, $3, …: The first, second, third, and subsequent arguments. - $#: The total number of arguments. - \(@: All arguments as a list. - \$\): The process ID of the script. - $?: The exit code of the last executed command.

Example Script: 

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#!/bin/sh
echo "Script Name: $0"
echo "First Parameter: $1"
echo "Second Parameter: $2"
echo "All Arguments: $@"
echo "Total Number of Parameters: $#"
echo "Process ID: $$"
echo "Exit Code: $?"