Update cheatsheets

tldr/cpio

@@ -7,7 +7,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 > Copy files in and out of archives.
 > Supports the following archive formats: cpio's custom binary, old ASCII, new ASCII, crc, HPUX binary, HPUX old ASCII, old tar, and POSIX.1 tar.
-> More information: <https://www.gnu.org/software/cpio>.
+> More information: <https://www.gnu.org/software/cpio/manual/cpio.html#Invoking-cpio>.
 
 - Take a list of file names from `stdin` and add them onto an archive (copy-[o]ut) in cpio's binary forma:
 

tldr/g++

@@ -7,7 +7,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 > Compile C++ source files.
 > Part of GCC (GNU Compiler Collection).
-> More information: <https://gcc.gnu.org>.
+> More information: <https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html>.
 
 - Compile a source code file into an executable binary:
 

tldr/gcal

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # gcal
 
 > Display calendar.
-> More information: <https://www.gnu.org/software/gcal>.
+> More information: <https://www.gnu.org/software/gcal/manual/gcal.html#Invoking-Gcal>.
 
 - Display calendar for the current month:
 

tldr/gcc

@@ -7,7 +7,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 > Preprocess and compile C and C++ source files, then assemble and link them together.
 > Part of GCC (GNU Compiler Collection).
-> More information: <https://gcc.gnu.org>.
+> More information: <https://gcc.gnu.org/onlinedocs/gcc/>.
 
 - Compile multiple source files into an executable:
 

tldr/gdb

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # gdb
 
 > The GNU Debugger.
-> More information: <https://www.gnu.org/software/gdb>.
+> More information: <https://sourceware.org/gdb/current/onlinedocs/gdb#Invocation>.
 
 - Debug an executable:
 

tldr/git-help

@@ -22,7 +22,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 - List the available guides:
 
-`git help {{[-g|--guide]}}`
+`git help {{[-g|--guides]}}`
 
 - List all possible configuration variables:
 

tldr/guile

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # guile
 
 > Guile Scheme interpreter.
-> More information: <https://www.gnu.org/software/guile>.
+> More information: <https://www.gnu.org/software/guile/manual/guile.html#Invoking-Guile>.
 
 - Start a REPL (interactive shell):
 

tldr/help2man

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # help2man
 
 > Produce simple man pages from an executable's `--help` and `--version` output.
-> More information: <https://www.gnu.org/software/help2man>.
+> More information: <https://www.gnu.org/software/help2man/#Invoking-help2man>.
 
 - Generate a man page for an executable:
 

tldr/linux/links

@@ -5,7 +5,8 @@ source: https://github.com/tldr-pages/tldr.git
 ---
 # links
 
-> Command-line web browser.
+> Command-line text-only web browser.
+> See also: `links2'.
 > More information: <http://links.twibright.com/user_en.html#subch-browser_calibration>.
 
 - Visit a website:

tldr/linux/links2

@@ -5,7 +5,7 @@ source: https://github.com/tldr-pages/tldr.git
 ---
 # links2
 
-> Command-line web browser.
+> Command-line web browser with optional graphics support.
 > See also: `links`.
 > More information: <http://links.twibright.com/user_en.html#subch-browser_calibration>.
 

tldr/linux/systemctl-show-environment

@@ -0,0 +1,17 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemctl show-environment
+
+> Display systemd environment blocks.
+> More information: <https://www.freedesktop.org/software/systemd/man/latest/systemctl.html#show-environment>.
+
+- Display the environment block for the system:
+
+`systemctl show-environment`
+
+- Display the environment block for the current user:
+
+`systemctl show-environment --user`

tldr/linux/zile

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # zile
 
 > A lightweight clone of the Emacs text editor.
-> More information: <https://www.gnu.org/software/zile/>.
+> More information: <https://manned.org/zile>.
 
 - Start a buffer for temporary notes, which won't be saved:
 

tldr/lzip

@@ -7,7 +7,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 > A lossless data compressor with a user interface similar to `gzip` or `bzip2`.
 > Lzip uses a simplified form of the "Lempel-Ziv-Markovchain-Algorithm" (LZMA) stream format and provides 3-factor integrity checking to maximize interoperability and optimize safety.
-> More information: <https://www.nongnu.org/lzip>.
+> More information: <https://www.nongnu.org/lzip/manual/lzip_manual.html#Invoking-lzip>.
 
 - Archive a file, replacing it with with a compressed version:
 

tldr/m4

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # m4
 
 > Macro processor.
-> More information: <https://www.gnu.org/software/m4>.
+> More information: <https://www.gnu.org/software/m4/manual/m4.html#Invoking-m4>.
 
 - Process macros in a file:
 

tldr/parallel

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # parallel
 
 > Run commands on multiple CPU cores.
-> More information: <https://www.gnu.org/software/parallel>.
+> More information: <https://www.gnu.org/software/parallel/man.html>.
 
 - Gzip several files at once, using all cores:
 

tldr/tar

@@ -7,7 +7,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 > Archiving utility.
 > Often combined with a compression method, such as `gzip` or `bzip2`.
-> More information: <https://www.gnu.org/software/tar>.
+> More information: <https://www.gnu.org/software/tar/manual/tar.html>.
 
 - [c]reate an archive and write it to a [f]ile:
 

tldr/units

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # units
 
 > Convert between two units of measure.
-> More information: <https://www.gnu.org/software/units/>.
+> More information: <https://www.gnu.org/software/units/manual/units.html>.
 
 - Run in interactive mode: