From deb4619a79deace26923e91a93b6d7bbfce40e78 Mon Sep 17 00:00:00 2001
From: Johannes Stoelp <johannes.stoelp@gmail.com>
Date: Sun, 17 Nov 2024 00:01:08 +0100
Subject: xargs: initial notes

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 src/cli/xargs.md | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 src/cli/xargs.md

(limited to 'src/cli/xargs.md')

diff --git a/src/cli/xargs.md b/src/cli/xargs.md
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+# xargs(1)
+
+```
+xargs [opts] [cmd [init-args]]
+    -l [<num>]   maximal number of lines per cmd invocation
+                 if <num> it not provided, num=1 is assumed
+    -I <str>     replace <str> in the [init-args] with the arg;
+                 this implies -l, and hence processes one arg at a time
+```
+
+## Example
+
+Collect arguments and prefix them with another option.
+```sh
+# Using -l to process one arg at a time.
+eval strace -f (find /dev -name 'std*' | xargs -l echo -P | xargs) ls
+
+# Using -I to place the arg at the specified location.
+eval strace -f (find /dev -name 'std*' | xargs -I {} echo -P {}) ls
+
+# Both commands achieve the same thing and result in something like:
+#   eval strace -f -P /dev/stdin -P /dev/stdout -P /dev/stderr ls
+```
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