diff --git a/lld/test/COFF/reloc-discarded.s b/lld/test/COFF/reloc-discarded.s
index 667df0faeb5a8..404f7978f726f 100644
--- a/lld/test/COFF/reloc-discarded.s
+++ b/lld/test/COFF/reloc-discarded.s
@@ -1,5 +1,5 @@
 # REQUIRES: x86
-# RUN: echo -e '.section .bss,"bw",discard,main_global\n.global main_global\n main_global:\n .long 0' | \
+# RUN: printf '.section .bss,"bw",discard,main_global\n.global main_global\n main_global:\n .long 0' | \
 # RUN:     llvm-mc - -filetype=obj -o %t1.obj -triple x86_64-windows-msvc
 # RUN: llvm-mc %s -filetype=obj -o %t2.obj -triple x86_64-windows-msvc
 
diff --git a/lld/test/ELF/msp430.s b/lld/test/ELF/msp430.s
index 39079ed596977..732af387d2619 100644
--- a/lld/test/ELF/msp430.s
+++ b/lld/test/ELF/msp430.s
@@ -1,6 +1,6 @@
 ; REQUIRES: msp430
 ; RUN: llvm-mc -filetype=obj -triple=msp430-elf -o %t1.o %s
-; RUN: echo -e '.global _start\n _start: nop' | llvm-mc -filetype=obj -triple=msp430-elf -o %t2.o -
+; RUN: printf '.global _start\n _start: nop' | llvm-mc -filetype=obj -triple=msp430-elf -o %t2.o -
 ; RUN: ld.lld -o %t.exe --image-base=0x1000 --Tdata=0x2000 --Ttext=0x8000 --defsym=_byte=0x21 -z separate-code %t2.o %t1.o
 ; RUN: llvm-objdump -s -d %t.exe | FileCheck %s
 
diff --git a/lld/test/ELF/weak-shared-gc.s b/lld/test/ELF/weak-shared-gc.s
index 833d7b7ab4095..2bba6341d750e 100644
--- a/lld/test/ELF/weak-shared-gc.s
+++ b/lld/test/ELF/weak-shared-gc.s
@@ -1,6 +1,6 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
-# RUN: echo -e '.globl __cxa_finalize\n__cxa_finalize:' | \
+# RUN: printf '.globl __cxa_finalize\n__cxa_finalize:' | \
 # RUN:   llvm-mc -filetype=obj -triple=x86_64-pc-linux - -o %t2.o
 # RUN: ld.lld %t2.o -o %t2.so -shared
 # RUN: ld.lld %t1.o --as-needed --gc-sections %t2.so -o %t
diff --git a/lld/test/ELF/weak-undef-lib.s b/lld/test/ELF/weak-undef-lib.s
index 0ff1bc755f075..8f89c6f421ad0 100644
--- a/lld/test/ELF/weak-undef-lib.s
+++ b/lld/test/ELF/weak-undef-lib.s
@@ -1,6 +1,6 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
-# RUN: echo -e '.globl foo\nfoo: ret' | \
+# RUN: printf '.globl foo\nfoo: ret' | \
 # RUN:   llvm-mc -filetype=obj -triple=x86_64-pc-linux - -o %t2.o
 
 # RUN: ld.lld -shared -o %t.so %t1.o --start-lib %t2.o