enforce 80char max line length

misc. cleanup

sheets/ch-build

@@ -1,6 +1,8 @@
 # ch-build
-# Utility to build a Charliecloud image and place it in the builder’s back-end storage. More information: <https://github.com/hpc/charliecloud>.
+# Utility to build a Charliecloud image and place it in the builder’s back-end
+# storage. More information: <https://github.com/hpc/charliecloud>.
 
-# Create an image tagged foo and specified by the file /bar/Dockerfile. Use /bar as the Docker context directory. Use the default builder.
+# Create an image tagged foo and specified by the file /bar/Dockerfile.
+# Use /bar as the Docker context directory. Use the default builder.
 ch-build -t foo --file=/bar/Dockerfile /bar
 

sheets/ch-build2dir

@@ -1,6 +1,8 @@
 # ch-build2dir
-# Utility to build a Charliecloud image from Dockerfile and unpack it into a directory. More information: <https://github.com/hpc/charliecloud>.
+# Utility to build a Charliecloud image from Dockerfile and unpack it into a
+# directory. More information: <https://github.com/hpc/charliecloud>.
 
-# Build a Charliecloud image using ./Dockerfile.foo and create image directory /var/tmp/foo
+# Build a Charliecloud image using ./Dockerfile.foo and create image
+# directory /var/tmp/foo
 ch-build2dir -t foo -f ./Dockerfile.foo . /var/tmp
 

sheets/ch-builder2squash

@@ -1,6 +1,8 @@
 # ch-builder2squash
-# Utility to flatten a builder image into a Charliecloud SquashFS file. More information: <https://github.com/hpc/charliecloud>.
+# Utility to flatten a builder image into a Charliecloud SquashFS file.
+# More information: <https://github.com/hpc/charliecloud>.
 
-# Flattens the builder image tagged "debian" into a SquashFS file named debian.sqfs in /var/tmp.
+# Flattens the builder image tagged "debian" into a SquashFS file named
+# debian.sqfs in /var/tmp.
 ch-builder2squash debian /var/tmp
 

sheets/ch-builder2tar

@@ -1,6 +1,8 @@
 # ch-builder2tar
-# Utility to flatten a builder image into a Charliecloud image tarball. More information: <https://github.com/hpc/charliecloud>.
+# Utility to flatten a builder image into a Charliecloud image tarball.
+# More information: <https://github.com/hpc/charliecloud>.
 
-# Flatten the builder image tagged "hello" into a Charliecloud tarball in directory /var/tmp
+# Flatten the builder image tagged "hello" into a Charliecloud tarball in
+# directory /var/tmp
 ch-builder2tar hello /var/tmp
 

sheets/ch-dir2squash

@@ -1,6 +1,8 @@
 # ch-dir2squash
-# Utility to create a SquashFS file from a Charliecloud image directory. More information: <https://github.com/hpc/charliecloud>.
+# Utility to create a SquashFS file from a Charliecloud image directory.
+# More information: <https://github.com/hpc/charliecloud>.
 
-# Create a Charliecloud SquashFS file debian.sqfs from the image directory /var/tmp/debian under the directory /var/tmp.
+# Create a Charliecloud SquashFS file debian.sqfs under the directory /var/tmp
+# from the image directory /var/tmp/debian.
 ch-dir2squash /var/tmp/debian /var/tmp
 

sheets/ch-grow

@@ -1,7 +1,10 @@
 # ch-grow
-# Utility to build and manage Charliecloud images but not running them. It is completely unprivileged, with no setuid/setgid/setcap helpers. More information: <https://github.com/hpc/charliecloud>.
+# Utility to build and manage Charliecloud images but not running them.
+# It is completely unprivileged, with no setuid/setgid/setcap helpers.
+# More information: <https://github.com/hpc/charliecloud>.
 
-# Build the image "bar" using ./foo/bar/Dockerfile and context directory ./foo/bar
+# Build the image "bar" using ./foo/bar/Dockerfile and context directory
+# ./foo/bar
 ch-grow build -t bar -f ./foo/bar/Dockerfile ./foo/bar
 
 # Download the Debian Buster image and place it in /tmp/buster.

sheets/ch-mount

@@ -1,7 +1,8 @@
 # ch-mount
-# Utility to mount a SquashFS image file using FUSE. More information: <https://github.com/hpc/charliecloud>.
+# Utility to mount a SquashFS image file using FUSE.
+# More information: <https://github.com/hpc/charliecloud>.
 
-
-# Create a new empty directory named debian, then mount it on /var/tmp directory. The /var/tmp directory must not already exist.
+# Create a new empty directory named debian, then mount it on /var/tmp
+# directory. The /var/tmp directory must not already exist.
 ch-mount /var/tmp/debian.sqfs /var/tmp
 

sheets/ch-pull2dir

@@ -1,6 +1,8 @@
 # ch-pull2dir
-# Utility to pull an image from the Docker Hub and unpack it into a directory. More information: <https://github.com/hpc/charliecloud>.
+# Utility to pull an image from the Docker Hub and unpack it into a directory.
+# More information: <https://github.com/hpc/charliecloud>.
 
-# Pull Docker image named alpine:latest from Docker Hub and extract it into a subdirectory of /var/tmp. A temporary tarball will be stored in /var/tmp.
+# Pull Docker image named alpine:latest from Docker Hub and extract it into
+# a subdirectory of /var/tmp. A temporary tarball will be stored in /var/tmp.
 ch-pull2dir alpine:latest /var/tmp
 

sheets/ch-pull2tar

@@ -1,7 +1,8 @@
 # ch-pull2tar
-# Utility to pull an image from the Docker Hub and flatten it into a tarball. More information: <https://github.com/hpc/charliecloud>.
+# Utility to pull an image from the Docker Hub and flatten it into a tarball.
+# More information: <https://github.com/hpc/charliecloud>.
 
-
-# Pull a Docker image named alpine:latest from Docker Hub and flatten it into a Charliecloud tarball in the directory /var/tmp.
+# Pull a Docker image named alpine:latest from Docker Hub and flatten it into
+# a Charliecloud tarball in the directory /var/tmp.
 ch-pull2tar alpine:latest /var/tmp
 

sheets/ch-run

@@ -1,6 +1,8 @@
 # ch-run
-# Utility to run a command in a Charliecloud container. More information: <https://github.com/hpc/charliecloud>.
+# Utility to run a command in a Charliecloud container.
+# More information: <https://github.com/hpc/charliecloud>.
 
-# Run the command echo hello inside a Charliecloud container using the unpacked image at /data/foo.
+# Run the command echo hello inside a Charliecloud container using
+# the unpacked image at /data/foo.
 ch-run /data/foo -- echo hello
 

sheets/ch-tar2dir

@@ -1,6 +1,9 @@
 # ch-tar2dir
-# Utility to unpack a Charliecloud image tarball into a directory. More information: <https://github.com/hpc/charliecloud>.
+# Utility to unpack a Charliecloud image tarball into a directory.
+# More information: <https://github.com/hpc/charliecloud>.
 
-# Extract the tarball /var/tmp/hello.tar.gz into a subdirectory of /var/tmp. hello.tar.gz must contain a Linux filesystem image, e.g. as created by ch-builder2tar.
+# Extract the tarball /var/tmp/hello.tar.gz into a subdirectory of /var/tmp.
+# hello.tar.gz must contain a Linux filesystem image, e.g. as created
+# by ch-builder2tar.
 ch-tar2dir /var/tmp/hello.tar.gz /var/tmp