diff --git a/tldr/caller b/tldr/caller
new file mode 100644
index 00000000..af2e7d0a
--- /dev/null
+++ b/tldr/caller
@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# caller
+
+> Print function context.
+> More information: <https://www.gnu.org/software/bash/manual/bash.html#index-caller>.
+
+- Print the line and filename where the current function was called:
+
+`caller`
+
+- Print the line, function and filename where the current function was called:
+
+`caller 0`
+
+- Print the line, the function name and the filename of a function call `n` frames back:
+
+`caller {{n}}`
diff --git a/tldr/linux/coredumpctl b/tldr/linux/coredumpctl
index cfe7cd92..71049896 100644
--- a/tldr/linux/coredumpctl
+++ b/tldr/linux/coredumpctl
@@ -10,7 +10,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 - List all captured core dumps:
 
-`coredumpctl list`
+`coredumpctl`
 
 - List captured core dumps for a program:
 
@@ -20,6 +20,10 @@ source: https://github.com/tldr-pages/tldr.git
 
 `coredumpctl info {{PID}}`
 
+- Invoke debugger using the last core dump:
+
+`coredumpctl debug`
+
 - Invoke debugger using the last core dump of a program:
 
 `coredumpctl debug {{program}}`
diff --git a/tldr/llvm-mc b/tldr/llvm-mc
new file mode 100644
index 00000000..ec9a76d5
--- /dev/null
+++ b/tldr/llvm-mc
@@ -0,0 +1,30 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# llvm-mc
+
+> LLVM Machine Code Playground. It provides a set of tools for working with LLVM machine code.
+> Part of LLVM.
+> More information: <https://llvm.org/docs/CommandGuide/llvm-mc.html>.
+
+- Assemble assembly code file into object file with machine code:
+
+`llvm-mc --filetype=obj -o {{path/to/output.o}} {{path/to/input.s}}`
+
+- Disassemble object file with machine code into assembly code file:
+
+`llvm-mc --disassemble -o {{path/to/output.s}} {{path/to/input.o}}`
+
+- Compile LLVM bit code file into assembly code:
+
+`llvm-mc -o {{path/to/output.s}} {{path/to/input.bc}}`
+
+- Assemble assembly code from standard input stream and show encoding to standard output stream:
+
+`echo "{{addl %eax, %ebx}}" | llvm-mc -show-encoding -show-inst`
+
+- Disassemble machine code from standard input stream for specified triple:
+
+`echo "{{0xCD 0x21}}" | llvm-mc --disassemble -triple={{target_name}}`
diff --git a/tldr/timew b/tldr/timew
index c300859e..0e27a421 100644
--- a/tldr/timew
+++ b/tldr/timew
@@ -8,22 +8,30 @@ source: https://github.com/tldr-pages/tldr.git
 > A time tracking tool used to measure the duration of activities.
 > More information: <https://timewarrior.net/docs>.
 
-- Start a new stopwatch, giving a tag name to the activity being tracked:
+- Start tracking an activity:
+
+`timew start`
+
+- Tag the current activity:
+
+`timew tag {{activity_tag}}`
+
+- Start tracking and tag a new activity:
 
 `timew start {{activity_tag}}`
 
-- View running stopwatches:
-
-`timew`
-
-- Stop the stopwatch with a given tag name:
-
-`timew stop {{activity_tag}}`
-
-- Stop all running stopwatches:
+- Stop the current activity:
 
 `timew stop`
 
-- View tracked items:
+- Track an activity in the past:
+
+`timew track {{start_time} - {{end_time}} {{activity_tag}}`
+
+- View tracked items of the day:
 
 `timew summary`
+
+- View report for the last day, week, current month, etc.:
+
+`timew summary :{{today|yesterday|week|lastweek|month|lastmonth|year|lastyear}}`