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--- unix_shell [2022/02/21 14:03] – 134.190.232.106
+++ unix_shell [2022/06/23 10:21] (current) – 134.190.232.106
@@ Line 1: / Line 1: @@
-//The commonly used scripts collected from previous Github page and course materials.//
+The commonly used scripts collected from previous Github page and course materials.
-Here's a list of commands to retrieve deleted text in vi:
+.How to set up timer for specific script run?
+<code>
+#!/bin/bash
+# Twosday.sh
+while true;
+do
+    DATE=`date | cut -d' ' -f4`
+    #echo $DATE
+    if [[ $DATE == "22:22:22" ]]
+    then
+            echo "this is a test program" >> xyz.log
+            qrsh
+            sleep 1s
+    fi
+done
+</code>
+<code>
+#stopwatch
+#https://superuser.com/questions/611538/is-there-a-way-to-display-a-countdown-or-stopwatch-timer-in-a-terminal
+while true; do echo -ne "`date`\r"; done
+#nanoseconds:
+while true; do echo -ne "`date +%H:%M:%S:%N`\r"; done
+</code>
+.Here's a list of commands to retrieve deleted text in vi:
 <code>
@@ Line 76: / Line 104: @@
 <code>
->cd /scratch2/xizhang/
+https://github.com/brentp/pyfasta
-/home/xizhang/.local/bin/pyfasta split -n 6 original.fasta
+# To install python2 version
+pip install pyfasta
+# To install python3 version
+pip3 install pyfasta
+#split a fasta file into 6 new files of relatively even size:
+pyfasta split -n 6 original.fasta
 </code>
@@ Line 107: / Line 141: @@
 </code>
-<Last updated by Xi Zhang on Oct 6th,2021>
+How to use sort in linux, especially ignore the header to sort special col?
+<code>
+(head -n 1 all.txt && tail -n +2 all.txt| sort -n -r -k2) > 123.txt
+# sort -n
+#sort -r
+#sort -k
+https://shapeshed.com/unix-sort/; https://stackoverflow.com/questions/14562423/is-there-a-way-to-ignore-header-lines-in-a-unix-sort
+</code>
+<Last updated by Xi Zhang on Oct 6th,2021> <June 23th,2022>